206 of 406 ideas

Use Claude Code plus a Skill file to turn long-form videos and podcasts into SEO blog posts pushed straight into WordPress, or spin up a site in a few hours for an unglamorous local business (septic tanks, junk hauling, funeral homes) that ranks on page one of Google and gets cited in AI Overviews — billed as a several-thousand-dollar monthly retainer, with a $99 digital product on the side for passive income.

A solo-built real-time bus/train tracker covering 160+ cities, downloaded 5.2M times, grown to $30K/mo in subscriptions on free App Store keyword optimization (ASO) alone.

An AI scriptwriting SaaS for YouTube creators built on selling before building — $20K pre-sold before the product existed, then 4,000+ customers, ~$30K/mo, and $700K in annual sales inside 18 months.

A non-technical Amazon seller built an AI product-research tool in 48 hours with Cursor, then borrowed someone else's distribution — a rev-share deal with a coaching company sitting on thousands of students — and hit ~$21.8K/mo in 90 days.

Stephen has shipped hit app after hit app, and he's publishing his four-step idea-validation framework. Posted is doing $90K/mo right now; his last one, PuffCount, hit $44K/mo before he sold it. The core of the method: marketing is 90% of the outcome.

Automatically cuts long videos, articles, and podcasts into multiple viral social shorts — and has since evolved into a multi-agent “AI director” that produces an entire video end to end.

Train a company a conversational AI agent wired into all of its content and systems (CRM / Stripe / APIs), then let it carry support, sales, onboarding, and lead capture across every customer touchpoint.

Generate coloring-book covers, interiors, and A+ content with AI, pick the niche with precision, publish to Amazon KDP — two books cleared $10,155 in a year.

Four e-commerce automation agents built in n8n: AI product photography, ripping competitors' proven ads, unlimited influencer ad generation, and automated Twitter lead gen — together adding or saving over $10K a month.

Use VEO3/Higgsfield + Claude to build talking AI avatars, clone proven TikTok sales scripts, and shoot "regular-person reviews" for any demographic without ever going on camera — attach a TikTok Shop link and collect commission. One week cleared $2.2K in profit.

AI sitemap and wireframe tools crush web design delivery from 3-4 weeks down to 1 hour — and the client still pays $10K a site

Built a faceless YouTube channel from zero (classic cars / pickup trucks / Jay Leno topics), cleared $60K+ in ad revenue in 8 months, and sold it for roughly $1M

White-label a SaaS or app for mid-tier influencers who already monetize, then run a subscription business on their existing traffic.

An indie-hacker launch platform shipped exactly when Product Hunt had everyone furious — the first product to work after 30+ failures.

A SaaS that pulls high-intent LinkedIn leads and automates the outreach — 11M impressions from telling stories on Reddit, $30K MRR in 6 months.

George can't code, so he used the no-code platform Rork to build an AI wrestling coach: upload your match video, the AI tells you what you did right and wrong, then hands you targeted drills. $10/mo, $38K actually collected in a single month (~$20K MRR). The core play: take “AI combat coach” and cut it down to the ultra-vertical wrestling niche, then snowball acquisition through a matrix of wrestling influencers.

Like Cursor, but for designing mobile apps — cold-started entirely on Reddit with zero budget

Open-source self-hosting as the top of the funnel, the cloud-hosted version as the paid tier — 21K GitHub stars carrying $9K MRR

Caught Peter Levels' tweet the week Skype shut down, shipped a replacement over a weekend, now at $14K/mo

One-click AI store building plus high-converting themes and upsells — one of the fastest apps on Shopify to break $1M ARR

A student vibe-coded a SaaS that helps creators find and clone viral video formats — 0 to 10K users off Discord alone

21-year-old Roy Lee's “sees what you see, hears what you hear” invisible AI assistant — undetectable on a screen share, feeding you answers before you even ask. Launched April 20, hit $500K/mo and roughly $6M ARR in under two months, almost entirely off an in-house army of 60 creators pumping short-form video.

Roy Lee's product before Cluely: screenshot the question, AI solves it instantly, invisible on a screen share. He blew it up with a controversy script — filming himself cheating his way to an Amazon offer, getting expelled from Columbia, and live-tweeting every step — which converted straight into a $5M round on 200-300M views.

A self-improvement app that helps guys quit porn by replacing the bad habit instead of white-knuckling it

A browser extension that turns any foreign-language YouTube video into native-language subtitles with one click, right inside the player

A no-name burner account used AI to build jaw-dropping 3D creative websites — and the work itself pulled in the clients and the job offer

Clone a product already validated by tens of millions, keep only the core feature, price it low, and go straight for the users the original's bloat has annoyed

Get the waitlist page, analytics, feedback board, email sequence, store listing, and landing page all in place before launch, and soak up every drop of Apple's new-app traffic boost

A micro SaaS that auto-generates city-specific renovation permit application packages for homeowners

A micro SaaS that turns dropped-in B2B spec sheet PDFs into an automatic comparison table

Take over founders' and CEOs' email and scheduling with AI, and charge a monthly retainer

Teach company teams how to use Claude, billed by the day or by the project

Use AI to design funny apparel for specific dog breeds and sell it on Etsy via print on demand

Use AI to one-click generate obscure must-have PDFs (like a vintage leather bag restoration guide) and sell them through Reels DMs

Using the Rook (Roocast) agent to one-tap generate long-form AI-avatar finance videos from a phone, stitching two viral topics together — $47K in a little over two months, peaking at $6,000+ in a single day

A 9-to-5er uses AI to semi-automate product selection and image production, floods listings onto Russia's Ozon marketplace, and drives orders with off-platform index ads — a two-layer traffic model.

AI voiceover over book excerpts plus comforting illustrations — a “life is quiet and good” reading account that sells philosophy and healing paperbacks through the storefront, order by steady order.

Use AI to mass-produce “a letter from an old friend” style emotional shorts, run an overlooked high-CPM WeChat Official Account, and quietly bank footer and comment-section ad revenue.

A free AI generator that builds a Shopify dropshipping store in one click, dropping the barrier to “launching a store” to zero.

One tracking link tells creators exactly which short video and which platform drove traffic to their long-form video

Auto-generates faceless short videos (script/voiceover/visuals/captions/editing all included), sold to people making money off the TikTok Creator Fund

Take the agency work of "building scorecard assessments for clients" and productize it into self-serve SaaS

An all-in-one creator brand page: AI-generated photos and videos of you, and fans pay to generate AI-avatar content of you while you take a cut

Mass-produce kids' seek-and-find and step-by-step drawing books with Nano Banana, then sell them passively through KDP print-on-demand

A 2020 pixel-shooter mobile game that earned $119K over five years by porting to every platform

Use ChatGPT deep research to dig out high-intent buyers who are actively shopping, then build the finished thing in Lovable as your foot in the door before you ever talk price

Clone a URL shortener with zero code using Replit and collect pure passive ad revenue from Google AdSense

One command fires 5 parallel subagents and produces a client-grade marketing audit PDF for any website — your crowbar for prying open high-ticket clients

A browser tool that lets IT admins deploy apps to Microsoft Intune in one click — so boring nobody copies it, yet it makes $60K/mo

One prompt generates an AI short video and uploads it straight to the user's own YouTube channel

A browser extension that adds folders and subfolders to ChatGPT

A central command deck for a fleet of AI agents: visualize them collaborating and getting work done across your company

Uses Claude to turn HTML files into interactive digital products, then closes sales on autopilot with an IG comment hook + ManyChat + Omnisend.

Pick a topic, drop in 5 viral TikTok clips from elsewhere, and stitch a “ranking” Short in one click — one video every 10 minutes.

Pipe a company's messy data in and automatically tell them what to fix next — start done-for-you, productize later.

A remote-controlled countdown timer for speakers and show callers

An HTML-to-PDF API for developers, billed per request

AI agents mine real demand signals and drop one data-backed startup idea in your inbox every day

Photograph a stamp, get an AI valuation plus its history — an ultra-narrow identifier app that siphons traffic straight from App Store search

A two-host slow-English conversation podcast, a faceless YouTube channel teaching ESL learners, fully AI-generated at roughly $1.59 an episode

Generate a beautiful, responsive landing page for your app from one sentence, then publish it and get a link

One click to find high-RPM niches, one click to grab a competitor's script — built for faceless YouTube creators

Feed it several competitor videos as context, run them through best practices, and get an original, policy-safe YouTube script

Semantically search your Instagram/X followers and get alerted to who's worth knowing — dates, peers, and door-openers

Turn Bible GPT from a Q&A tool into emotional companionship that asks you questions back, aimed at the audience technology reaches last

A wrapper around an AI music generator that grows itself on one mechanic: share the song, not the app

Upload a screenshot of your chat with someone and AI tags their personality traits and red flags — built-in talkability and built-in urge to share

Turn an audience that buys one-off PDFs into one that pays every month: clone a top subscription app's core features with Base44, bolt on a landing page + paywall + Stripe, and start selling.

Six years, 2M+ downloads and $1M+ in App Store revenue — from a developer whose 2026 strategy shifted from shipping many small apps to protecting one Apple account

Write the funding applications that nonprofits fumble every year, with Claude doing the structural work and you doing the compliance

Walk into one industry's local firms, automate their single most repetitive task with Claude, charge for the install and then bill a maintenance retainer forever — the reference case went from zero generative-AI knowledge to a reported $18M in agency revenue in about three years.

Ramble into your phone, and AI turns the mess into a clean note — a no-code tool built in a 12-hour hackathon that now makes $15K/month

A faceless compilation channel aimed at 3-5 year olds that stacks two proven viral concepts per video — one video alone paid $20,546

One faceless compilation channel, 500 million long-form views, $2.3 million in lifetime AdSense — built entirely by copying a competitor's video and making it 10% better.

A first-time solo dev's brick-breaker with a Diablo-style loot twist cleared roughly £11K in its first 30 days — almost entirely from one Reddit post and organic installs.

A vibe-coding platform built entirely on daily live streams — the founder codes the product on camera every day and the audience becomes the customer base

A four-times-a-week paid tech briefing for people who don't want to live on Twitter — 350 subscribers paying $9/month, run by one writer with about $180 of monthly costs

A solo dev built a digital wardrobe app for his wife; it made $8,354 in 2025 while his two other apps made $472 combined — the honest arithmetic of shipping small apps.

One button that strips filler words, background noise, long silences and mouth clicks out of a podcast — $20K/month from a feature nobody wanted to build a company around

They didn't build a Shopify app — they bought a neglected, one-star-drifting one for ~2x revenue and ran it for a decade into a business worth millions.

A Japanese freelancer scratched his own invoicing itch in PHP, gave it away free until 10,000 people used it, then switched on ¥980–¥3,000 plans and collected ¥100K–¥120K a month for years before selling the whole thing

Under 5,000 downloads produced $65,000 — because the app wasn't a workout app, it was one specific influencer's workout app, sold to the audience that already pays her.

A 19-year-old who can't code buys sports creators at a $2-5 CPM and turns them into subscription apps — two new apps hit roughly $23K and $15K in their first 45 days on $400/day of promo spend.

An AI resume builder and bullet-by-bullet review tool, copied from an existing revenue-proven app, built solo in 23 days and left on autopilot

15,000 subscribers, about $86,000 in five months — because he sells his own course and community rather than renting the list to advertisers

A paid translation app competing head-on with free Google Translate — and clearing $50K a month by being better at the parts Google stopped caring about.

Paste your product URL and it publishes an article a day, repurposes it across social, and seeds natural Reddit mentions so ChatGPT and Gemini start recommending your brand.

Record the job you already do 40 hours a week. A mechanic did it for years and reportedly makes $24K/month from AdSense alone; a 30-year tradesman had a $214 day 29 days after his first video.

Never guess a niche twice: take an ebook that is already selling, produce the audio version for a few hundred dollars, and stack a second royalty line onto a title you have already validated.

The honest version of the Etsy digital products story: $11,945 of revenue and $4,282 of actual profit in year one, for 15-20 hours a month — which in the Philippines is more than the minimum wage

Three deliberately boring directories in niches Google Maps handles badly, monetised with display ads: 80,000-100,000 monthly visitors and $2,300-$3,000 a month for three years, untouched for the last six months.

Stop picking a niche and start pricing one: find channels under a month old that are already pulling six-figure view counts, work out the cost per video, and only enter niches where a full 15-day test costs a few hundred dollars instead of a few thousand.

Write in Notion, publish an SEO-optimised blog — a fourth-attempt product that hit $500 MRR two months after switching on payments, built by a 24-year-old in India who first survived a $10,000 hosting bill

A yoga sequencing app for teachers that collected $117K on its first day by selling lifetime deals before the product was finished.

A public grid of 1,000 squares worth $1,000 each, filled in as he earns — which turned a personal goal into a distribution engine other people copy

Free website, $199/month forever: an agency owner turned one-off web projects into 64 recurring subscribers and $10K MRR in 3.5 months — entirely on Meta ads, zero cold calls

Find a topic people read about constantly and nobody makes videos about — gas prices, factory shutdowns, crop failures — and turn the news cycle into an AdSense channel with a four-step Claude prompt.

A YouTube channel about corporate compliance paperwork — arguably the most boring topic on the platform — hit $80,000 in a single month before it had 60,000 subscribers

Analytics and client reporting built for email/SMS marketing agencies instead of the brands they serve — one sale onboards 30 brands at once

He bought a dying five-year-old SEO tool for $30,000 doing $1,500/month, spent two months fixing retention instead of marketing, and took it to $30,000/month with two contractors and no employees

A day counter with motivational reminders reportedly pulled $200K in a single month — and the whole feature set gets rebuilt on camera from a phone, no code written

An AI automation agency stuck on manual DMs bolted on paid ads, an AI voice agent that calls every lead within 5 minutes, and trained closers — $89K in 75 days

He stole a marketing channel from e-commerce three years before other software founders noticed — roughly 200 creators publishing UGC every day, and $10M a year in edtech

He built an add-on for a Microsoft product with only 12,000 customers worldwide — a market too small for anyone big to bother with — and bootstrapped it past $10M a year

She quit her job, picked one unglamorous system nobody wants to touch — ERP and inventory management — and cold-DMed Canadian companies about automating it. Two deals in one month: $23,000 and $28,000, with no testimonials and no portfolio.

A 17-year-old sells AI book-creation software to Amazon self-publishers — $29K in one month from the exact niche he used to compete in

They sold the SaaS before they built it — a website that looked automated and a team fulfilling lead lists by hand within 24 hours — then used the cash and the customer feedback to ship the real product and hit $1M ARR in 87 days

A Calendly competitor priced per meeting booked instead of per seat, free to embed for anyone building software, designed to run on a few hundred dollars a month forever

A daily motivational channel pulling $38K/month in pure AdSense — and a full n8n workflow that produces and uploads the same kind of long-form video every hour with nobody touching it

She built over 100 digital products, funnels and lead magnets, drowned in it, then hit $33,108 a month by running exactly one channel, one freebie and one checkout page

A working nurse pointed a camera at the thing she explains to patients every day — 24,000 subscribers and roughly $8,700 a month, from zero, in under two months.

Two tiny iOS apps that plug the gaps in someone else's software — open-sourced on GitHub and still selling on the App Store, doing $433 in thirty days from two Reddit posts and one YouTube video.

A 9-to-5 employee pointed an open-source agent at his own apps and told it to do the marketing: it researched competitors, generated slideshows, posted them, read the analytics and doubled down on winners — 8 million views on TikTok, run off an old PC under his desk.

$500-3,000 of equipment — inflatable screen, projector, speaker — that pays for itself in one to six rentals, in a category where one operator does $3-4M a year

A non-developer built a SaaS in Bubble, took it to $10-11K MRR in his first year, tried to sell it to private equity for $112K — and concluded that the acquisition failed partly because his growth came from twelve burner TikTok accounts instead of an ad account.

A subscription symptom-tracking app for a 7-year health transition that most women go into unprepared, in a category where the incumbent reportedly clears $10M a month

$50,000 in a year from Pinterest traffic into digital products and affiliate links, with no daily posting and no camera — then the system itself became the product.

Model a proven Etsy digital download, regenerate it as your own design with AI, host it on Gumroad instead of Etsy, and buy traffic on the one ad platform nobody in the make-money space uses — Pinterest, at five dollars a day.

Unlimited graphic design as a monthly subscription — sold to nobody except churches, at $61K a month.

Two self-published personal-finance books, $75 total spent on ads, ~$97,000 in royalties in a single year — years after they were written.

A sub-niche of the accounting category where several apps do one thing — photograph a receipt — and the App Store estimates put three of them at $60K, $60K and $80K a month.

Don't invent a product, find one the market is already paying for and build your version of it with AI — $500K in year one from a single digital product, and over $32M in sales since

An API that turns any URL into a screenshot — one boring feature, 280 paying companies, about $12K a month

Validate a topic by other people's sales rank, write a 10,000-word book that solves one problem, list it where buyers already are — $2.2M in royalties and a first account sold for $820,000.

A testimonial-collection tool that reached $1M ARR with no viral launch, after Reddit, the indie-hacker community, Slack and partnerships all failed and SEO plus affiliates quietly worked

Two non-technical brothers built a smaller Lovable that also ships mobile apps, Chrome extensions and bots — 690 paying users, zero free users, $25.6K MRR

Every Shopify store you build or migrate can pay you 20% of that merchant's subscription for as long as the store exists — and since July 2025 that includes 20% of a Plus merchant's entire platform fee

$10,000 MRR in six weeks with zero marketing spend — because the team recycled design tools they had already built and knew exactly who they were selling to before they wrote the first prompt.

Fifteen years of boring healthcare directories monetised by one sponsored hotline number — about $350K a year after tax, split three ways, with no employees

Every UGC creator ghosted him, so he generated the creator instead — an AI ads platform for e-commerce brands at $10K MRR seven months after launch.

A Chrome extension clones your app's front end into a clickable demo you can embed anywhere — $250K MRR in two and a half years by ranking for every competitor's name.

Five products that made exactly $0, then one post about the failures got 150K views — now a $29/mo tool doing $13K MRR, with 95% of traffic from the founder's own X account.

A former personal trainer built a calorie tracker you talk to, posted two TikToks a day for a few weeks, and hit $1,000 MRR with no ads, no ASO, and no launch.

A form builder that gives away 99% of its features with no limits, then converts about 3% of 140,000 users at $29/month — $70K MRR on a team of four, built by out-positioning Google Forms and Typeform instead of out-spending them

Kajabi, rebuilt for one country's language and one country's laws — $68K a month from the market the incumbents can't be bothered to comply with.

Buy panels, drop them at a construction site, collect rent for eight months while doing nothing — $20-30K per job, sold for $600K after 18 months

He paid an agency $1,000 and waited six weeks for a spreadsheet, then built the same thing with AI in a week — it grossed $120K, then he stopped touching it and the exit price collapsed.

A single-platform social tool that hit $1K MRR in two weeks and $300K/month by giving a quarter of its profits to one creator as head of distribution

A solo engineer turned a hand-curated network of invite-only UGC creators into a self-serve subscription for brands — $598 MRR one day, close to $1,000 the next

A B2B AI consultant tracked 1,000+ vibe-coded apps over 13 months: 97% dead, abandoned, breached, or stuck under $500/month — and all of them failed for the same three reasons, while HVAC routing quietly bills $1,400 a month per shop.

He found a channel doing 3-4M views a month, niched down from 'vintage everything' to 'vintage vehicles', hired the competitor's own thumbnail designer, and did $60K+ in AdSense in under a year.

A $100/month waitlist-and-reservations app for restaurants that undercuts OpenTable and Yelp by refusing to charge cover fees

A non-developer prompted ChatGPT chunk by chunk into a cross-platform meeting transcriber and reportedly took it to around $7 million in revenue, entirely solo, on rented infrastructure.

A local-only desktop app that turns a Korean school counsellor's three hours of monthly paperwork into ten minutes — ₩20M a month from under 100 schools, built solo with Replit and Claude Code

A faceless YouTube channel hosted by an AI-generated animated character sells a $60/month community to 250 members — roughly $15K/month from the community plus $3K from AdSense.

A corporate data analyst built the tool his employer refused to build, sold it back to his employer as customer number one, and exited at nearly 10× revenue five years later

A survey tool with no ads, no trackers and no cookies, sold to companies that legally cannot leak respondent data — $115K/month recurring from a three-day hackathon build

Construction management software for residential builders — $2M ARR and $40K a month of profit, with 95% of revenue traced back to long-tail blog posts

A broke 23-year-old spotted a Facebook post about weighted blankets nobody was selling yet, pre-sold a product he did not own, did $10M in year one — and switched the brand off five years later

A Canadian B2B lead-gen agency that grows ~40% a year on one monthly video email to 5,000 people — and keeps the average client for five years and nine months

A contractor turned three clients' repeated requests into a SaaS product, grew it to $883K of exit value on blog posts alone, and never made a single outbound sales call

Generate TikTok slideshows and AI videos, push them to every platform — $13-14K a month nine months after launch, with 75% of signups coming from two founders posting on X and no ads

Three founders in Utah built a recurring-revenue service that legally delists the knock-off and grey-market sellers eating a brand's marketplace listings — just under $10M ARR, growing well over 40% a year, profitable, and now turning away inbound private equity

"Lovable for marketing" — one AI panel that runs SEO, social and ads for Turkish small businesses, sold with white-glove hand-holding nobody else will do

Two pages, one input box, zero social media: an exact-match domain that rewrites AI text into human-sounding text and gets 2.6 million Google visitors a month on the back of 1,700 referring domains

She turned KSh 200 into KSh 1.5M in eighteen months by buying thrifted dresses at KSh 50 and selling them on Facebook at KSh 1,000 — then used the whole pile as launch capital for her own made-in-Kenya label, and lost every shilling of it on the first production run

A personality-quiz aggregator built by someone who had never made a website — under ₩3 billion in cumulative revenue from ad units on JSON files served as static pages

Software for nurseries and preschools started by a 19-year-old in his mother's daycare — over 20 million złoty in revenue, half a million parents, and one in three Polish parents with a child in private childcare

Two words — one activity, one place — and a page that lists every one of them. A hot-springs directory for a single US state does around 25,000 visitors and roughly $1,000/month; a crime-map directory does 1.3 million visitors; a pickleball court finder raised $2.5M.

Two lazy engineers automated the part of GitHub that GitHub wouldn't build, gave it free to open source, and now bill 150 engineering teams ~$750/month each — $110K/month, bootstrapped

A second-time French founder walked into 20 factories, got 19 nos, and turned the one yes into eight separate software companies doing €2.2M a year across 180 factory sites — sold almost entirely through 100 tiny consultancies on commission

An AI photo studio built on the premise that you can have photography without a camera — and a single influencer post that tripled monthly revenue and never gave the gain back

Upload a podcast episode, get the show notes, newsletter and social posts back — a two-week build that reached $16K MRR after four earlier products went nowhere

A directory that helps people find addiction and mental-health treatment, monetised the way Google is — facilities pay to be on the first page — went from $300K of annual recurring revenue in 2017 to over $30M, financed almost entirely with revenue-based debt instead of equity

€7,500 of ads bought 43 leads, 12 demos and 6 clients in four months — roughly €60K of revenue at a 50% close rate — run by one founder and two part-time employees who each orchestrate five to ten AI agents.

A mother of three with a full-time job and no technical background learned AI in a couple of months, signed one client at $5,500 a month doing blog and SEO automations, and grew a YouTube channel from 500 subscribers to 500-600 new subscribers a day.

Buy a 25-year-old on-prem software business with a few hundred stuck customers, then use an AI phone answerer as the cheap wedge that gets you into shops that will never switch systems

A code review tool bolted onto version control systems, sold to enterprises with no salespeople — millions in revenue at roughly $1M per employee, and a founder who still woke at 3am panicking about payroll because none of it was recurring

Interview founders, publish the numbers, and sell access to the archive — about $1M a year off 4,000+ case studies, and the reason a rival concluded the moat is simply five years of interviews nobody else wants to do

Everyone else sold marketing automation; this founder sold only the step marketers actually hate — building the HTML email — and 1,500 free templates plus a content-marketing engine took it to $3.7M ARR

A Japanese restaurant reservation platform that wins deals by telling restaurants their current vendor is holding their customer data hostage — and lets anyone export everything, any time, with no contract lock

61 million organic views in under five months from an AI clone of his own face — but the money comes from the course and the corporate training the views feed, not from the platform payouts

A credit-based AI video generator sold to content creators — $100,000 in its first year at 60% margin, with zero ad spend, distributed by shipping its own API inside free n8n automation templates

Take a tool that agencies sell for ¥100K a month, sell it to sole traders for ¥5K, then pay your three free beta users ¥5,000 a head to sell it for you — the exact sequence that took a Japanese solo dev to ¥200K/month

He bought a neglected WordPress classifieds plugin off Flippa for $1,000, added a shopping cart, a support forum and higher prices — and grew it from $300 a month to $2,000, then repeated the trick for $1,400

Before it had a name, a slide deck, an employee or a server, 30-40 people had already agreed to pay $50/month for it — and annual prepay later gave it 3x monthly cash flow and what the founder calls an infinite marketing budget