Side Income

Digital products and side projects for people who can already build. Sorted by return on the hours, not by how good the pitch sounds.

2026-07-28
AI Side Hustle: What Actually Gets Paid

The AI side hustle most likely to earn real money is a narrow software product tied to a recurring, expensive problem, not generic AI content. In the full…

2026-07-28
App Ideas That Make Money: Revenue Evidence, Not Brainstorms

The app ideas that make money are narrow tools with an obvious buyer, a recurring pain, and a distribution path you can test before polishing the product.…

2026-07-28
App Ideas With Revenue Evidence, Not Brainstorming

The best app ideas are narrow tools for an existing, expensive problem, not clever concepts waiting for a market. ProvenStartups found 131 relevant…

2026-07-28
Digital Products: Real Revenue Data From 131 Projects

Digital products are software, apps, tools, publications, or content delivered electronically, with near-zero cost for each additional copy. For a…

2026-07-28
How to Create Digital Products by Working Backward From Proven Cases

To create digital products, choose a narrow recurring job, verify that someone already pays for it, ship the smallest paid loop, and measure retention…

2026-07-28
How to Make Side Income as a Developer

The best answer to how to make side income is to ship one narrow paid tool that removes a recurring annoyance, then add distribution before adding…

2026-07-28
How to Sell Digital Products Online

To sell digital products online, pick one painful job, prove you can reach its buyer, then ship the smallest paid download, tool, or app that completes…

2026-07-28
Most Profitable Digital Products, Ranked by Real Margin Evidence

The most profitable digital products in ProvenStartups’ data are high-retention consumer apps and narrow utilities with recurring demand, not template…