Caught Peter Levels' tweet the week Skype shut down, shipped a replacement over a weekend, now at $14K/mo
Fewer bars = easier, cheaper, or faster for an AI-assisted solo builder. Editorial judgments based on the case details.
Dennis is a solo developer with a background in diplomacy who taught himself to code in two months. In March 2025 Microsoft announced it was shutting down Skype; he saw Peter Levels tweet a call for someone to build a replacement, thought "why not me," and banged out the Yaphone prototype over a weekend. The product lets people make cheap international calls over VoIP straight from the browser (a few cents a minute), billed pay-as-you-go instead of by subscription, aimed at travelers, expats and businesses that make a lot of calls.
2 more sections — the full story, the playbook, the risks, and the numbers. Free account unlocks everything.
Create free accountEmail code only. No password.The quick-reference card — acquisition channels, replication playbook, and risk map — unlocks with a free account.
Create free accountEmail code only. No password.Paste into Claude Code / Codex and get a working version of this product end-to-end.
Two production-grade prompts per idea: a full build spec and an SEO growth plan. Copy, paste, ship.
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Create free accountEmail code only. No password.Data credibility: Founder Dennis says in a Starter Story interview that he reached roughly $13.3-14K/mo in 7 months with 10,000 sign-ups, 4,500 paying users and 20 business customers; not third-party verified ⚠️ All revenue figures are founder-reported or estimated by the video creator — unaudited.