Feynman AI is an AI-powered note-taking and study app that applies the Feynman technique to generate notes, mind maps, quizzes, and flashcards from audio, PDFs, and more, supports 100+ languages, and is available on the web and mobile.
MRR (USD)
TRAILING 30D REVENUE
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LIFETIME REVENUE
TARGET CUSTOMER
Primarily students and self-learners (e.g., recording lectures) plus anyone needing transcription and AI summaries for meetings and interviews.
TIMELINE
- 300K users and $20.5K/month snapshot — → September 1, 2025
Product publicly framed as a 300K-user, solo-built app with a $20.5K/month run rate.
- August 2025 revenue breakdown — → August 31, 2025
August 2025 revenue attribution shows Feynman AI contributed $20.5K.
TECH STACK
TypeScript end-to-end; Next.js + TailwindCSS + Shadcn UI + React Query on web; React Native (Expo) for mobile; Supabase (DB/Auth); HonoJS backend on Railway; OpenAI + Anthropic + Deepinfra for AI; RevenueCat (mobile payments) and Lemon Squeezy (web); Firebase for push.
LATEST USERS
USERS CHANGE
FINANCIALS
- revenue — $20,500 USD · as of August 31, 2025 Feynman AI — $20.5K
TRACTION
- users — 300000 count · as of September 1, 2025 300K-User Product
FOUNDERS
Solo indie builder of a 300K-user product generating ~$20.5K/month; ships B2C apps and actively markets via short-form video.
PRODUCT–FOUNDER FIT
Alex Nguyen built and runs Feynman AI solo, leveraging a 100% TypeScript stack and organic TikTok distribution to reach a broad, multilingual audience. He localizes apps to reduce dependence on any single country and focuses on direct B2C monetization without VC funding.