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Every resource founders actually use, in one library.

The essays, videos, podcasts, books and tools behind every answer across eChai's hubs, from starting up to go-to-market, D2C, founder money and AI, each with a note on why it is here.

What founders use most, ranked by how many answers lean on it.

  1. Real human panels with AI synthesis, highlight reels, and fraud detection on top. usertesting.com Tool · How Founders Use AI UserTesting AI: AI-powered UX platform UserTesting
  2. Mobile-specific prototype testing tactics, useful for app founders. usertesting.com Article · How Founders Use AI How to get rapid user feedback on your mobile app prototype UserTesting
  3. The leading tool for AI-simulated interviews; try it knowing its limits. syntheticusers.com Tool · How Founders Use AI Synthetic Users Synthetic Users
  4. Peer-reviewed-grade caution on what simulated users systematically miss. interactions.acm.org Article · How Founders Use AI The challenges of synthetic users in UX research ACM Interactions
  5. Quantitative comparisons of synthetic versus human responses across studies. measuringu.com Article · How Founders Use AI A review of experiments with synthetic users MeasuringU (Jeff Sauro)
  6. A balanced practitioner summary if you only read one pros-and-cons piece. medium.com Article · How Founders Use AI AI synthetic users for UX testing: pros and cons guide Hashbyt
  7. Head-to-head of the three main AI research platforms, including message testing. genesysgrowth.com Article · How Founders Use AI UserTesting AI vs Maze AI vs Wynter: a complete guide Genesys Growth
  8. A current tool landscape so you pick by need, not brand recall. uxarmy.com Article · How Founders Use AI Top AI tools for usability testing UXArmy
  9. A researcher's hands-on trial of synthetic interviews with honest results. carolinaguimaraeslima.medium.com Article · How Founders Use AI Synthetic users: the next revolution in UX research? Carolina Guimarães
  10. A free field guide for running interviews that produce decisions, not just notes. userinterviews.com Guide · How Founders Use AI User interviews for UX research: what, why and how User Interviews
  11. Prompt to real React Native app, submittable to the App Store and Google Play. rork.com Tool · How Founders Use AI Rork: create mobile apps using AI in minutes Rork
  12. Context on the fastest-growing mobile AI builder and where it is headed. prnewswire.com Article · How Founders Use AI Rork raises $15M to power the next generation of App Store entrepreneurs Rork (PR Newswire)
  13. The top vibe-coding channel on YouTube, heavy on mobile app builds. youtube.com Video · How Founders Use AI Riley Brown's vibe coding playlist Riley Brown
  14. Weekly practical lessons from the founder of a mobile vibe-coding company. newsletter.vibecodeapp.com Guide · How Founders Use AI Learn to Vibe Code newsletter Riley Brown (VibeCode)
  15. Video · How Founders Use AI How to actually build mobile apps with AI: a complete beginner's tutorial YouTube educator
  16. Video · How Founders Use AI Lovable AI: how to build an app and upload to the App Store YouTube educator
  17. Google's account of the redesigned Stitch: an infinite canvas, screens linked into a playable flow, and DESIGN.md for design... blog.google Article · How Founders Use AI Introducing “vibe design” with Stitch Google (Rustin Banks, Google Labs)
  18. Free, Gemini-powered mobile and web UI generation with code export. stitch.withgoogle.com Tool · How Founders Use AI Stitch: design with AI Google Labs
  19. A critical review so you know Stitch's ceiling before relying on it. index.dev Article · How Founders Use AI Google Stitch review: AI UI design tool features, pros and cons Index.dev
  20. Generates multi-screen mobile mockups from a prompt, editable by drag and drop. uizard.io Tool · How Founders Use AI Uizard Autodesigner Uizard
  21. Video · How Founders Use AI Uizard Autodesigner full walkthrough Uizard
  22. Video · How Founders Use AI Uizard Screenshot: design an app using a screenshot Uizard
  23. Prompt-to-app inside Figma, strongest when design fidelity matters. figma.com Tool · How Founders Use AI Figma's free AI app builder Figma
  24. Another prompt-to-iOS-and-Android option worth benchmarking against Rork. manus.im Tool · How Founders Use AI Manus AI no-code mobile app builder Manus

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The hubs

Starting Up Find an idea, validate it, build, and land your first customers. 1046 questions GTM Go-to-market, from breaking in to how the best teams do it. 352 questions D2C Building a direct-to-consumer brand, India-first. 482 questions Wealth Paying yourself, ESOPs, secondaries, and de-risking founder wealth. 154 questions How Founders Use AI How founders actually put AI to work, mapped topic by topic. 278 questions Glossary Plain-language definitions of the startup and VC terms you'll hit. 390 terms
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