I kept re-reading my notes and forgetting them anyway. Active recall plus spaced repetition is what actually works, but making flashcards by hand was tedious enough that I never stuck with it.
So I built StudyLoop — you paste your notes (a chapter, lecture notes, an article) and it generates clean question/answer flashcards, then schedules them with spaced repetition so each card comes back right before you'd forget it.
The stack
- Next.js (App Router) on Vercel
- Neon (serverless Postgres)
- An OpenAI-compatible LLM (OpenRouter / claude-haiku) for card generation
- Magic-link auth (no passwords) + Stripe for Pro
How it works
- You paste notes, the LLM returns a JSON array of
{ front, back }cards - Cards are stored with SM-2-lite spaced-repetition fields (ease, interval, due date)
- Study mode surfaces due cards; you rate Again / Hard / Good / Easy and the schedule updates
It's live and free to try (3 decks, nothing to install): https://studyloop-jelonmans-projects.vercel.app
Genuinely after feedback: does "paste notes, get a deck" fit how you actually study, or is making the cards yourself part of the value? And for anyone who's launched a study tool, what got you your first users?
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