Comparison · Roundup
There is no single best flashcard app for everyone — it depends on whether you value depth, library, or simplicity. Here is an honest look at the top free options, and why Brainfy leads if you want free, ad-free, AI-built cards with real study modes.
| Brainfy | Anki / Quizlet / Knowt | |
|---|---|---|
| AI card generation | Built in, free | Add-ons (Anki) / paid (Quizlet) / yes (Knowt) |
| Spaced repetition | Yes (SM-2 style) | Deep (Anki) / limited (Quizlet) / limited (Knowt) |
| Study modes | Learn, Test, Match, Cloze | Vary; some gated |
| Ads on free use | None | None (Anki) / yes (Quizlet, Knowt) |
| Focus timer + planner | Built in | No |
| Price | Free (beta) | Free / freemium |
If you want one app that is genuinely free, has no ads, builds cards from your notes with AI, schedules them with spaced repetition, and gives you Learn, Test, Match, and Cloze on top — Brainfy covers all of it in the browser. And because it imports Anki, Quizlet, and CSV decks and exports back to CSV, choosing it does not lock you out of the others.
It depends on your priority: Anki for the deepest free spaced repetition, Quizlet for the biggest library, Knowt for friendly free AI. For free AI cards plus real spaced repetition and study modes with no ads, Brainfy is the strongest all-rounder.
Anki and Brainfy are ad-free. Quizlet and Knowt show ads on their free tiers.
Brainfy and Knowt offer free AI card generation. Anki needs add-ons, and Quizlet puts AI generation behind a paid tier.
It is free during beta with no deck caps and no ads. There are fair-use guards on AI cost, but no paid tier to unlock the core flashcard and spaced-repetition features.
Yes. Brainfy imports Anki plain text, Quizlet exports, and CSV / TSV, and exports decks to CSV — so you can move between apps without losing your cards.
Brainfy is built by Aihan Mifthas · Last updated 2026-05-31. Open Brainfy →