Both are free Quizlet alternatives. Knowt is built around note-taking; GoodOff is built around remembering what you studied. Here is the honest comparison.
Knowt does notes well. GoodOff does retention well. Where they overlap, the differences are in algorithm depth and study UX.
| Feature | GoodOff | Knowt |
|---|---|---|
| Spaced repetition algorithm | FSRS by default | Spaced repetition mode (algorithm unspecified) |
| Voice tutor | Yes, hands-free study | No |
| Pomodoro timer | Built in | No |
| AI flashcard generation | Gemini Pro, 25 free AI credits/mo | Kai AI on free tier |
| Format support | 90+ formats: PDF, DOCX, PPTX, MP4, YouTube | Videos, PDFs, PowerPoints |
| Quizlet import | Built in | Chrome extension |
| Mobile-first study UI | TikTok-style vertical swipe | Traditional flashcard interface |
| Note-taking | Light note view; not the focus | Robust notes + summaries |
| Free tier | $0 forever; FSRS + unlimited manual cards | $0 forever; all study modes free |
| Paid tier | Pro $4.99/mo, Standard $8.99/mo, Max $29.99/mo | Plus $5/mo, Ultra $19.99/mo |
Knowt is a note-taking app that adds flashcards on top. GoodOff is a memorization engine with FSRS at the core. If you take notes from lectures and want them organized, Knowt is great. If you want to remember what you studied six months later, GoodOff is built for that.
Knowt: notes-first workflow
GoodOff: retention-first workflow
Both are valid; pick the job
GoodOff has a built-in voice tutor — ask questions and get explanations on a walk, on the train, or while exercising. Knowt does not offer a voice mode; you study at the screen.
Conversational study sessions
Works on commute or workout
Powered by Gemini Pro
GoodOff uses FSRS — the open-source spaced repetition scheduler that consistently outperforms older algorithms in published benchmarks. Knowt has a spaced-repetition mode but does not document which algorithm it uses or expose retention parameters.
Pre-configured, no setup
Stability, difficulty, retrievability per card
Same algorithm power users moved Anki to
Yes. The Free plan is $0 forever and includes FSRS spaced repetition, unlimited manual flashcards, study streaks, and 25 AI credits per month for AI-generated cards. No credit card, no trial.
Quizlet sets import directly. Knowt sets can be exported and brought into GoodOff via standard flashcard formats. Cards and decks transfer cleanly.
Note-taking. Knowt is genuinely strong at turning lecture videos into structured notes and summaries. If your primary need is organized class notes — and flashcards are a side feature — Knowt is the better fit.
Memorization at scale. FSRS by default, a built-in voice tutor for hands-free study, a Pomodoro timer, native iOS and Android apps with a TikTok-style swipe interface, and 90+ supported file formats including YouTube and MP4 video.
Knowt does well on Quizlet-replacement queries because it offers learn mode, practice tests, and matching games for free. GoodOff covers the same ground for flashcards and spaced repetition while adding voice tutoring, the FSRS algorithm, and broader file-format support.
Last updated: April 26, 2026. Knowt feature and pricing data verified from knowt.com/free-quizlet-alternative and knowt.com/plans.
If your goal is remembering what you studied six months from now, GoodOff is purpose-built. Free forever, AI-powered, voice-enabled.
