How MODO works

MODO is a spaced-repetition flashcard appfor mastering any subject. Instead of cramming and forgetting, you review cards just before you'd forget them — so knowledge sticks for the long term with minimal time.

• Sign up (email or Google) to save progress, or hit Try as guest to look around.
• Pick a subject from the home catalog, open a session, and start reviewing cards.
• Guests aren't tracked (no XP, streaks or leaderboard) — sign in any time to start saving.

Each subject has weekly sessions, made of concepts. Every concept has a flashcard:

• Multiple-choice — pick the right answer; an explanation follows.
• Flip cards — reveal the answer, then rate how well you knew it (Again / Hard / Good / Easy).
• Each session also has a cheat sheet and concept explanations for reference.

MODO schedules reviews with the SM-2 algorithm. Answer well and a card's next review is pushed further out; struggle and it returns sooner. A concept becomes mastered once your score passes 70%. Studied cards resurface when they're due — which powers Study Today.

• Study Today gathers every due card across your subjects into one queue — tap the CTA on the home screen.
• It only shows cards you've already started, so untouched subjects never flood it.
• A daily goal (20 reviews) tracks your progress for the day with a bar that fills as you go.

Open Analytics from any session page to see exactly where you stand:

• Session summary — overall mastery %, concepts mastered, cards due now, and answer accuracy.
• A per-concept breakdown with a status (New / Learning / Mastered), a mastery bar, attempts, accuracy and when it's next due.
• A mini history of your recent answers per concept, so weak spots are easy to spot.

XP is earned as you review and is fully cumulative:

Levels climb on a curve — L2 at 100 XP, L3 at 400, L4 at 900, L5 at 1,600 (each level needs more than the last). Your level and XP bar show in the home header.

Review on consecutive days to build a streak 🔥. The longer it runs, the more bonus XP each active day earns (up to a 7-day cap). Miss a day and it resets.

See how you rank against other learners. Sort by Level, cards Solved, concepts Mastered, or Streak. Pick a username and style in Settings to appear there.

Review faster without the mouse:

• Go to Settings → Notifications → Daily reminders and tap Turn on, then allow the browser prompt.
• You'll get a daily nudge when you have cards due, so you can keep your streak alive.

MODO is available in 10 languages. Change it under Settings → Language — the interface and content switch instantly, and right-to-left languages (Arabic, Hebrew) are fully supported.

In Settings you can set your username (shown on the leaderboard), pick an avatar, and choose a style that recolors your whole MODO experience with an accent theme.

• Avatars: Owl, Fox, Wolf, Dragon, Cat, Robot.
• Styles: Scholar (blue), Warrior (orange), Shadow (purple), Sage (green), Maverick (gold) — each sets your accent color across the app.

• iPhone (Safari): Share → Add to Home Screen.
• Android (Chrome): tap the Install app prompt, or use the ⋮ menu.
• Desktop: an install icon appears in the address bar.
• Installed, MODO runs fullscreen and shows a friendly offline screen when you lose connection.

Try as guest lets you explore everything without an account. Guests aren't tracked — no progress, XP, streaks or leaderboard. Use Exit in the menu to leave guest mode and return to the landing page.

• Sign-in (email or Google) is handled securely by Clerk. Your email, password and Google login stay with Clerk — MODO only ever sees an anonymous account ID.
• We store the username you choose, your avatar and style, your review history and mastery, and — only if you opt in — your notification subscription.
• We do not store your email address, password, or any payment details.
• Your XP, levels and streaks are computed from your review history, so they're always accurate and update retroactively.
• Guests are never tracked — nothing is saved until you sign in.

Subjects are hand-crafted — each is a full set of weekly sessions with original explanations and flashcards, and the catalog grows over time. Progress is tracked separately for every subject you start.

Want something we don't have yet? Request a subject (pick the 📚 Subject tag) and tell us what you're studying.

• Review daily. Short, regular sessions beat occasional cramming — that's the whole point of spaced repetition.
• Rate honestly. On flip cards, don't mark "Easy" if you guessed — accurate ratings make the schedule work.
• Clear Study Today first. Knock out due reviews before learning new cards, so nothing slips.
• Keep the streak. Even a few cards a day keeps momentum — and bonus XP — going.