iOS · FSRS · Unlimited free

Spaced repetition
you actually finish.

Modern FSRS scheduling, flawless Anki & Quizlet import, and automatic local backups. Unlimited decks & cards free — Pro is optional extras.

Unlimited decks & cards — FREE Backups & export — FREE FOREVER No ads between cards Works offline
Slap Card decks home with a 28-day streak
Why students switch

The big apps stopped respecting you.

Quizlet paywalls studying your own sets. Knowt charges $150 mid-exam-season. AnkiMobile is great scheduling wrapped in fifteen-year-old UX. Slap Card is the missing middle: modern, one-time, and data-safe.

37%

Leaving Quizlet

Tired of ads between cards and a wall in front of sets you made yourself.

49%

Burned by Knowt

Surprise $95–150 charges the week before an exam. Never again.

51%

Bouncing off AnkiMobile

Love the algorithm, hate the decade-old interface and deck-eating sync.

Everything you need

Built for students who make their own cards.

🧠

FSRS scheduling

The modern open spaced-repetition algorithm. Four ratings, smart intervals, zero setup to start.

📥

Import anything

Anki .apkg, Quizlet, CSV/TSV, Excel .xlsx, and public Google Sheets — scheduling and structure preserved.

🔒

Never lose a card

Automatic daily local backups. Restore and export are free forever — even on the free tier.

📅

Exam mode

Set a date and the scheduler compresses intervals so you peak right on exam day.

📈

Honest stats

Review heatmap, retention, a 7-day forecast, and a gentle streak — no guilt-trip notifications.

AI drafts (reviewed)

Turn notes into cards on-device on supported devices (Apple Intelligence). Every generated card is shown for your review before it saves.

Tactile by design

Tap to flip. Slap a rating.

Studying should feel good. Flip a card with a tap, rate it with a satisfying haptic, and watch the interval update live.

  • 3D card flip with spring animation
  • Four ratings with live next-interval previews
  • Mid-session kill-safe — quit any time, lose nothing
  • Undo your last rating instantly
Studying a card with the four-button rating row
Stay motivated

A season worth showing up for.

Your streak headlines the home screen. Stats celebrate the work — retention, reviews, a GitHub-style heatmap, and badges you actually earn.

  • 26-week review heatmap
  • Retention % and 7-day due forecast
  • Per-deck breakdown
  • Gentle streaks with a one-day freeze
Stats screen with streak, retention and heatmap
Pricing

Study free. Pro is optional.

Unlimited decks & cards on free. Pro unlocks themes, FSRS tuning, and AI drafts — monthly or lifetime.

Free forever
$0
unlimited decks & cards
  • Unlimited decks & cards
  • Full FSRS study, exam mode & card images
  • Anki / Quizlet / CSV import
  • Backups, restore & export
Slap Card Pro
$24.99
lifetime · best value · ≈ 5 months of Pro

or $4.99/mo · cancel anytime

  • Accent theme packs
  • Personalized FSRS tuning
  • AI card drafts on supported devices (Apple Intelligence)
Unlimited decks & cards, study, exam, images, backups & export stay free — forever.
Download on the App Store
FAQ

Questions, answered.

Is Pro pay-once or subscription?

Both. Lifetime is $24.99 once (best value). Monthly is $4.99/mo and cancel anytime. Unlimited decks & cards stay free either way — no ads between cards.

What does "backups free forever" mean?

Automatic local backups, restore, and full export (CSV + your cards) are never gated — on free or Pro. Your data is yours, and that's unconditional.

Can I bring my Anki / Quizlet decks?

Yes. Import Anki .apkg files (with scheduling state and structure preserved), Quizlet exports, CSV/TSV, Excel .xlsx, and public Google Sheets links — all with a column mapper. You always see a full preview before anything commits. Sheets downloads stay between your device and Google.

What's free vs. Pro?

Free includes unlimited decks and cards with the full FSRS scheduler, study, exam mode, card images, stats, import, and free backups/export. Pro adds AI drafts on supported devices (Apple Intelligence), custom themes & accent packs, and personalized FSRS tuning — available as $4.99/mo or $24.99 lifetime.

Does it work offline?

Completely. Slap Card is local-first — no account, no server required. Everything lives on your device.

What scheduling algorithm does it use?

FSRS (the Free Spaced Repetition Scheduler), the modern open algorithm that adapts to how you actually remember — more efficient than the classic SM-2.

Your cards. Yours forever.

Spaced repetition that's fast, tactile, and pay-once.

Download on the App Store