Quiet flashcards for iPhone & iPad

A clean, offline-first flashcard app with spaced repetition. Import your Anki decks, study with cloze deletions, and track your progress โ€” no account required.

Download on the App Store

Why students choose sumi

๐Ÿ“ฅ Import Anki decks

Open your .apkg files directly on iPhone. Cards, formatting, and media come through. Switch from Anki in seconds.

๐Ÿง  Spaced repetition

Built-in SRS algorithm schedules reviews at the optimal time. Cards you know appear less often. Cards you struggle with appear more.

โœ๏ธ Cloze deletions

Create fill-in-the-blank cards with {{curly braces}}. Perfect for language vocabulary, medical terms, and exam prep.

๐Ÿ“ด Offline-first

Everything stored on your device. No account, no cloud, no internet needed. Your data stays yours.

๐Ÿ“Š Study insights

Daily goal tracking, streak counter, accuracy stats, and review forecasting to keep you on track.

๐ŸŽฏ Flexible import

Import from .apkg (Anki), CSV, TSV, plain text, and JSON. Bring your cards from anywhere.

sumi vs Anki for iOS

AnkiMobile costs $24.99. Here's how sumi compares.

FeaturesumiAnkiMobile
PriceFree (pro optional)$24.99
.apkg importโœ“โœ“
Spaced repetitionโœ“โœ“
Cloze deletionsโœ“โœ“
Offlineโœ“โœ“
Modern UIโœ“โ€”
No account neededโœ“โ€”
CSV/TSV importโœ“โ€”

Frequently asked questions

Can I import my Anki decks?

Yes. sumi reads .apkg files directly. Open the file on your iPhone or use the in-app import. Your cards, formatting, and media are preserved.

How does spaced repetition work?

After each review, you rate how well you remembered the card. The SRS algorithm then schedules the next review โ€” cards you know well appear days or weeks later, while difficult cards come back sooner. This is scientifically proven to improve long-term retention.

Is sumi free?

Yes. The free version includes 1 deck, 100 cards, and 2 imports. sumi pro unlocks unlimited decks, cards, imports, cram mode, reverse study, and detailed insights.

Does sumi work offline?

Completely. All data is stored locally on your device. No internet connection, no account, and no cloud sync required.

What file formats can I import?

sumi supports .apkg (Anki packages), CSV, TSV, plain text, and JSON files.

Is my data private?

Yes. sumi collects no analytics, no personal data, and uses no third-party tracking. Everything stays on your device. Read our privacy policy.

Learn more

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Start studying smarter

Free on the App Store. No account required.

Download on the App Store