sumi vs Deckmere Flashcards
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
sumi
This app offers a calm and focused approach to revision using spaced repetition. It allows users to import or create study decks and provides intelligent scheduling for optimal memory retention without distracting gamified elements.
- Spaced repetition with FSRS algorithm
- Import Anki (.apkg), CSV, TXT, JSON decks
- Offline study support
- Detailed progress insights
- Calm, distraction-free interface
- No account or server required
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You believe in spaced repetition. You bounced off the complicated apps. sumi is for you. It keeps the science and drops the friction, so revision feels calm instead of overwhelming. HOW IT WORKS Make a deck or import one, then open sumi and review the cards it gives you that day. That is the whole routine. sumi uses FSRS, the modern spaced-repetition algorithm, to show each card right before you would forget it, so you remember more while studying less. CALM BY DESIGN An ink-on-paper interface with nothing competing for your attention. No streaks guilting you, no leagues, no badges. A gentle daily review you will actually want to come back to. BRING YOUR OWN DECKS Already have decks? Import them in seconds. sumi reads Anki .apkg files, plus CSV, TXT and JSON, so moving over takes minutes, not an afternoon. PRIVATE BY DEFAULT No account. No servers. Your cards, your progress and your history never leave your device. Nothing is tracked. Nothing is uploaded. Your data stays with you. BUY ONCE, YOURS FOREVER No subscription. Unlock sumi pro one time and keep it: unlimited decks and cards, unlimited imports, cram and reverse study modes, and detailed progress insights. Restore anytime. WHAT YOU GET - FSRS spaced repetition that schedules every review for the best long-term memory - Import from Anki (.apkg), CSV, TXT and JSON - Study offline, anywhere - Clean stats: retention, review history, cards mastered - Light and dark, easy on the eyes Calm, focused and entirely on your device. That is sumi.
Deckmere Flashcards
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Deckmere is a flashcard app for your own study material. Bring it in from Anki, a spreadsheet or your notes, review it with FSRS spaced repetition, and check the answers you feel sure about. Buy once for the authoring tools. No subscription or account. BRING YOUR MATERIAL • Import Anki packages (.apkg and .colpkg, older and current exports) with formatting, tags, subdecks, images and audio. Basic, reversed and cloze notes come across; anything Deckmere cannot show is named before you import. • Keep your Anki progress or start fresh, your choice. Importing the same deck again updates what changed and keeps your own edits. • Import CSV or TSV files and pasted two-column lists, with a preview of the real cards before anything is saved. • Write cards yourself, or try the sample deck. • Every deck gets a picture that follows its name, or one you choose. REVIEW WITH FSRS • Today shows what is due, a short session of ten cards or a few minutes, and a clear rest when nothing is due. • Reveal the answer, then choose Again, Hard, Good or Easy and see each next interval before you choose. • Undo the last grade. Hear a side read aloud with your device's voices in the deck's language. CHECK WHAT YOU ARE SURE ABOUT • A self-check takes up to 10 cards: type an answer and choose your confidence before you see the card. • Mark your answers yourself and retry the mistakes, confident ones first. Your FSRS schedule is not changed. YOUR DATA, YOUR FILES • Back up everything to one file and restore it on your iPhone or iPad. Restoring only adds what is missing. • Export to Anki, or export card text as CSV or TSV. • Your library stays on your device and can sync between your Apple devices through your own iCloud. FREE, AND PRO ONCE • Free, with no cap and no time limit: cards and decks, review, the self-check, import, export and backup, and five generated cards a day. • Pro: add images, audio, cloze and image occlusion; make cards from PDF pages and photos; keep a saved mistake list and self-check history; plan toward a goal date; edit many cards at once; draft cards without a daily limit. • Card drafting runs on your device, with Apple's on-device model where available and a rules-based helper elsewhere. The screen says which one drafted. • One purchase, Family Sharing included. Restore Purchases restores it with the store account used to buy it; purchases on Apple and Google are separate.
Screenshots
Verdict
The clearest difference is update cadence: Deckmere Flashcards at fortnightly against sumi's every 3 months. sumi's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. sumi sells 2 in-app purchases, starting at $1.99 per month and Deckmere Flashcards sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
sumi ships an update every 3 months, Deckmere Flashcards fortnightly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.
| Parameter | sumi | Deckmere Flashcards |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | EDEN LOXLEY TIGER ROYE | Oomny B.V. |
In-app purchases
sumi
- sumi pro - monthly$1.991 Month
- sumi pro - lifetime$9.99
Deckmere Flashcards
- Deckmere Pro$11.99









