Deckstreak vs RecallKit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Deckstreak
A native flashcard app for iPhone and iPad that allows users to import existing decks and study using a spaced repetition system. It supports offline review with local media and offers tools for card creation, editing, and progress tracking.
- Import .apkg deck packages
- FSRS spaced repetition study
- Offline review with local media
- Rich text card creation and editing
- Browse and search cards
- Track study progress and streaks
- Home Screen widgets and reminders
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Deckstreak is a native flashcard app for iPhone, built for people who already have decks and want a focused way to review them anywhere. Import .apkg deck packages, keep your media available offline, and study with FSRS spaced repetition. No subscription. No required account. Just open your deck and start reviewing. KEY FEATURES - Import .apkg deck packages from Files or the iOS share sheet, together with your study progress - Study with FSRS spaced repetition: tap a card to reveal it, then rate it with a button or a swipe - A clear daily goal for new cards that shows the cards left and how long they take - Review offline with local media, images, audio, HTML, cloze cards, and LaTeX support - Create and edit cards with rich text, tags, images, audio, and cloze helpers - Search both sides of every card, then edit, pause, or delete it - Keep your habit visible with a streak and daily reminders DECKSTREAK PRO (ONE-TIME PURCHASE) - Listen mode: cards read aloud and rated with your headphones, the lock screen, or your car's controls. Your first session is free - Statistics: retention, streaks, review history, and upcoming workload - Home Screen widgets with your due cards and streak - Automatic backup of your collection and media to your own iCloud Importing, studying, creating, and editing cards stay free. Deckstreak is designed for language learners, medical students, certification prep, and anyone who studies from large flashcard decks on iOS. PRIVACY Anonymous product analytics and optional in-app feedback help improve Deckstreak. No account, advertising, session replay, or personal identifiers are used. Your decks and review history stay on your device and, if you use backup, in your own iCloud.
RecallKit
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Flashcards that stick. Modern spaced repetition, seven curated language courses — nearly 20,000 cards — or bring your own decks via CSV / TSV / .apkg. No account, no tracking. iCloud sync. CURATED LANGUAGE COURSES Each course is structured around real proficiency frameworks. Cards include audio, example sentences, and grammatical gender / tone where relevant. • French (CEFR) — A1 to C2, 3,899 cards • Spanish (CEFR) — A1 to C2, 3,958 cards • Italian (CEFR) — A1 to C2, 4,237 cards • German (CEFR) — A1 to C2, 4,133 cards • Japanese (JLPT) — N5 to N1, 2,338 cards • Korean (TOPIK) — A1 to B1, 1,165 cards • French Street Speak — 274 cards of colloquial vocabulary native speakers actually use The French course also includes a listening-comprehension beta: audio-first cards born from the words you already know, so your ears catch up with your eyes. BRING YOUR OWN Already have a flashcard library? Import from: • CSV / TSV files — including tab-separated files like those exported from popular study tools, or anything you can paste from a spreadsheet. Map columns to Front, Back, Tags. Map a header row if you have one. • .apkg files — with media, sub-decks, and review history preserved. Drop the file from Files, iCloud Drive, or any document provider. Imports run on a background thread so a 5,000-card deck doesn't lock the app. Failed rows (malformed quoting, missing fields) are reported with a downloadable CSV you can fix and re-import. HOW STUDYING WORKS FSRS-5 is a modern spaced-repetition algorithm that schedules each card based on your actual recall, not arbitrary intervals. Forgetting curves shorten over time. The algorithm has 19 parameters that adapt to your specific learning history, and you can re-optimise them from your own reviews after a few weeks of use. Each language course pairs recognition (see the word, recall the meaning) with production (read the example sentence, produce the target word with full grammatical context). Production cards unlock once a word has been seen a few times — so you're not blindly guessing on day one. Native-quality TTS reads cards in the target language using your installed iOS voices. Settings includes a voice setup helper that links straight into the iOS pronunciation download for each language. OCR and voice dictation are built in for card authoring — point the camera at a textbook page or speak the word, and the recognised text drops into the field. SYNCS ACROSS YOUR DEVICES Decks, cards, review history, streak, achievements — everything syncs through your private iCloud account. Same Apple ID, same state on iPhone and iPad. No third-party servers see your study data. A pull-to-refresh on the home screen forces a sync if you ever need it. PRIVACY No account. No sign-up. No third-party login. No tracking pixels. No selling data. We never could even if we wanted to — there's nothing to sell. The aggregate product-health signals we do collect (app launch, import succeeded, review submitted) are bucketed, anonymous, and never include card content, deck names, or review ratings. You can turn them off entirely from Settings. Your decks, your reviews, your progress — they live on your device and in your private iCloud database. That's it. --- Open the App Store, install, study. Built by one person who wanted spaced repetition to feel less like a chore and more like a tool.
Screenshots
Verdict
The clearest difference is in-app purchases: RecallKit at none against Deckstreak's 1. Deckstreak's advantage is update cadence (weekly vs fortnightly). On price, ads, device support and iOS requirement 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. Deckstreak sells 1 one-off in-app purchase. RecallKit asks for nothing beyond the download.
Deckstreak ships an update weekly, RecallKit fortnightly. The most recent releases landed on October 25, 2026 and October 14, 2026 respectively.
| Parameter | Deckstreak | RecallKit |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Weekly — better | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 16 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Timothy Krechel | Sami Mandeel |
In-app purchases
Deckstreak
- Deckstreak Pro$6.99
RecallKit
No in-app purchases









