# ANCHOKO: Image Occlusion — Hide any diagram and learn it > Hide any diagram and learn it (iPhone/iPad app by BEAK,K.K..) - Source: https://appshunter.io/ios/app/anchoko-image-occlusion/id6757253397 (this page in markdown: same URL + `.md`) - Developer: [BEAK,K.K.](https://appshunter.io/developer/1808079760) - Category: Education, Reference - Price: Free with in-app purchases (on sale, was $2.99) - Age rating: 4+ - Requires: iOS 13.0 · 101 MB - Languages: American English - Released: 2026-01-13 - Data updated: 2026-09-23 - User reviews in markdown: https://appshunter.io/ios/app/anchoko-image-occlusion/id6757253397/reviews.md ## What is ANCHOKO? ANCHOKO — hide any diagram, then learn it Image occlusion on your phone, free. Drop boxes over the labels on an anatomy plate, a circuit drawing or a map, and each box becomes its own card. IMAGE OCCLUSION THAT ACTUALLY WORKS ON A PHONE • Draw rectangles, ellipses or free-form shapes over any picture • Each shape becomes a separate card, so one diagram teaches you twenty things • Pinch to zoom while you place shapes — small labels stay reachable • Show the other boxes while you answer, or hide them • Works on photos, screenshots, textbook scans and imported PDF pages BRING YOUR ANKI DECKS • Import .apkg files and keep your cards, your images and your deck names • Cloze deletions come across as cloze deletions • Image occlusion notes keep their boxes, on the right part of the picture • Note types ANCHOKO does not know are still imported, front and back — nothing is lost • You are told what changed during the import. No silent edits PHOTOGRAPH A PAGE, GET CARDS • Photograph notes, a textbook or a handout and the text is read on your device • Cards follow the page layout — "term: meaning", "word translation", numbered lists • You see the recognised text before any card is made, so misreads never become cards RED AND COLOURED TEXT, FOUND FOR YOU • Anything written in red pen or pink highlighter is detected and covered automatically • Switch to green, blue or yellow when that is what you used • Popular with students in Japan, who use a red filter sheet for exactly this REVIEW AT THE RIGHT MOMENT • The SM-2 algorithm works out, card by card, when you are about to forget • Four ratings — Again, Hard, Good, Easy — reshape the interval • See your forgetting curve and how much is left • Cap how many new cards appear each day HANDS-FREE BROWSING Cards flip themselves at timings you choose, with read-aloud for commutes. Auto-advance never grades your cards, so your review schedule stays intact. • Also: cloze deletions, and annotations written straight onto a picture YOUR PHOTOS STAY ON YOUR DEVICE Text recognition, red-text detection and PDF rendering all happen on your device. Photos and PDFs never reach an ANCHOKO server. MORE • XP, levels, 18 achievement badges, and a weekly ranking with friends • Publish your own decks, or download and try decks other people made PRICING Free, for as long as you like: • Up to 200 cards you make yourself — they stay yours even if you stop paying • Unlimited image occlusion boxes on the cards you make • The full spaced-repetition engine, and unlimited community decks • Photo-to-cards and red-text detection, 3 a day ANCHOKO Pro adds: • Unlimited cards • Unlimited photo-to-cards and red-text detection • PDF import • Auto-advance • Backup export • Your progress follows you across devices (below) Three plans: monthly, yearly, or a one-time Lifetime purchase. Amounts are shown on the purchase screen in the app. PICK UP WHERE YOU LEFT OFF, ON ANY DEVICE • iPhone, iPad, Android and the browser share the same cards, study record, streaks and XP once you sign in • Started without an account? Signing in later keeps everything you already made SAMPLE DECKS, ONLY IF YOU WANT THEM Nothing is added behind your back. You pick what you want, added cards never count toward the free limit, and you can delete them at any time. LANGUAGES English, Japanese, Simplified Chinese, Korean, Spanish, French, Vietnamese, Thai ALSO IN YOUR BROWSER Sign in with the same account and study without installing anything. ABOUT ANCHOKO PRO Monthly and yearly are auto-renewing subscriptions: they renew unless cancelled at least 24 hours before the period ends, and you can manage or cancel them in your account settings. Lifetime is a single payment — nothing renews and there is nothing to cancel. ANCHOKO is not affiliated with or endorsed by Ankitects Pty Ltd. "Anki" names only the .apkg file format ANCHOKO can import. • Terms of Use: https://b19.co.jp/terms-of-service/ • Privacy Policy: https://b19.co.jp/privacy-policy/ ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | ANCHOKO Premium | $2.99 | per month | ## Version history (last 5 releases) ### 2.3.0 — 2026-09-20 IMPORT YOUR ANKI DECKS • Read .apkg files directly. Cards, images and deck names come across as they are • Image occlusion notes keep their boxes, on the right part of the picture • Cloze deletions stay cloze deletions, and hinted clozes arrive with the right answer • Note types ANCHOKO does not know are still imported, front and back. Nothing is dropped • When the import finishes you are told exactly what changed A SAMPLE DECK BUILT FROM DIAGRAMS • 12 cards with boxes placed over a circuit and a distillation setup • Name the hidden part — a worked example of image occlusion • Added cards never count toward the free limit, and you can delete them at any time A REBUILT FIRST SCREEN • Diagram-based study goals now come first in the list • The exams shown near the top match the language you use FIXED • Some .apkg files hold both old and new data inside. ANCHOKO read the old copy and imported only part of the cards • Text labels drawn on a picture were imported as occlusion boxes ### 2.1.1 — 2026-09-07 BugFix ### 2.0 — 2026-08-27 v2.0.0 — now free PRICING • The app is now free. On the free plan you get up to 200 cards you make yourself, photo-to-cards and red-text detection 3 times a day, and the full spaced-repetition and test features. • PDF import, auto-advance, backup export and removing those daily and card limits require ANCHOKO Pro, an auto-renewing subscription. • If you already bought the paid version, Pro stays yours at no extra cost, with none of the free-plan limits. NEW • Photo to cards: photograph notes or a textbook and the text is read on your device and turned into cards • Automatic red-text hiding: red pen and highlighter are found and covered for you. Green, blue and yellow work too • PDF import: bring in a textbook or handout page by page • Auto-advance: cards flip themselves at timings you choose. It never grades your cards, so your review schedule stays intact • Start without signing up. Create an account later in Settings and everything you made carries over Photos and PDFs are processed on your device and never sent anywhere. FIXED • Read-aloud did not work on cards you made yourself • The achievements and ranking screens could not be opened • The achievements screen and the spaced-repetition explainer showed raw text keys instead of wording, in all 8 languages • When the trial ended, everything except studying one deck was locked. Studying and testing are now free for good, and you can make up to 200 cards free • Shared links did not open correctly terms-of-service　https://b19.co.jp/terms-of-service/
 privacy-policy　 https://b19.co.jp/privacy-policy/ ### 1.5.3 — 2026-06-09 v1.5.3 update [New Features] - On-device AI card generation (fully local, free, privacy-friendly) - Study reminder notifications [Improvements] - More stable deep link sharing - Improved home screen [Fixes] - Fixed a crash on launch and during study - Minor stability improvements Thank you for using ANCHOKO. ### 1.5.2 — 2026-05-04 v1.5.2 major update [New Features] - Haiku & seasonal words deck - Full 8-language support (JA/EN/ZH/KO/TH/VI/FR/ES) - Achievements, ranking & friend invites - PIN lock for privacy - Deep link sharing [UX Improvements] - WCAG 2.2 AA accessibility compliance - Improved paywall design - Furigana / pinyin display - Larger tap targets [Learning Algorithm] - Enhanced FSRS & interleaving - Automatic leech detection - Due card prediction Thank you for using ANCHOKO. ## Apps similar to ANCHOKO | App | Rating | Price | Category | | --- | --- | --- | --- | | [Spanish Verbs: Learn & Test](https://appshunter.io/ios/app/spanish-verbs-learn-and-test/id6738664765) | — | Free | Education | | [英単語ラッシュ　英語学習タイムアタック](https://appshunter.io/ios/app/id6759260013) | — | Free | Education | | [memry AI-Powered Memorization](https://appshunter.io/ios/app/memry-ai-powered-memorization/id6753896349) | — | Free | Education | | [Jungle Library: Sounds & About](https://appshunter.io/ios/app/jungle-library-sounds-and-about/id6758163956) | — | $4.99 | Education | | [Flashnote: Flashcards app](https://appshunter.io/ios/app/flashnote-flashcards-app/id6745518841) | — | Free | Education | | [フラッシュ英文法](https://appshunter.io/ios/app/id6475672834) | — | Free | Education | ## More apps by BEAK,K.K. - [Japan Spot the Difference](https://appshunter.io/ios/app/japan-spot-the-difference/id6751223880) - [スタンプ手帳スケジュール](https://appshunter.io/ios/app/id6751338666) - [北海道検定コンプリートドリル](https://appshunter.io/ios/app/id6751550059) - [京都検定コンプリートドリル](https://appshunter.io/ios/app/id6751565756) - [インカメ10倍メイク](https://appshunter.io/ios/app/10/id6751721940) - [マイクに叫んで山手線ゲーム オンライン](https://appshunter.io/ios/app/id6751933971) All apps by BEAK,K.K.: https://appshunter.io/developer/1808079760 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-23.*