# RubiMask - OCR PDF Scanner — Image to Text, Audio & Books > Image to Text, Audio & Books (iPhone/iPad app by KeiK LLC.) - Source: https://appshunter.io/ios/app/rubimask-ocr-pdf-scanner/id6756987331 (this page in markdown: same URL + `.md`) - Developer: [KeiK LLC](https://appshunter.io/developer/1854674572) - Category: Utilities, Productivity - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 17.0 · 26 MB - Languages: American English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French (France), German (Germany) and 23 more - Released: 2025-12-30 - Data updated: 2026-08-18 - User reviews in markdown: https://appshunter.io/ios/app/rubimask-ocr-pdf-scanner/id6756987331/reviews.md ## What is RubiMask? 【PDF & Photo to Text, Audio, Translation】OCR, translate, and read aloud — all in ONE app! Load scanned books, PDFs, or photos → OCR text extraction → translate → listen with text-to-speech or export audio files. Everything in one app. For vertical Japanese books, RubiMask auto-masks ruby (furigana) before OCR, so small phonetic characters never scramble your text — a unique feature for Japanese book digitization. PROBLEM SOLVED "OCR scrambles my Japanese text because furigana mixes with main characters..." "Scanned books have terrible text recognition accuracy..." "I want to listen to my books as audio..." "I need to translate a printed document I photographed..." KEY FEATURES 【Multilingual OCR】 - Specialized recognition for vertical Japanese text - Supports English, Chinese, Korean, French, German, Spanish, and many more - Choose the recognition language per document - Edit recognized text directly in-app - Real-time character change tracking - Automatically removes running headers and page numbers, recognizing body text only 【Auto Ruby Masking】(unique for vertical Japanese) - Automatically detects text columns in vertical Japanese - Calculates column spacing to mask only ruby areas - Robust on gray-paper scans and irregular layouts - Fully adjustable column width and pitch, tap-to-edit masks 【Enhanced Photo Import】 - Auto perspective correction for documents photographed at an angle - Rotate photos 90° left or right - Recognizes high-resolution photos (12MP+) at full quality 【Translation】 - Translate recognized text with one tap (iOS 17.4+) - Great for language learning and reading foreign documents 【Text to Speech】 - Listen to recognized text with natural voices - Export audio files (M4A) — turn books into audiobooks! - Adjustable speed and voice 【Multiple Export Formats】 - Text file (.txt) - Audio file (M4A) - PNG images (ZIP compression available) - Masked PDF output - Save directly to Photos - Export options: insert page breaks or join lines into sentences 【Convenience Features】 - App interface available in 35 languages - Sample PDFs in your language to try every feature - Margin masking (remove page numbers, headers) - Manual mask editing (drag & drop) - Undo/redo for mask editing - Project save/load for pause & resume - Pinch-to-zoom for precise adjustments PERFECT FOR - Digitizing paper books and rare editions - Extracting text from novels and documents - Preparing source text for translation - Creating furigana-free versions for Japanese learners - Converting books to audiobook format - Creating accessible text for screen readers - Reading printed foreign-language documents PREMIUM FEATURES - Remove all ads - Unlimited pages (free: 100 pages) - Unlimited project saves (free: 3 projects) - PDF export - Audio export (M4A) Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://keik.co.jp/rubimask/privacy-en.html ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | RubiMask Premium | $2.99 | per month | | RubiMask Premium | $11.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | RubiMask Premium | $19.99 | one-time | ## Version history (last 5 releases) ### 1.50 — 2026-08-12 Minor improvements and bug fixes. ### 1.40 — 2026-07-31 • Improved OCR accuracy — recognizes only the body text and automatically removes running headers and page numbers • Auto perspective correction: documents photographed at an angle are straightened before recognition • Rotate photos by 90° • Vertical-text OCR now works with high-resolution photos (over 12MP) • New export options: insert page breaks, or remove line breaks to join sentences • Preview a sample of the recognized text before exporting • Projects created from photos now reopen correctly after saving • Stability improvements and bug fixes ### 1.3 — 2026-06-16 • The app is now available in 35 languages (switch the app language in Settings) • Text recognition (OCR) in many languages, plus a translate feature and sample PDFs in your language • Improved automatic ruby (furigana) detection — more robust on gray-paper scans and irregular layouts • Improved OCR accuracy and stability, including on large PDFs • Editor improvements: undo/redo, live slider preview, and tap-to-edit automatic masks ### 1.2 — 2026-02-20 Minor bug fixes and performance improvements. ### 1.1 — 2026-02-02 Minor bug fixes ## Apps similar to RubiMask | App | Rating | Price | Category | | --- | --- | --- | --- | | [Furigana PDF](https://appshunter.io/ios/app/furigana-pdf/id1516570722) | 4.0 (2) | Free | Utilities | | [Teach me Furigana - AI Reader](https://appshunter.io/ios/app/teach-me-furigana-ai-reader/id6450828715) | — | Free | Utilities | | [ResumePlayer](https://appshunter.io/ios/app/resumeplayer/id6447594730) | — | Free | Utilities | | [Stamp Identifier & Scanner AI](https://appshunter.io/ios/app/stamp-identifier-and-scanner-ai/id6758962881) | — | Free | Utilities | | [100-Hour Rule](https://appshunter.io/ios/app/100-hour-rule/id6517349655) | — | Free | Utilities | | [- Timekeeper -](https://appshunter.io/ios/app/timekeeper/id1599214125) | — | Free | Utilities | ## More apps by KeiK LLC - [HieroNote: Outliner & Notes](https://appshunter.io/ios/app/hieronote-outliner-and-notes/id6755780111) - [OCR Keyboard - Photo to Text](https://appshunter.io/ios/app/ocr-keyboard-photo-to-text/id6755959544) - [Petite Scale - Weight Tracker](https://appshunter.io/ios/app/petite-scale-weight-tracker/id6756008178) - [Mood Diary: Period & PMS Log](https://appshunter.io/ios/app/mood-diary-period-and-pms-log/id6756066013) - [MyDailyEats - Food Photo Diary](https://appshunter.io/ios/app/mydailyeats-food-photo-diary/id6756123115) - [SmartText Keyboard](https://appshunter.io/ios/app/smarttext-keyboard/id6756229737) All apps by KeiK LLC: https://appshunter.io/developer/1854674572 --- *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 2026-08-18.*