RubiMask - OCR PDF Scanner

【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