Lectio: OCR, Math & Layout

Text, Tables & Formula OCR

Free · In‑App Purchases

Lectio is an OCR tool that lets you choose the engine for each task. It combines on-device recognition, professional OCR services and leading large language models to extract text from images, organize documents and convert formats. Photos, scans, PDFs, handwriting, classical texts, tables, complex formulas, columns and mixed layouts can all become editable, exportable content. Lectio preserves the original hierarchy, paragraphs and layout wherever possible, reducing manual entry and reformatting. Switch between recognition engines based on the file and use case, choosing the right balance of speed, accuracy and layout preservation. —USE CASES— ● Organize lecture slides, books and study materials Extract text, tables and formulas from slides, textbooks, notes and exercises with less manual typing. ● Recognize handwriting and classical texts Extract handwritten notes, annotations, classical works and historical documents for easier organization, search and storage. ● Prepare image content before asking AI When AI cannot read an image clearly, first convert it into structured text, then copy it into your conversation. ● Extract contracts, reports and paper documents Turn contracts, reports, scans and other paper materials into content that is easier to edit, archive and search. ● Recognize complex formulas and specialist material Process mathematical formulas, technical documents, research material and complex symbols while preserving structure wherever possible. ● Capture foreign-language text from video Extract foreign-language text from screenshots, subtitle frames and film clips for translation, study and organization. ● Convert complex documents Process files with tables, formulas, columns, hierarchies and mixed layouts, then convert them for editing or archiving. —CORE FEATURES— 1. Image and file recognition Import photos, library images, PDFs and other compatible files to quickly extract text, handwriting, tables and formulas. 2. Complex layout preservation Handle tables, columns, paragraph hierarchies, complex formulas and mixed layouts while preserving the original structure wherever possible. 3. Works online and offline Built-in on-device recognition works without a network connection. When online, use cloud services as needed for more complex content. 4. Flexible choice of recognition engines Choose an on-device engine, professional OCR service or leading large language model based on language, file type and layout complexity. Keys and data are protected. 5. Parallel task processing Run multiple recognition tasks at once to reduce waiting when processing images and files in batches. 6. Multiple conversion and export formats Export PDF, DOCX, Markdown, JSON and more for editing, archiving or use in other tools. Formats depend on the current version and membership tier. 7. Multi-platform support Use Lectio on iPhone, iPad, Mac and other supported platforms. Sign in with the same account across supported devices. 8. Flexible ways to use Lectio The trial and registered versions cover most everyday tasks. For higher limits, more parallel tasks and full export features, make a one-time purchase for lifetime membership. There is no auto-renewing subscription. —ABOUT THE BOUNDLESS TOOLS SERIES— Lectio is part of the Boundless Tools series. We reduce barriers across languages and cultures, helping you organize information, understand content and explore the world. The series includes: ● Lectio: image OCR, document organization and format conversion ● Translatio: companion text translation ● Auditio: speech recognition, pronunciation assessment and language learning ● Traditio: cross-platform file and clipboard transfer The tools work together through export, sharing and file transfer, connecting text recognition, translation, speech processing and file transfer. If you encounter a problem or would like to share a suggestion, contact us at: support@kaichenera.com

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Added regeneration. Fixed an issue with engine configuration updates.

Version 1.0.2

The developer, Shanghai Kaichen Jiyuan Technology Co., Ltd., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Purchases
    • Location
    • Contact Info
    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Shanghai Kaichen Jiyuan Technology Co., Ltd.
Size
  • 63.3 MB
Category
  • Productivity
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and 3 more
  • English, Japanese, Simplified Chinese, Traditional Chinese
Age Rating
4+
In-App Purchases
Yes
Copyright
  • Copyright © 2026 KaiChenEra Team All rights reserved.
  • Developer Website
  • Privacy Policy

    • More by Shanghai Kaichen Jiyuan Technology Co., Ltd.

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