SourceTwin AI
Keep document variants safely
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Find PDFs and scans that represent the same document, keep every useful page or mark, and export a verified safe set.
SourceTwin AI finds different file representations of the same real-world document. Select PDFs, scanned PDFs, JPEG, PNG, HEIC, or TIFF images from Files or Photos. SourceTwin creates private working snapshots, then compares embedded text, on-device Vision OCR, page coverage, SHA-256 hashes, and visual fingerprints. It groups likely matches even when filenames or formats differ.
Review one candidate group at a time. The suggested minimum safe set preserves every detected page, searchable text source, and visible difference. More than one file may stay when each preserves something useful. Low-confidence and unreviewed files remain included by default, and you make every final decision.
Create a separate safe-set folder containing byte-for-byte verified copies and a PDF audit. Selected source files are never renamed, moved, overwritten, or deleted. SourceTwin does not authenticate signatures, certify document completeness, or provide legal advice.
Free scans support up to 20 files and 100 pages, including the complete review workflow, safe-set folder, and PDF audit. SourceTwin Pro Lifetime is one non-consumable in-app purchase that supports up to 500 files and 2,000 pages per workspace, known-document memory, ZIP, CSV, JSON, SHA256SUMS, and local result history. There is no subscription.
Document analysis runs on device. SourceTwin has no account, ads, analytics, tracking, developer document server, or cloud AI. On supported Apple Intelligence devices, an on-device model may phrase verified evidence; deterministic rules remain authoritative and a local template is always available.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, VS 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Hainan Weixia Software Development Co., Ltd.
- Size
- 5.3 MB
- Category
- Productivity
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
English and 21 more
- English, Arabic, Danish, Dutch, Finnish, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- SourceTwin Pro Lifetime $6.99
- Copyright
- © 2026 Hainan Weixia Software Development Co., Ltd.