Diff Checker: Compare Text
Line & word split view merge
Only for iPhone
Free · In-App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Paste two versions and instantly see every line and word that changed — additions in green, deletions in red. Compare code, config or contracts on device.
Compare two versions of any text and see exactly what changed — line by line and word by word, highlighted the instant you paste.
Most "spot the difference" attempts end in squinting at two walls of text side by side. DiffCheck does the reading for you: paste an old version and a new one, and every addition turns green, every deletion turns red, so the change jumps out in a second. It works on code, config files, contracts and plain prose alike — and it never sends a single character off your device.
WHAT YOU GET
- See every change at a glance — additions in green, deletions in red, nothing missed
- Switch between line-level and word-level diffs to catch even a single edited character
- Read changes in a clean side-by-side split view that lines the two versions up
- Review hunk by hunk, accepting or rejecting each change to build a merged result
- Check diff statistics at a glance — lines added, removed, unchanged and overall similarity
- Copy a ready-to-use unified patch of any comparison straight to your clipboard
- Keep a local history of past comparisons so you can revisit what changed and when
- Save reusable snippets and sample diffs to compare the same text again fast
- Paste straight from your clipboard into either side in a single tap
- Learn how diffs work in a built-in Learn tab, from the LCS algorithm to the unified patch format
PERFECT FOR
- Developers reviewing code and config changes on the go
- Writers and editors checking edits between two drafts
- Legal and business users comparing contract or document revisions
- Students learning how diffs and the unified patch format work
WHY NOT JUST EYEBALL IT
Reading two versions by hand is where mistakes hide — a flipped number, a deleted clause, a changed flag. DiffCheck compares them character by character so you catch the change you would have scrolled right past. A gentle daily reminder helps you keep your review habit going.
PRIVACY
Your text never leaves your device. There are no accounts, no servers and no tracking — every comparison happens fully offline.
FULL ACCESS
DiffCheck is free for basic line-by-line comparison. Full Access unlocks word-level diffs, the side-by-side split view, saved comparison history and unified patch export. Choose the plan that fits:
- Weekly plan
- Yearly plan
- Lifetime one-time purchase
Payment is charged to your Apple ID at confirmation of purchase. Subscriptions auto-renew unless turned off at least 24 hours before the end of the current period; manage or cancel anytime in your App Store settings. The lifetime option is a one-time purchase.
Paste two versions now and see what changed in a second.
Terms of Use (EULA): https://web-levi.web.app/terms
Privacy Policy: https://web-levi.web.app/privacy-policy
Questions? https://web-levi.web.app/#contact
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Bug fixes and performance improvements.
Subscriptions
In-App Purchases
The developer, Phuc Pham, 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
- Provider
- Phuc Pham
- Size
- 5.4 MB
- Category
- Developer Tools
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Document Compare · Lifetime SAR 89.99
- Change Tracker · Yearly SAR 39.99
- Code Review · Weekly SAR 9.99
- Copyright
- © 2026 Phuc Pham