Off Lens vs TXTdiff
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Off Lens
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OffLens is a fully offline OCR app built on Apple’s VisionKit. Capture or pick photos, draw a precise crop, and recognize text in multiple languages without sending any data to servers. Your images and text stay on your device. Key features: · Offline by design: No uploads, no tracking, no ads. · Precise crop first: Drag corners or edges to target exactly what you need. · Multi-language OCR: Recognize text across many languages; auto-detect supported. · Proofread with highlights: See bounding boxes over the original image to verify accuracy. · Editable results: Review recognized text in a clean editor and copy with one tap. · History on-device: Keep up to 100 entries locally; view, edit, or delete anytime. · Camera and gallery: Snap a photo or import from your library; optional save-back after cropping. · Share and export: Copy lines or full results; share with friends. · Privacy-first: No analytics, no remote processing—everything runs locally. How it works: 1. Choose Photo or Camera, then draw the crop box. 2. OffLens runs VisionKit OCR offline and overlays highlights for quick review. 3. Edit text if needed, then copy or share. Why OffLens: · Great for receipts, documents, slides, whiteboards, books, and multilingual content. · Works anywhere—even without a network. · Fast, accurate recognition powered by VisionKit. Need help? Contact: shungyy8@gmail.com.
TXTdiff
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The App is a text verification and printing comparison tool based on optical character recognition (OCR) and barcode detection technology, designed for enterprise quality inspection use cases. It allows users to: • Capture photos via camera or import images from the photo library or Files app for text verification; • Automatically recognize text in images locally on-device using the Apple Vision framework; • Compare recognition results against reference text line by line and character by character to generate difference reports; • Perform barcode recognition and comparison, supporting EAN-13, EAN-8, Code128, ITF-14 and other major symbologies; • Export PDF inspection reports for archiving and traceability; • All core functionality runs locally on-device, except for in-app purchase verification. Privacy Policy: https://txtdiff.nashapp.top/privacy.html EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service: https://txtdiff.nashapp.top/service.html
Screenshots
Verdict
The clearest difference is in-app purchases: Off Lens at none against TXTdiff's 2. On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. TXTdiff sells 2 in-app purchases, starting at $14.99 per 6 months. Off Lens asks for nothing beyond the download.
| Parameter | Off Lens | TXTdiff |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | Feiyun Technology Ltd. | 宇 鄢 |
In-app purchases
Off Lens
No in-app purchases
TXTdiff
- Semi-Annual with 7-Day Free Trial$14.996 Months
- Annual with 15-Day Free Trial$19.991 Year









