Off Lens vs Tone Wave
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.
Tone Wave
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Tone Wave - is a powerful yet user-friendly audio testing tool that allows you to generate, explore, and analyze sound frequencies with high precision. Frequency Generator Create accurate sound frequencies in real time. - Smooth and precise frequency control - Wide frequency range (Hz) - Perfect for speaker testing, audio experiments, and calibration Stereo Test Check left and right audio channels independently. - Test left and right speakers separately - Auto loop mode for continuous testing - Ideal for headphone and speaker diagnostics Noise Meter Monitor ambient noise instantly. - Real-time dB level tracking - Minimum, maximum, and average values - Great for measuring room noise and sound environments Premium subscription: • Ad-free experience • Regular feature updates • Enhanced audio performance Subscription: Payment will be charged to iTunes Account at confirmation of purchase. Subscription with a free trial period will automatically renew to a paid subscription. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Account will be charged for renewal within 24 hours prior to the end of the current period at the rate of the selected plan. Subscriptions and auto-renewal may be managed by going to Account Settings after purchase. You can cancel your subscription or free trial in the iTunes settings at least 24-hours before the end of the free trial period. The cancellation will take effect the day after the last day of the current subscription period and you will be downgraded to the free service. Subscription options: - Weekly Price: $ 5.99 - Annual $ 49.99 For other currencies, the price corresponds to the same tier on the App Store Pricing Matrix. Privacy Policy: https://sites.google.com/view/tonewawe/privacy Terms of Use: https://sites.google.com/view/tonewawe/terms EULA- https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Off Lens at none against Tone Wave's 2. Off Lens also leads on ads (none vs shown). On price, 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. Tone Wave sells 2 in-app purchases, starting at $5.99 per 7 days. Off Lens asks for nothing beyond the download.
| Parameter | Off Lens | Tone Wave |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 | 18.0 |
| Further details — not scored | ||
| Size | 3 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Feiyun Technology Ltd. | Vladimir Gerlak |
In-app purchases
Off Lens
No in-app purchases
Tone Wave
- Tone Wave - Weekly$5.997 Days
- Tone Wave - Annual3 Days trial$49.991 Year





