tempConvert vs LensTrace
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
tempConvert
Quickly convert temperatures between Fahrenheit and Celsius with instant results. This ad-free utility works offline, offering animated visuals and contextual labels for easy understanding. It supports negative temperatures and includes reference points for common scenarios.
- Instant temperature conversion
- Fahrenheit to Celsius and vice versa
- Offline functionality
- Animated thermometer
- Contextual labels
- Dark mode support
Read full descriptionHide full description
tempConvert is the fastest way to convert between Fahrenheit and Celsius — no ads, no clutter, no internet required. Just type a temperature and get an instant result. Whether you're traveling abroad, cooking, checking a weather forecast, or following a scientific formula, tempConvert gives you the answer in under a second. FEATURES Instant conversion — results update as you type Fahrenheit to Celsius and Celsius to Fahrenheit Negative temperature support for sub-zero values Animated thermometer that reflects current temperature Contextual labels so you know what the number actually feels like Works completely offline — no data collection, ever Full dark mode support Supports iPhone and iPad REFERENCE TEMPERATURES INCLUDED Water boils: 212°F / 100°C Body temperature: 98.6°F / 37°C Room temperature: 72°F / 22.2°C Water freezes: 32°F / 0°C Absolute zero: -459.67°F / -273.15°C THE FORMULAS °F to °C: subtract 32, multiply by 5, divide by 9 °C to °F: multiply by 9, divide by 5, add 32 tempConvert is simple by design. Open it, type a number, get your answer.
LensTrace
Enhance your photos with EXIF data and custom text watermarks. Add elegant frames and borders, with batch processing for efficient editing. Local processing ensures your data stays on your device.
- EXIF camera data watermarks
- Custom text watermarks
- Photo borders and frames
- Batch import and export
- Local photo processing
- Custom font support
Read full descriptionHide full description
LensTrace is a local photo watermark and border creation tool for photographers, travelers, creators, and anyone who wants to share photos with clean EXIF information. Import your photos, read EXIF metadata, and create elegant photo frames with camera model, lens, aperture, shutter speed, ISO, focal length, date, and custom text. The app supports batch import and batch export, helping you create a consistent look for multiple photos with less effort. Key features: - EXIF camera watermarks Automatically read camera model, lens information, aperture, shutter speed, ISO, focal length, and date from your photos, then display them in a clean layout. - Photo borders and frames The app calculates a suitable border based on the original photo ratio and watermark content. You can also adjust corner radius, shadow, and background style. - Custom text watermark Add your own text for travel notes, captions, dates, project names, or personal signatures. - Fonts and style Choose from system fonts or import your own font files for watermark rendering. Adjust font size and text stroke to keep watermarks readable on different photos. - Batch workflow Import multiple photos, select the photos you want, and export them together. - Export options Export to common image formats with adjustable quality and size settings. - Local processing Photos, EXIF data, fonts, watermark rendering, and exported files are processed locally on your device by default and are not uploaded to the developer's server. Use it to: - Add camera settings to photography works - Create clean borders for travel photos - Share photos with EXIF information - Batch export photos for social platforms - Make simple and polished photo presentation images Trial and purchase: You can import, edit, and preview photos for free. Export features are available with a 7-day free trial. The trial does not automatically charge after it ends. To continue exporting after the trial, you can purchase a one-time lifetime unlock.
Screenshots
Verdict
The clearest difference is in-app purchases: tempConvert at none against LensTrace's 2. LensTrace's advantage is update cadence (every 10 days vs every 2 months). On price, rating, ratings volume and ads 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. LensTrace sells 2 one-off in-app purchases. tempConvert asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for tempConvert against 5.0 for LensTrace. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
tempConvert ships an update every 2 months, LensTrace every 10 days. The most recent releases landed on September 19, 2026 and September 26, 2026 respectively.
| Parameter | tempConvert | LensTrace |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Positive reviews | 88.9% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 2 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 1 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Greg Anderson | 宁 李 |
Customer experience
tempConvert
LensTrace
In-app purchases
tempConvert
No in-app purchases
LensTrace
- 7-day TrialFree
- Lifetime Unlock$0.99









