Comparison

tempConvert vs LensTrace

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Instant temperature conversion
  • Fahrenheit to Celsius and vice versa
  • Offline functionality
  • Animated thermometer
  • Contextual labels
  • Dark mode support
Features
Read 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.

About

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.

Highlights
  • EXIF camera data watermarks
  • Custom text watermarks
  • Photo borders and frames
  • Batch import and export
  • Local photo processing
  • Custom font support
Read 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

tempConvert4 screens
LensTrace3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. LensTrace sells 2 one-off in-app purchases. tempConvert asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
tempConvert versus LensTrace: the parameters behind the verdict, then further details
ParametertempConvertLensTrace
PriceFreeFree
Rating5.0 (2 ratings)5.0 (1 ratings)
Positive reviews88.9% of reviews—
Number of ratings2 — better1
Update frequencyEvery 2 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS16.0 — better17.0
Further details — not scored
Size1 MB36 MB
Age rating4+4+
DeveloperGreg Anderson宁 李

Customer experience

tempConvert

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive88.9%
Neutral11.1%
Negative0.0%

LensTrace

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

tempConvert

No in-app purchases

2 purchases

LensTrace

One-time2
  • 7-day TrialFree
  • Lifetime Unlock$0.99

Questions

Is tempConvert free?
tempConvert is free to download, with no in-app purchases.
Is LensTrace free?
LensTrace is free to download, with in-app purchases available.
Which has better reviews, tempConvert or LensTrace?
tempConvert and LensTrace are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do tempConvert or LensTrace have ads?
Neither tempConvert nor LensTrace shows ads.
Which is updated more often, tempConvert or LensTrace?
tempConvert ships an update every 2 months, and LensTrace every 10 days. Most recently, tempConvert was updated on September 19, 2026 and LensTrace on September 26, 2026.

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