Comparison

Thermal Link vs Thermal Pro

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

Head to head
About

Thermal Link

Features
Read full description

The Thermal Link APP is applied to UNI-T's thermal imagers such as X、B、E、V、G and H series. After installing this APP on mobile phones, users can connect it to a thermal imager via Wi-Fi for communication, and use the tools provided by the APP to perform functions such as temperature analysis on the image.

About

Thermal Pro

This portable thermal imager converts object heat radiation into images and temperature data. It offers high-resolution thermal imaging, real-time temperature measurement, and various display modes. Users can record videos, set alarms, and generate detailed analysis reports.

Highlights
  • 256x192 pixel infrared resolution
  • Real-time high-definition thermal imaging
  • Temperature range -20℃ to 550℃
  • Thermal imaging, fusion, and picture-in-picture modes
  • Real-time temperature sound/light alarms
  • Temperature measurement analysis reports
  • Video recording and playback
Features
Read full description

The mobile phone thermal imager is a portable thermal imaging product of long-wave infrared (8~14μm, LWIR), which can convert the thermal radiation of the measured object into images and temperature data. Main functions: 1. Supports ultra-high infrared resolution of 256X192 pixels, and displays thermal images in real time and high definition through 25Hz high frame rate. 2. Supports measurement of the full temperature range of -20℃~550℃ (-4℉~1022℉), and can accurately detect temperature changes of 0.1℃(32.18℉). 3. Supports real-time image photography and video recording, and can set the maximum\minimum\center temperature value display of point, line, and surface areas at any position on the image. 4. Supports thermal imaging\fusion\picture-in-picture mode switching, combining infrared images and visible light images. 5. Supports real-time temperature sound/light alarm, and can customize high or low temperature alarm values ​​and alarm modes. 6. Support real-time temperature waveform monitoring, you can set points, lines, and surface areas at any position on the image for temperature monitoring, automatically save temperature monitoring videos, support video playback and excel table data export. 7. Support the generation of temperature measurement analysis reports, you can select any photo in the album to generate a PDF report, and support PDF report sharing.

Screenshots

Thermal Link3 screens
Thermal Pro4 screens

Verdict

The call

Thermal Link and Thermal Pro are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Thermal Link ships an update every 3 months, Thermal Pro every 4 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

ScorecardNo meaningful differences
Thermal Link versus Thermal Pro: the parameters behind the verdict, then further details
ParameterThermal LinkThermal Pro
PriceFreeFree
Rating—1.0 (1 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 3 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPod
Requires iOS11.0 — better12.0
Further details — not scored
Size58 MB28 MB
Age rating4+4+
DeveloperUNI-TREND TECHNOLOGY (CHINA) CO.,LTD.Shenzhen Leagend Optoelectronics Co., Ltd.

In-app purchases

None

Thermal Link

No in-app purchases

None

Thermal Pro

No in-app purchases

Questions

Is Thermal Link free?
Thermal Link is free to download, with no in-app purchases.
Is Thermal Pro free?
Thermal Pro is free to download, with no in-app purchases.
Do Thermal Link or Thermal Pro have ads?
Neither Thermal Link nor Thermal Pro shows ads.
Which is updated more often, Thermal Link or Thermal Pro?
Thermal Link ships an update every 3 months, and Thermal Pro every 4 months. Most recently, Thermal Link was updated on October 27, 2026 and Thermal Pro on October 24, 2026.

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