SSIR vs iTherm
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
SSIR
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SSIR is connected to the rapid diagnosis instrument through the mobile phone WIFI, and can be used to quickly view the thermal imaging effect of the faulty PCBA with one click. It also supports frame temperature measurement, snapshot, switching pseudo-color and other functions to help users quickly locate the fault position of the motherboard.
iTherm
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This is a plug-and-play professional thermal imaging tool. Paired with a Type-C thermal camera, it instantly turns your phone into a thermal imager. The app features a clean, intuitive interface with zero learning curve. Real-time Infrared Imaging: Plug in and start immediately. Multiple built-in color palettes (Iron Red, Cool Color, High Contrast, etc.) help you clearly identify temperature distribution and hot spots from different perspectives. Precise Temperature Measurement: Supports spot/line temperature measurement, area temperature measurement, and automatic high/low temperature tracking, with real-time temperature readings displayed on screen. One-Tap Snapshot: Spot an abnormal temperature point? Just tap to save an infrared image that retains full temperature data for later analysis and comparison. HD Video Recording: Supports infrared video recording to dynamically capture temperature changes over timeβideal for equipment inspection, outdoor exploration, or electrical maintenance scenarios.
Screenshots
Verdict
The clearest difference is update cadence: SSIR at every 5 days against iTherm's every 6 weeks. SSIR also leads on iOS requirement (11.0 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SSIR ships an update every 5 days, iTherm every 6 weeks. The most recent releases landed on September 11, 2026 and September 19, 2026 respectively.
| Parameter | SSIR | iTherm |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days β better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 11.0 β better | 14.0 |
| Further details β not scored | ||
| Size | 11 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Guangzhou Xinxun Chuangtou Technology Co., Ltd. | Guangdong Laureii Intelligent Technology Co.,Ltd |
In-app purchases
SSIR
No in-app purchases
iTherm
No in-app purchases









