Temp Master vs FNIRSI+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Temp Master
This utility app enhances thermal imaging capabilities for compatible Thermal Master devices, offering precise temperature detection and advanced image analysis. It allows users to view, save, and export thermal data offline, with features like digital zoom and improved resolution for various inspection tasks.
- High-accuracy temperature detection
- Enhanced infrared resolution
- Offline data viewing and export
- Up to 15x digital zoom
- Reduced background noise
- Long battery life optimization
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Temp Master This app is exclusively compatible with the following Thermal Master devices: P1 / P2 Pro / P3. Thermal Master offers two main series of thermal imaging devices—Temp Master (traditional smartphone thermal cameras) and Thermal Master (thermal monoculars)—covering a wide range of use cases from home temperature monitoring and industrial inspections to long-range (up to 1500 meters) outdoor night vision. What's new in this version: Resolved compatibility issues with the X³ super-resolution algorithm on some models. Now fully supports enhanced infrared resolution of 512×384. P2 now supports high-accuracy temperature detection within ±2.7℉ (±1.5℃). With an upgraded IQ+ precision algorithm, temperature readings for HVAC systems, electrical circuits, PCB diagnostics, and automotive inspections are now even more reliable. The P2 pioneered ultra-low power consumption in thermal imaging—just 0.3W. We've further optimized the algorithm, battery life can now reach 5–7 hours or more. Upgraded professional data analysis software: view, save, and export images and temperature data even offline. Enhanced the Razor X image algorithm, reducing background noise by approximately 20% and achieving a frame rate of 25Hz, ensuring smooth performance even during fast movements. All Thermal Master devices now support up to 15x digital zoom for pinpoint accuracy when locating faults. As a global leader in smartphone thermal imaging, Thermal Master is committed to creating smarter and sharper thermal cameras. We hold the largest number of smartphone thermal imaging patents worldwide and offer lifetime free software updates for all products.
FNIRSI+
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The equipment control App developed by Shenzhen Finiris Technology Co., Ltd.
Screenshots
Verdict
The clearest difference is iOS requirement: Temp Master at 11.0 against FNIRSI+'s 13.0. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Temp Master ships an update every 5 weeks, FNIRSI+ every 4 weeks. The most recent releases landed on August 9, 2026 and September 14, 2026 respectively.
| Parameter | Temp Master | FNIRSI+ |
|---|---|---|
| Price | Free | Free |
| Rating | 3.2 (12 ratings) — better | — |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 5 weeks | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 43 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Thermal Master Technology Co.,Ltd. | Shenzhen FNIRSI Technology Co., Ltd. |
In-app purchases
Temp Master
No in-app purchases
FNIRSI+
No in-app purchases
