# IR master vs Temp Master

The clearest difference is rating: IR master at 3.7 against Temp Master's 3.2. Temp Master's advantage is review sentiment (40% vs 27%) and update cadence (every 5 weeks vs every 3 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

IR master holds the better App Store score, 3.7 against 3.2. Both are backed by a comparable volume of ratings — 3 and 12 respectively. Written reviews complicate that: 27% of IR master's written reviews are positive against 40% of Temp Master's, so the app with the better star average is not the one people write more warmly about.

IR master ships an update every 3 months, Temp Master every 5 weeks. The most recent releases landed on July 7, 2026 and August 9, 2026 respectively.

## The numbers

| Metric | IR master | Temp Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/ir-master/id1614218116/reviews)** | [3.2 (12 ratings)](https://appshunter.io/ios/app/temp-master/id6737321665/reviews) |
| Number of ratings | 3 | **12** |
| Positive reviews | 26.7% of reviews | **40.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 77 MB | 43 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [InfiRay Technologies Co.,Ltd.](https://appshunter.io/developer/1516230719) | [Thermal Master Technology Co.,Ltd.](https://appshunter.io/developer/1770222118) |

## What reviewers say

### IR master

[App page](https://appshunter.io/ios/app/ir-master/id1614218116)

This application transforms your smartphone into a high-resolution infrared thermal imager. It offers detailed temperature data output for various applications, from industrial inspections to personal health monitoring.

**Highlights:** High-resolution infrared thermal imaging, Real-time temperature data output, Wide range of application directions, Consumer-level infrared thermography, Night vision capabilities

**Features:** macOS Compatibility

**In-app purchases:** none


### Temp Master

[App page](https://appshunter.io/ios/app/temp-master/id6737321665)

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.

**Highlights:** High-accuracy temperature detection, Enhanced infrared resolution, Offline data viewing and export, Up to 15x digital zoom, Reduced background noise, Long battery life optimization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IR master free?

IR master is free to download, with no in-app purchases.

### Is Temp Master free?

Temp Master is free to download, with no in-app purchases.

### Which has better reviews, IR master or Temp Master?

IR master is rated higher. IR master averages 3.7 out of 5 from 3 ratings, while Temp Master averages 3.2 from 12 ratings.

### Do IR master or Temp Master have ads?

Neither IR master nor Temp Master shows ads.

### Which is updated more often, IR master or Temp Master?

IR master ships an update every 3 months, and Temp Master every 5 weeks. Most recently, IR master was updated on July 7, 2026 and Temp Master on August 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*