# Thermal P2 vs TopInfrared

The clearest difference is rating: TopInfrared at 3.5 against Thermal P2's 2.1. TopInfrared also leads on review sentiment (40% vs 11%). Thermal P2's advantage is in-app purchases (none vs 1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. TopInfrared sells 1 one-off in-app purchase. Thermal P2 asks for nothing beyond the download.

TopInfrared holds the better App Store score, 3.5 against 2.1. Both are backed by a comparable volume of ratings — 27 and 48 respectively. Written reviews point the same way: 11% of Thermal P2's written reviews are positive against 40% of TopInfrared's.

Thermal P2 ships an update fortnightly, TopInfrared every 3 weeks. The most recent releases landed on September 16, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Thermal P2 | TopInfrared |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.1 (27 ratings)](https://appshunter.io/ios/app/thermal-p2/id6446384113/reviews) | **[3.5 (48 ratings)](https://appshunter.io/ios/app/topinfrared/id6452017744/reviews)** |
| Number of ratings | 27 | **48** |
| Positive reviews | 10.7% of reviews | **39.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 19 MB | 518 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Raysen Microsystem Technology Co., Ltd.](https://appshunter.io/developer/1738384120) | [HK TOPDON TECHNOLOGY Co., LIMITED](https://appshunter.io/developer/1846276192) |

## What reviewers say

### Thermal P2

[App page](https://appshunter.io/ios/app/thermal-p2/id6446384113)

This professional thermal camera connects to your smartphone for plug-and-play temperature measurement. It's ideal for both personal and industrial use, from inspecting household utilities to diagnosing equipment issues.

**Highlights:** Ultra-small professional thermal camera, 12μm high-performance infrared detector, Self-developed ASIC chip, Compact size, lightweight, low power consumption, Plug-and-play smartphone connection, Accurate temperature measurement, Heat map analysis

**Features:** macOS Compatibility

**In-app purchases:** none


### TopInfrared

[App page](https://appshunter.io/ios/app/topinfrared/id6452017744)

This thermal imaging camera app provides high-resolution thermal images for precise temperature detection. It's ideal for inspecting insulation, examining electronics, and identifying heat loss with excellent accuracy and sensitivity.

**Highlights:** High-resolution thermal imaging (256x192), Precise temperature detection, Insulation inspection, Circuit board examination, High heat sensitivity (40mk), Low power consumption

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Features | $19.99 | one-time |


## Frequently asked questions

### Is Thermal P2 free?

Thermal P2 is free to download, with no in-app purchases.

### Is TopInfrared free?

TopInfrared is free to download, with in-app purchases available.

### Which has better reviews, Thermal P2 or TopInfrared?

TopInfrared is rated higher. Thermal P2 averages 2.1 out of 5 from 27 ratings, while TopInfrared averages 3.5 from 48 ratings.

### Do Thermal P2 or TopInfrared have ads?

Neither Thermal P2 nor TopInfrared shows ads.

### Which is updated more often, Thermal P2 or TopInfrared?

Thermal P2 ships an update fortnightly, and TopInfrared every 3 weeks. Most recently, Thermal P2 was updated on September 16, 2026 and TopInfrared on September 23, 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.*