# NNPO vs IR master

The clearest difference is rating: IR master at 2.6 against NNPO's 2.0. IR master also leads on review sentiment (13% vs 0%). On price, ratings volume, update cadence and ads 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, 2.6 against 2.0. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews point the same way: 0% of NNPO's written reviews are positive against 13% of IR master's.

NNPO ships an update every 2 months, IR master every 3 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | NNPO | IR master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (2 ratings)](https://appshunter.io/ios/app/nnpo/id1570390251/reviews) | **[2.6 (5 ratings)](https://appshunter.io/ios/app/ir-master/id1614218116/reviews)** |
| Number of ratings | 2 | **5** |
| Positive reviews | 0.0% of reviews | **12.9% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 27 MB | 77 MB |
| Requires iOS | 14.2 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Shenzhen NNPO Technology Co.,Ltd](https://appshunter.io/developer/1570390253) | [InfiRay Technologies Co.,Ltd.](https://appshunter.io/developer/1516230719) |

## What reviewers say

### NNPO

[App page](https://appshunter.io/ios/app/nnpo/id1570390251)

This app provides advanced thermal imaging and infrared night vision capabilities for your device. It allows users to view and capture thermal data, enhancing visibility in low-light conditions.

**Highlights:** Thermal image scope, IR night vision, Low-light visibility enhancement, Capture thermal data

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is NNPO free?

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

### Is IR master free?

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

### Which has better reviews, NNPO or IR master?

IR master is rated higher. NNPO averages 2.0 out of 5 from 2 ratings, while IR master averages 2.6 from 5 ratings.

### Do NNPO or IR master have ads?

Neither NNPO nor IR master shows ads.

### Which is updated more often, NNPO or IR master?

NNPO ships an update every 2 months, and IR master every 3 months. Most recently, NNPO was updated on October 24, 2026 and IR master on October 27, 2026.

---

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