# D.PAY vs IR Heat Map

The clearest difference is update cadence: IR Heat Map at every 5 weeks against D.PAY's every 18 months. On price, ads, in-app purchases and device support there is nothing between them.

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

D.PAY ships an update every 18 months, IR Heat Map every 5 weeks. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | D.PAY | IR Heat Map |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/ir-heat-map/id6740187644/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 5 weeks** |
| Monetization | — | Free |
| Size | 35 MB | 71 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [DIGITAL PAY SOLUTIONS LIMITED](https://appshunter.io/developer/1696272352) | [永强 陈](https://appshunter.io/developer/1771010405) |

## What reviewers say

### D.PAY

[App page](https://appshunter.io/ios/app/dpay/id6451042137)

**Features:** macOS Compatibility

**In-app purchases:** none


### IR Heat Map

[App page](https://appshunter.io/ios/app/ir-heat-map/id6740187644)

This thermal imager app integrates temperature measurement and imaging, offering a wide range from -20 to 550℃. It supports wireless screen projection and real-time analysis for various applications like HVAC, electrical maintenance, and equipment inspection.

**Highlights:** Temperature measurement (-20 to 550℃), Infrared thermal imaging, Wireless screen projection, Real-time analysis, Ease of use, Image observation via APP

**In-app purchases:** none


## Frequently asked questions

### Is D.PAY free?

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

### Is IR Heat Map free?

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

### Do D.PAY or IR Heat Map have ads?

Neither D.PAY nor IR Heat Map shows ads.

### Which is updated more often, D.PAY or IR Heat Map?

D.PAY ships an update every 18 months, and IR Heat Map every 5 weeks. Most recently, D.PAY was updated on October 3, 2026 and IR Heat Map on October 5, 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.*