# HIM Appen vs Heat

The clearest difference is update cadence: Heat at every 11 days against HIM Appen's every 6 weeks. 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.

HIM Appen ships an update every 6 weeks, Heat every 11 days. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | HIM Appen | Heat |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 11 days** |
| Size | 46 MB | 106 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [VSP AS](https://appshunter.io/developer/1494717191) | [OJ ELECTRONICS AS](https://appshunter.io/developer/1326069502) |

## What reviewers say

### HIM Appen

[App page](https://appshunter.io/ios/app/him-appen/id6754094044)

**Features:** macOS Compatibility

**In-app purchases:** none


### Heat

[App page](https://appshunter.io/ios/app/heat-microtemp/id6762533477)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is HIM Appen free?

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

### Is Heat free?

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

### Do HIM Appen or Heat have ads?

Neither HIM Appen nor Heat shows ads.

### Which is updated more often, HIM Appen or Heat?

HIM Appen ships an update every 6 weeks, and Heat every 11 days. Most recently, HIM Appen was updated on November 9, 2026 and Heat on November 5, 2026.

---

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