# heatapp! vs DERUIZ

heatapp! and DERUIZ are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

heatapp! ships an update every 4 months, DERUIZ every 6 months. The most recent releases landed on October 2, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | heatapp! | DERUIZ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Size | 40 MB | 269 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EbV Elektronikbau- und Vertriebs-GmbH](https://appshunter.io/developer/892778635) | [Mosen E-commerce (Hangzhou) Co.,Ltd](https://appshunter.io/developer/1614611050) |

## What reviewers say

### heatapp!

[App page](https://appshunter.io/ios/app/heatapp/id892778632)

**Features:** macOS Compatibility

**In-app purchases:** none


### DERUIZ

[App page](https://appshunter.io/ios/app/deruiz/id1614611048)

**In-app purchases:** none


## Frequently asked questions

### Is heatapp! free?

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

### Is DERUIZ free?

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

### Do heatapp! or DERUIZ have ads?

Neither heatapp! nor DERUIZ shows ads.

### Which is updated more often, heatapp! or DERUIZ?

heatapp! ships an update every 4 months, and DERUIZ every 6 months. Most recently, heatapp! was updated on October 2, 2026 and DERUIZ on October 8, 2026.

---

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