# ThermoTool vs Program Heat Stress®

The clearest difference is iOS requirement: Program Heat Stress® at 8.0 against ThermoTool's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

ThermoTool ships an update every 5 months, Program Heat Stress® every 6 months. The most recent releases landed on September 28, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | ThermoTool | Program Heat Stress® |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 6 months |
| Size | 39 MB | 5 MB |
| Requires iOS | 13.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CONSEILS ET COMPETENCES EN PRODUCTIONS ANIMALE](https://appshunter.io/developer/981585160) | [SOCIETE INDUSTRIELLE LESAFFRE](https://appshunter.io/developer/1284863866) |

## What reviewers say

### ThermoTool

[App page](https://appshunter.io/ios/app/thermotool/id981585161)

**Features:** macOS Compatibility

**In-app purchases:** none


### Program Heat Stress®

[App page](https://appshunter.io/ios/app/program-heat-stress/id993601879)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ThermoTool free?

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

### Is Program Heat Stress® free?

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

### Do ThermoTool or Program Heat Stress® have ads?

Neither ThermoTool nor Program Heat Stress® shows ads.

### Which is updated more often, ThermoTool or Program Heat Stress®?

ThermoTool ships an update every 5 months, and Program Heat Stress® every 6 months. Most recently, ThermoTool was updated on September 28, 2026 and Program Heat Stress® on September 30, 2026.

---

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