# Thermomètre.fr vs Ondeo

The clearest difference is in-app purchases: Thermomètre.fr at none against Ondeo's 1. Thermomètre.fr also leads on iOS requirement (15.6 vs 26.0). Ondeo's advantage is update cadence (fortnightly vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. Ondeo sells 1 one-off in-app purchase. Thermomètre.fr asks for nothing beyond the download.

Thermomètre.fr ships an update every 5 months, Ondeo fortnightly. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Thermomètre.fr | Ondeo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Size | 73 MB | 6 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [ALPHABI SOLUTIONS PRIVATE LIMITED](https://appshunter.io/developer/1711012265) | [Eloi Carrelet](https://appshunter.io/developer/1877062509) |

## What reviewers say

### Thermomètre.fr

[App page](https://appshunter.io/ios/app/thermometrefr/id6474127255)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Ondeo

[App page](https://appshunter.io/ios/app/ondeo/id6760950480)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ondeo Premium | $9.99 | one-time |


## Frequently asked questions

### Is Thermomètre.fr free?

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

### Is Ondeo free?

Ondeo is free to download, with in-app purchases available.

### Do Thermomètre.fr or Ondeo have ads?

Neither Thermomètre.fr nor Ondeo shows ads.

### Which is updated more often, Thermomètre.fr or Ondeo?

Thermomètre.fr ships an update every 5 months, and Ondeo fortnightly. Most recently, Thermomètre.fr was updated on October 6, 2026 and Ondeo on October 14, 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.*