# happ vs Stonn

The clearest difference is update cadence: Stonn at every 3 weeks against happ's every 4 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.

happ ships an update every 4 months, Stonn every 3 weeks. The most recent releases landed on October 17, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | happ | Stonn |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 3.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 63 MB | 183 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ENGIE](https://appshunter.io/developer/435501932) | [Gregoire Deshusses](https://appshunter.io/developer/1647337922) |

## What reviewers say

### happ

[App page](https://appshunter.io/ios/app/happ-e-by-engie/id1545612133)

Track your electricity and natural gas consumption, view bills, make payments, and manage your energy contract. This app provides essential information for monitoring your energy usage.

**Highlights:** Track electricity and gas consumption, View bills, Make payments, Manage contract, Monitor energy usage

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

**In-app purchases:** none


### Stonn

[App page](https://appshunter.io/ios/app/stonn/id6755889521)

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

**In-app purchases:** none


## Frequently asked questions

### Is happ free?

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

### Is Stonn free?

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

### Do happ or Stonn have ads?

Neither happ nor Stonn shows ads.

### Which is updated more often, happ or Stonn?

happ ships an update every 4 months, and Stonn every 3 weeks. Most recently, happ was updated on October 17, 2026 and Stonn on October 2, 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.*