# ENGIE Smart App vs Merle

The clearest difference is update cadence: Merle at weekly against ENGIE Smart App's monthly. ENGIE Smart App's advantage is iOS requirement (15.0 vs 17.0). 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.

ENGIE Smart App ships an update monthly, Merle weekly. The most recent releases landed on November 7, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | ENGIE Smart App | Merle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (47 ratings)](https://appshunter.io/ios/app/engie-smart-app/id1562119194/reviews)** | — |
| Number of ratings | **47** | — |
| Positive reviews | 21.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free | — |
| Size | 131 MB | 14 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Electrabel](https://appshunter.io/developer/426917654) | [Mosa Data Engineering](https://appshunter.io/developer/1847837363) |

## What reviewers say

### ENGIE Smart App

[App page](https://appshunter.io/ios/app/engie-smart-app/id1562119194)

Monitor your electricity and gas consumption and costs in real-time. Track your solar panel energy generation and earnings. Receive alerts if your advance payments need adjustment based on actual usage.

**Highlights:** Real-time energy consumption tracking, Cost monitoring, Solar panel generation insights, Advance payment adjustment alerts, Energy saving performance feedback

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

**In-app purchases:** none


### Merle

[App page](https://appshunter.io/ios/app/merle/id6762002283)

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

**In-app purchases:** none


## Frequently asked questions

### Is ENGIE Smart App free?

ENGIE Smart App is free to download, with no in-app purchases.

### Is Merle free?

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

### Do ENGIE Smart App or Merle have ads?

Neither ENGIE Smart App nor Merle shows ads.

### Which is updated more often, ENGIE Smart App or Merle?

ENGIE Smart App ships an update monthly, and Merle weekly. Most recently, ENGIE Smart App was updated on November 7, 2026 and Merle on October 28, 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.*