# éCO2mix vs Source

The clearest difference is review sentiment: Source at 53% against éCO2mix's 33%. Source also leads on iOS requirement (13.4 vs 15.1). 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.

éCO2mix ships an update monthly, Source every 6 weeks. The most recent releases landed on September 24, 2026 and August 13, 2026 respectively.

## The numbers

| Metric | éCO2mix | Source |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/eco2mix-rte/id424593993/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 33.3% of reviews | **53.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free | Free |
| Size | 48 MB | 64 MB |
| Requires iOS | 15.1 | **13.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RTE Reseau de transport d'electricite](https://appshunter.io/developer/424593996) | [Bouygues Telecom](https://appshunter.io/developer/316348393) |

## What reviewers say

### éCO2mix

[App page](https://appshunter.io/ios/app/eco2mix-rte/id424593993)

This app provides real-time insights into the French electrical system, visualizing consumption trends, production sources, and greenhouse gas emissions. It aims to make complex energy data accessible to everyone, fostering better understanding and consumption habits.

**Highlights:** Visualize French electrical system data, Track consumption trends, Analyze production sources, Monitor greenhouse gas emissions, View regional data, Consult European market spot prices

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

**In-app purchases:** none


### Source

[App page](https://appshunter.io/ios/app/source/id1593228310)

This mobile service allows users to support charities with unused data. Users can manage their plan, purchase data top-ups, and convert leftover gigabytes into donations for causes like animal welfare, environment, and mutual aid. It also offers tips to optimize data usage and reduce carbon footprint.

**Highlights:** Support charities with unused data, Purchase data top-ups, Convert gigabytes to donations, Access client area, Refer friends for rewards, Optimize data consumption, Reduce carbon footprint

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is éCO2mix free?

éCO2mix is free to download, with no in-app purchases.

### Is Source free?

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

### Do éCO2mix or Source have ads?

Neither éCO2mix nor Source shows ads.

### Which is updated more often, éCO2mix or Source?

éCO2mix ships an update monthly, and Source every 6 weeks. Most recently, éCO2mix was updated on September 24, 2026 and Source on August 13, 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.*