# echOpen ON vs CMGF 2023

The clearest difference is iOS requirement: CMGF 2023 at 12.0 against echOpen ON's 17.0. 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.

echOpen ON ships an update every 4 months, CMGF 2023 every 2 months. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | echOpen ON | CMGF 2023 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 67 MB | 71 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [echopen factory](https://appshunter.io/developer/1530808488) | [CYIM](https://appshunter.io/developer/394180060) |

## What reviewers say

### echOpen ON

[App page](https://appshunter.io/ios/app/echopen-on/id1664469384)

**In-app purchases:** none


### CMGF 2023

[App page](https://appshunter.io/ios/app/cmgf-2023/id1672612177)

**In-app purchases:** none


## Frequently asked questions

### Is echOpen ON free?

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

### Is CMGF 2023 free?

CMGF 2023 is free to download, with no in-app purchases.

### Do echOpen ON or CMGF 2023 have ads?

Neither echOpen ON nor CMGF 2023 shows ads.

### Which is updated more often, echOpen ON or CMGF 2023?

echOpen ON ships an update every 4 months, and CMGF 2023 every 2 months. Most recently, echOpen ON was updated on October 16, 2026 and CMGF 2023 on October 11, 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.*