# Open FM vs FM 81

The clearest difference is ads: Open FM at none against FM 81's shown. Open FM also leads on update cadence (every 2 months vs every 7 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Open FM ships an update every 2 months, FM 81 every 7 months. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Open FM | FM 81 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 7 months |
| Size | 73 MB | 87 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CLEMENT LABONNE](https://appshunter.io/developer/1650086469) | [100%Radio](https://appshunter.io/developer/1136591921) |

## What reviewers say

### Open FM

[App page](https://appshunter.io/ios/app/open-fm/id6717591146)

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

**In-app purchases:** none


### FM 81

[App page](https://appshunter.io/ios/app/fm-81/id6748903291)

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

**In-app purchases:** none


## Frequently asked questions

### Is Open FM free?

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

### Is FM 81 free?

FM 81 is free to download, with no in-app purchases.

### Do Open FM or FM 81 have ads?

FM 81 shows ads; Open FM does not.

### Which is updated more often, Open FM or FM 81?

Open FM ships an update every 2 months, and FM 81 every 7 months. Most recently, Open FM was updated on October 10, 2026 and FM 81 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.*