# Sub FM vs FlexFM  Radio

The clearest difference is iOS requirement: Sub FM at 8.0 against FlexFM  Radio's 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.

Sub FM ships an update every 6 months, FlexFM  Radio every 5 months. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sub FM | FlexFM  Radio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/sub-fm/id431510233/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 months** |
| Monetization | Free | — |
| Size | 4 MB | 34 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Phil Greenway](https://appshunter.io/developer/321492275) | [carl shepherd](https://appshunter.io/developer/1867790414) |

## What reviewers say

### Sub FM

[App page](https://appshunter.io/ios/app/sub-fm/id431510233)

Stream live electronic music, including Dubstep and Future Garage, from a long-standing online radio station. Engage with the community through forums and chatrooms, and enjoy features like auto-play and robust connections.

**Highlights:** Live streaming radio, Dubstep and Future Garage focus, Auto Play, Connection Robustness, Community Forum, Chatroom access

**Features:** macOS Compatibility

**In-app purchases:** none


### FlexFM  Radio

[App page](https://appshunter.io/ios/app/flexfm-radio/id6768991026)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sub FM free?

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

### Is FlexFM  Radio free?

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

### Do Sub FM or FlexFM  Radio have ads?

Neither Sub FM nor FlexFM  Radio shows ads.

### Which is updated more often, Sub FM or FlexFM  Radio?

Sub FM ships an update every 6 months, and FlexFM  Radio every 5 months. Most recently, Sub FM was updated on November 1, 2026 and FlexFM  Radio on October 31, 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.*