# Opaline FM vs ThunderBeast

The clearest difference is in-app purchases: Opaline FM at none against ThunderBeast's 1. Opaline FM also leads on update cadence (every 6 days vs every 2 weeks). ThunderBeast's advantage is device support (4 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. ThunderBeast sells 1 one-off in-app purchase. Opaline FM asks for nothing beyond the download.

Opaline FM ships an update every 6 days, ThunderBeast every 2 weeks. The most recent releases landed on October 4, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Opaline FM | ThunderBeast |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Size | 3 MB | 63 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Hideki Konishi](https://appshunter.io/developer/6790603370) | [Tomocreate, Inc.](https://appshunter.io/developer/1895224165) |

## What reviewers say

### Opaline FM

[App page](https://appshunter.io/ios/app/opaline-fm/id6790603368)

**In-app purchases:** none


### ThunderBeast

[App page](https://appshunter.io/ios/app/thunderbeast/id6803942479)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ThunderBeast Pro | $9.99 | one-time |


## Frequently asked questions

### Is Opaline FM free?

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

### Is ThunderBeast free?

ThunderBeast is free to download, with in-app purchases available.

### Do Opaline FM or ThunderBeast have ads?

Neither Opaline FM nor ThunderBeast shows ads.

### Which is updated more often, Opaline FM or ThunderBeast?

Opaline FM ships an update every 6 days, and ThunderBeast every 2 weeks. Most recently, Opaline FM was updated on October 4, 2026 and ThunderBeast on September 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.*