# RockSpin vs RadTeamSim.Meter

The clearest difference is in-app purchases: RadTeamSim.Meter at none against RockSpin's 3. RadTeamSim.Meter also leads on iOS requirement (13.0 vs 16.0). RockSpin's advantage is update cadence (every 2 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. RockSpin sells 3 in-app purchases, starting at $9.99 per month. RadTeamSim.Meter asks for nothing beyond the download.

RockSpin ships an update every 2 days, RadTeamSim.Meter monthly. The most recent releases landed on October 4, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | RockSpin | RadTeamSim.Meter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Monthly |
| Size | 81 MB | 107 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [WOOHYUN JEON](https://appshunter.io/developer/1823158371) | [Radiation Emergency Services LLC](https://appshunter.io/developer/1639000868) |

## What reviewers say

### RockSpin

[App page](https://appshunter.io/ios/app/rockspin/id6747876962)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $9.99 | per month |
| Pro Yearly | $99.99 | per year |
| 1,000 Credits | $14.99 | one-time |


### RadTeamSim.Meter

[App page](https://appshunter.io/ios/app/radteamsimmeter/id6759922183)

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

**In-app purchases:** none


## Frequently asked questions

### Is RockSpin free?

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

### Is RadTeamSim.Meter free?

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

### Do RockSpin or RadTeamSim.Meter have ads?

Neither RockSpin nor RadTeamSim.Meter shows ads.

### Which is updated more often, RockSpin or RadTeamSim.Meter?

RockSpin ships an update every 2 days, and RadTeamSim.Meter monthly. Most recently, RockSpin was updated on October 4, 2026 and RadTeamSim.Meter on October 19, 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.*