# atom.sim vs CloudLabs Methane Synthesis

The clearest difference is update cadence: atom.sim at every 7 months against CloudLabs Methane Synthesis's every 28 months. CloudLabs Methane Synthesis's advantage is iOS requirement (9.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

atom.sim ships an update every 7 months, CloudLabs Methane Synthesis every 28 months. Both last shipped on October 11, 2026.

## The numbers

| Metric | atom.sim | CloudLabs Methane Synthesis |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 28 months |
| Size | 78 MB | 86 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hans Kovi](https://appshunter.io/developer/1493527465) | [Jiovany Orozco](https://appshunter.io/developer/1114670847) |

## What reviewers say

### atom.sim

[App page](https://appshunter.io/ios/app/atomsim/id1493527466)

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

**In-app purchases:** none


### CloudLabs Methane Synthesis

[App page](https://appshunter.io/ios/app/cloudlabs-methane-synthesis/id1596478330)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is atom.sim free?

atom.sim is free to download, with no in-app purchases.

### Is CloudLabs Methane Synthesis free?

CloudLabs Methane Synthesis is free to download, with no in-app purchases.

### Do atom.sim or CloudLabs Methane Synthesis have ads?

Neither atom.sim nor CloudLabs Methane Synthesis shows ads.

### Which is updated more often, atom.sim or CloudLabs Methane Synthesis?

atom.sim ships an update every 7 months, and CloudLabs Methane Synthesis every 28 months. Most recently, atom.sim was updated on October 11, 2026 and CloudLabs Methane Synthesis 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.*