# MaxwellsDemon vs CloudLabs Kepler's Laws

The clearest difference is price: CloudLabs Kepler's Laws at Free against MaxwellsDemon's $0.99. CloudLabs Kepler's Laws also leads on iOS requirement (9.0 vs 14.4). On ads, in-app purchases and device support there is nothing between them.

CloudLabs Kepler's Laws is free to download; MaxwellsDemon costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | MaxwellsDemon | CloudLabs Kepler's Laws |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | — |
| Size | 1 MB | 101 MB |
| Requires iOS | 14.4 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Takao Akatsu](https://appshunter.io/developer/1530946331) | [Jiovany Orozco](https://appshunter.io/developer/1114670847) |

## What reviewers say

### MaxwellsDemon

[App page](https://appshunter.io/ios/app/maxwellsdemon/id1612817641)

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

**In-app purchases:** none


### CloudLabs Kepler's Laws

[App page](https://appshunter.io/ios/app/cloudlabs-keplers-laws/id1636764440)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MaxwellsDemon free?

MaxwellsDemon costs $0.99, with no in-app purchases.

### Is CloudLabs Kepler's Laws free?

CloudLabs Kepler's Laws is free to download, with no in-app purchases.

### Do MaxwellsDemon or CloudLabs Kepler's Laws have ads?

Neither MaxwellsDemon nor CloudLabs Kepler's Laws shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*