# iSystem vs MoodCycle AI

The clearest difference is price: iSystem at Free against MoodCycle AI's $2.99. iSystem also leads on iOS requirement (14.0 vs 17). MoodCycle AI's advantage is device support. On in-app purchases there is nothing between them.

iSystem is free to download; MoodCycle AI costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | iSystem | MoodCycle AI |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | No | No |
| Ads | — | No |
| Size | 2 MB | 2 MB |
| Requires iOS | **14.0** | 17 |
| Devices | — | **iPhone, iPad** |
| Age rating | 17+ | 9+ |
| Developer | [Zack Smith](https://appshunter.io/developer/388860537) | [贺 周](https://appshunter.io/developer/1815397078) |

## What reviewers say

### iSystem

[App page](https://appshunter.io/ios/app/isystem/id454947443)

**In-app purchases:** none


### MoodCycle AI

[App page](https://appshunter.io/ios/app/moodcycle-ai/id6762590774)

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

**In-app purchases:** none


## Frequently asked questions

### Is iSystem free?

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

### Is MoodCycle AI free?

MoodCycle AI costs $2.99, with no in-app purchases.

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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.*