# Enigma LC vs Cat CPU System

The clearest difference is in-app purchases: Cat CPU System at none against Enigma LC's 1. Cat CPU System also leads on update cadence (weekly vs every 20 months). Enigma LC's advantage is iOS requirement (9.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Enigma LC sells 1 one-off in-app purchase. Cat CPU System asks for nothing beyond the download.

Enigma LC ships an update every 20 months, Cat CPU System weekly. The most recent releases landed on September 29, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Enigma LC | Cat CPU System |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 20 months | **Weekly** |
| Size | 3 MB | 39 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DILTS JAPAN, LIMITED LIABILITY CO.](https://appshunter.io/developer/780416956) | [Brook Design, LLC](https://appshunter.io/developer/1190785004) |

## What reviewers say

### Enigma LC

[App page](https://appshunter.io/ios/app/enigma-lc/id1255835556)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cross CUB 110 | $3.99 | one-time |


### Cat CPU System

[App page](https://appshunter.io/ios/app/cat-cpu-system/id6695728672)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Enigma LC free?

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

### Is Cat CPU System free?

Cat CPU System is free to download, with no in-app purchases.

### Do Enigma LC or Cat CPU System have ads?

Neither Enigma LC nor Cat CPU System shows ads.

### Which is updated more often, Enigma LC or Cat CPU System?

Enigma LC ships an update every 20 months, and Cat CPU System weekly. Most recently, Enigma LC was updated on September 29, 2026 and Cat CPU System on October 3, 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.*