# KALI vs TheFlex

The clearest difference is in-app purchases: KALI at none against TheFlex's 2. TheFlex's advantage is iOS requirement (13.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. TheFlex sells 2 in-app purchases, starting at $6.99 per month. KALI asks for nothing beyond the download.

KALI ships an update every 8 months, TheFlex every 6 months. The most recent releases landed on October 14, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | KALI | TheFlex |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 months** |
| Size | 550 MB | 14 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [K+S Minerals and Agriculture GmbH](https://appshunter.io/developer/868678369) | [Flexus AG](https://appshunter.io/developer/723422616) |

## What reviewers say

### KALI

[App page](https://appshunter.io/ios/app/kali-toolbox/id868678366)

**In-app purchases:** none


### TheFlex

[App page](https://appshunter.io/ios/app/theflex/id1621676862)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| License / Month | $6.99 | per month |
| License / Year | $68.99 | per year |


## Frequently asked questions

### Is KALI free?

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

### Is TheFlex free?

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

### Do KALI or TheFlex have ads?

Neither KALI nor TheFlex shows ads.

### Which is updated more often, KALI or TheFlex?

KALI ships an update every 8 months, and TheFlex every 6 months. Most recently, KALI was updated on October 14, 2026 and TheFlex on October 27, 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.*