# OTO FLEX vs Kh

The clearest difference is update cadence: Kh at every 2 weeks against OTO FLEX's monthly. OTO FLEX's advantage is iOS requirement (15.1 vs 18.0). 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.

OTO FLEX ships an update monthly, Kh every 2 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | OTO FLEX | Kh |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Size | 28 MB | 54 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OTO Global Inc.](https://appshunter.io/developer/1535770293) | [Atheer Mostafa](https://appshunter.io/developer/1504069980) |

## What reviewers say

### OTO FLEX

[App page](https://appshunter.io/ios/app/oto-flex/id1535770290)

**Features:** Vision Pro support

**In-app purchases:** none


### Kh

[App page](https://appshunter.io/ios/app/kh-mataem/id6738954587)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OTO FLEX free?

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

### Is Kh free?

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

### Do OTO FLEX or Kh have ads?

Neither OTO FLEX nor Kh shows ads.

### Which is updated more often, OTO FLEX or Kh?

OTO FLEX ships an update monthly, and Kh every 2 weeks. Most recently, OTO FLEX was updated on November 3, 2026 and Kh on November 4, 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.*