# BUA vs Kartlek

The clearest difference is iOS requirement: BUA at 15.1 against Kartlek's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BUA ships an update weekly, Kartlek every 8 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | BUA | Kartlek |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 8 days |
| Size | 41 MB | 71 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [BUA](https://appshunter.io/developer/1559704786) | [Mats Hauge](https://appshunter.io/developer/662104045) |

## What reviewers say

### BUA

[App page](https://appshunter.io/ios/app/bua/id6751030073)

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

**In-app purchases:** none


### Kartlek

[App page](https://appshunter.io/ios/app/kartlek/id6767159327)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BUA free?

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

### Is Kartlek free?

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

### Do BUA or Kartlek have ads?

Neither BUA nor Kartlek shows ads.

### Which is updated more often, BUA or Kartlek?

BUA ships an update weekly, and Kartlek every 8 days. Most recently, BUA was updated on November 5, 2026 and Kartlek on October 31, 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.*