# Bus Swap! vs Tower Stack Challenge

The clearest difference is update cadence: Bus Swap! at every 2 days against Tower Stack Challenge's every 17 months. Bus Swap! also leads on iOS requirement (12.0 vs 15.0). 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.

Bus Swap! ships an update every 2 days, Tower Stack Challenge every 17 months. Both last shipped on October 7, 2026.

## The numbers

| Metric | Bus Swap! | Tower Stack Challenge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 2 days** | Every 17 months |
| Size | 216 MB | 254 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [3A YAPIM VE YAZILIM DANISMANLIK LIMITED SIRKETI](https://appshunter.io/developer/1493049868) | [KAKAK](https://appshunter.io/developer/1501395145) |

## What reviewers say

### Bus Swap!

[App page](https://appshunter.io/ios/app/bus-swap/id6529531641)

**Features:** macOS Compatibility

**In-app purchases:** none


### Tower Stack Challenge

[App page](https://appshunter.io/ios/app/tower-stack-challenge/id6737799812)

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

**In-app purchases:** none


## Frequently asked questions

### Is Bus Swap! free?

Bus Swap! is free to download, with no in-app purchases.

### Is Tower Stack Challenge free?

Tower Stack Challenge is free to download, with no in-app purchases.

### Do Bus Swap! or Tower Stack Challenge have ads?

Both Bus Swap! and Tower Stack Challenge show ads.

### Which is updated more often, Bus Swap! or Tower Stack Challenge?

Bus Swap! ships an update every 2 days, and Tower Stack Challenge every 17 months. Most recently, Bus Swap! was updated on October 7, 2026 and Tower Stack Challenge on October 7, 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.*