# Dart Balloon vs Tower Stack Challenge

The clearest difference is ads: Dart Balloon at none against Tower Stack Challenge's shown. Dart Balloon also leads on update cadence (every 7 months vs every 17 months) and iOS requirement (12.0 vs 15.0). On price, 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.

Dart Balloon ships an update every 7 months, Tower Stack Challenge every 17 months. The most recent releases landed on September 17, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Dart Balloon | Tower Stack Challenge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 7 months** | Every 17 months |
| Size | 39 MB | 254 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VIET NAM YDC COMPANY LIMITED](https://appshunter.io/developer/945505939) | [KAKAK](https://appshunter.io/developer/1501395145) |

## What reviewers say

### Dart Balloon

[App page](https://appshunter.io/ios/app/dart-balloon-math-learning/id6458101564)

**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 Dart Balloon free?

Dart Balloon 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 Dart Balloon or Tower Stack Challenge have ads?

Tower Stack Challenge shows ads; Dart Balloon does not.

### Which is updated more often, Dart Balloon or Tower Stack Challenge?

Dart Balloon ships an update every 7 months, and Tower Stack Challenge every 17 months. Most recently, Dart Balloon was updated on September 17, 2026 and Tower Stack Challenge on September 20, 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.*