# Stack Tower vs Blub

The clearest difference is in-app purchases: Blub at none against Stack Tower's 10. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Stack Tower sells 10 one-off in-app purchases. Blub asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 22, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Stack Tower | Blub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (17 ratings)](https://appshunter.io/ios/app/stack-tower-block-builder/id6756636822/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | Free with in-app purchases | — |
| Size | 59 MB | 57 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [udictio](https://appshunter.io/developer/1772355196) | [Sumin Lee](https://appshunter.io/developer/6782593857) |

## What reviewers say

### Stack Tower

[App page](https://appshunter.io/ios/app/stack-tower-block-builder/id6756636822)

This game offers a satisfying one-tap stacking challenge focused on precision and timing. Achieve perfect streaks with vibrant visual feedback and compete globally for high scores. Enjoy immersive visuals and inclusive design options.

**Highlights:** Satisfying "Perfect" Streaks, True Precision Gameplay, Aesthetic Immersion, Inclusive Design Options, Clutch Power-Ups (Undo, SlowMo, Revive, Solidify), Global Leaderboards

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Panic Bundle | $0.99 | one-time |
| 5 Undos | $0.99 | one-time |
| 5 Solidify | $0.99 | one-time |
| 5 Slow Motion | $0.99 | one-time |
| 15 Undos | $1.99 | one-time |
| 15 Solidify | $1.99 | one-time |
| 15 Slow Motion | $1.99 | one-time |
| 50 Undos | $4.99 | one-time |
| 50 Solidify | $4.99 | one-time |
| 50 Slow Motion | $4.99 | one-time |


### Blub

[App page](https://appshunter.io/ios/app/blub-tap-the-gap/id6782593855)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stack Tower free?

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

### Is Blub free?

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

### Do Stack Tower or Blub have ads?

Both Stack Tower and Blub show ads.

### Which is updated more often, Stack Tower or Blub?

Stack Tower ships an update every 5 days, and Blub every 5 days. Most recently, Stack Tower was updated on October 22, 2026 and Blub on October 21, 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.*