# Prison Tower vs CalcZombie

The clearest difference is ads: CalcZombie at none against Prison Tower's shown. CalcZombie also leads on iOS requirement (8.1 vs 13.0). Prison Tower's advantage is update cadence (every 4 months vs every 76 months). 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.

Prison Tower ships an update every 4 months, CalcZombie every 76 months. The most recent releases landed on October 15, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Prison Tower | CalcZombie |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (14 ratings)](https://appshunter.io/ios/app/prison-tower/id574690680/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 72.4% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 4 months** | Every 76 months |
| Monetization | Free | — |
| Size | 14 MB | 27 MB |
| Requires iOS | 13.0 | **8.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Masakazu Yonehara](https://appshunter.io/developer/1339210794) | [OMOSHIRO KAKUMEI CAPSULE PLUS, K.K.](https://appshunter.io/developer/342689348) |

## What reviewers say

### Prison Tower

[App page](https://appshunter.io/ios/app/prison-tower/id574690680)

Build a towering stack of heroes by strategically dropping them. Guide the princess to safety by climbing the tower. Experience a fresh take on classic block-stacking gameplay with engaging modes.

**Highlights:** Stack heroes vertically, Rescue trapped princess, Strategic tap-to-drop gameplay, Prison Tower rescue mode, Challenge Mode for high scores

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

**In-app purchases:** none

**What reviewers like**

- 👍 Addictive gameplay
- 🎨 Cute and attractive graphics
- 🎵 Great music and sound effects
- ⏱️ Good time killer
- 🤏 Small download size

**What reviewers complain about**

- 🥱 Gets repetitive
- 😠 Frustrating difficulty
- 📉 Poor start screen responsiveness
- 🤷‍♀️ Gameplay can be boring
- 🧱 Stacking issues

**Reported bugs**

- Game over at level 92 in challenge mode
- Start screen unresponsive
- Crashes frequently
- Fairies carrying people instead of princess
- People not stacking properly

**Requested features**

- New OS compatibility
- Improved start screen responsiveness
- More variety in gameplay
- Fix fairies carrying people instead of princess
- Fix fairies carrying people instead of princess


### CalcZombie

[App page](https://appshunter.io/ios/app/calczombie/id739922348)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Prison Tower free?

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

### Is CalcZombie free?

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

### Do Prison Tower or CalcZombie have ads?

Prison Tower shows ads; CalcZombie does not.

### Which is updated more often, Prison Tower or CalcZombie?

Prison Tower ships an update every 4 months, and CalcZombie every 76 months. Most recently, Prison Tower was updated on October 15, 2026 and CalcZombie on October 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.*