# Merge Robots vs StackTowerPro

The clearest difference is in-app purchases: StackTowerPro at none against Merge Robots's 9. StackTowerPro also leads on update cadence (monthly vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Merge Robots sells 9 in-app purchases, starting at $1.99 per 7 days. StackTowerPro asks for nothing beyond the download.

Merge Robots ships an update every 2 months, StackTowerPro monthly. Both last shipped on November 3, 2026.

## The numbers

| Metric | Merge Robots | StackTowerPro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.3K ratings)](https://appshunter.io/ios/app/merge-robots-idle-games/id1471105839/reviews)** | — |
| Number of ratings | **1.3K** | — |
| Positive reviews | 85.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 120 MB | 51 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VIVA GAMES S.L.](https://appshunter.io/developer/1540545857) | [Wiktor Dziembaj](https://appshunter.io/developer/1676420005) |

## What reviewers say

### Merge Robots

[App page](https://appshunter.io/ios/app/merge-robots-idle-games/id1471105839)

Merge and evolve a collection of robots to create the most powerful mecha. Manage your robot factory, earn idle coins, and win rewards to advance faster. This casual game offers a satisfying progression for players.

**Highlights:** Merge and evolve over 35 robot types, Earn idle coins while offline, Daily rewards and wheel prizes, Manage robot factory and earnings, Discover and match dozens of bots

**Features:** Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Membership | $1.99 | per 7 days |
| Monthly Membership | $4.99 | per month |
| Diamonds Pack 1 | $0.99 | one-time |
| Diamonds Pack 2 | $3.99 | one-time |
| Welcome pack | $6.99 | one-time |
| Diamonds Pack 3 | $8.99 | one-time |
| Diamonds Pack 4 | $17.99 | one-time |
| Diamonds Pack 5 | $44.99 | one-time |
| Diamonds Pack 6 | $89.99 | one-time |

**What reviewers like**

- 🤩 Fun and addictive gameplay
- 👍 Satisfying merging mechanics
- 🚀 Fast-paced and responsive
- 💡 Transformers-inspired design

**What reviewers complain about**

- 🤖 Excessive ads and monetization
- 🐛 Bugs and glitches reported
- 🔋 Concerns about energy consumption

**Reported bugs**

- Leveling up robots resets progress
- Ads shown even when not purchasing

**Requested features**

- Add more robots to merge
- Implement robot naming feature
- Create a combat or battle mode


### StackTowerPro

[App page](https://appshunter.io/ios/app/stacktowerpro/id6446167984)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Merge Robots free?

Merge Robots is free to download, with in-app purchases available.

### Is StackTowerPro free?

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

### Which is updated more often, Merge Robots or StackTowerPro?

Merge Robots ships an update every 2 months, and StackTowerPro monthly. Most recently, Merge Robots was updated on November 3, 2026 and StackTowerPro on November 3, 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.*