# Rockets Stack vs Idle Merge

The clearest difference is rating: Idle Merge at 4.2 against Rockets Stack's 2.2. Idle Merge also leads on review sentiment (28% vs 18%). Rockets Stack's advantage is in-app purchases (none vs 5) and ratings volume (284 vs 73). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Idle Merge sells 5 one-off in-app purchases. Rockets Stack asks for nothing beyond the download.

Idle Merge holds the better App Store score, 4.2 against 2.2. Both are backed by a comparable volume of ratings — 284 and 73 respectively. Written reviews point the same way: 18% of Rockets Stack's written reviews are positive against 28% of Idle Merge's.

Rockets Stack ships an update fortnightly, Idle Merge every 2 weeks. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Rockets Stack | Idle Merge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.2 (284 ratings)](https://appshunter.io/ios/app/rockets-stack/id6475042655/reviews) | **[4.2 (73 ratings)](https://appshunter.io/ios/app/idle-merge-tank-battle/id6483254577/reviews)** |
| Number of ratings | **284** | 73 |
| Positive reviews | 18.0% of reviews | **28.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 385 MB | 270 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [SUPERSONIC STUDIOS LTD](https://appshunter.io/developer/1499845738) | [Nguyen Quang Khanh](https://appshunter.io/developer/1723119050) |

## What reviewers say

### Rockets Stack

[App page](https://appshunter.io/ios/app/rockets-stack/id6475042655)

Engage in thrilling battles by collecting powerful rockets to unleash upon monstrous foes. Strategize your collection and combat to achieve victory.

**Highlights:** Collect rockets, Destroy monsters, Strategic combat, Action gameplay

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Fast and addictive gameplay
- 👍 Fun and enjoyable experience
- 🔥 Satisfying rocket launching

**What reviewers complain about**

- 🐛 Bugs and glitches
- 🚫 Inability to progress past certain levels
- 💰 Excessive advertisements
- 🔒 Lack of progression and upgrades

**Reported bugs**

- Invisible or disappearing rocket launchers
- Progression stopping at certain levels
- Weapons not upgrading past a certain point
- Losing progress or inventory items

**Requested features**

- Ability to delete or discard unwanted crates
- More weapon and upgrade variety
- Improved game balance and progression


### Idle Merge

[App page](https://appshunter.io/ios/app/idle-merge-tank-battle/id6483254577)

Build and upgrade powerful tanks by merging components. Engage in intense PvE survival battles against waves of enemies or test your creations in real-time PvP duels. Earn rewards even while offline and strategize your way to becoming the ultimate tank commander.

**Highlights:** Merge and upgrade tank parts, Survival PvE battles, Real-time PvP duels, Idle offline rewards, Strategic tank customization

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diamond Pack 1 | $4.99 | one-time |
| Remove Ads | $6.99 | one-time |
| Diamond Pack 2 | $9.99 | one-time |
| Limited Offer | $12.99 | one-time |
| Diamond Pack 3 | $19.99 | one-time |


## Frequently asked questions

### Is Rockets Stack free?

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

### Is Idle Merge free?

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

### Which has better reviews, Rockets Stack or Idle Merge?

Idle Merge is rated higher. Rockets Stack averages 2.2 out of 5 from 284 ratings, while Idle Merge averages 4.2 from 73 ratings.

### Do Rockets Stack or Idle Merge have ads?

Both Rockets Stack and Idle Merge show ads.

### Which is updated more often, Rockets Stack or Idle Merge?

Rockets Stack ships an update fortnightly, and Idle Merge every 2 weeks. Most recently, Rockets Stack was updated on November 4, 2026 and Idle Merge on October 30, 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.*