# Robot Merge vs Stretch Robot

The clearest difference is ads: Robot Merge at none against Stretch Robot's shown. Robot Merge also leads on update cadence (every 4 days vs every 4 months) and review sentiment (80% vs 57%). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. Robot Merge sells 4 one-off in-app purchases and Stretch Robot sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for Robot Merge against 4.7 for Stretch Robot. That said, the two scores are not equally well evidenced: Robot Merge has 3.1K ratings behind it against 124, so its average is the more settled of the two. Written reviews are what separate them: 80% of Robot Merge's written reviews are positive against 57% of Stretch Robot's.

Robot Merge ships an update every 4 days, Stretch Robot every 4 months. The most recent releases landed on October 21, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Robot Merge | Stretch Robot |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (3.1K ratings)](https://appshunter.io/ios/app/robot-merge/id1418825045/reviews)** | [4.7 (124 ratings)](https://appshunter.io/ios/app/stretch-robot-physics-puzzle/id6473294292/reviews) |
| Number of ratings | **3.1K** | 124 |
| Positive reviews | **80.4% of reviews** | 57.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 4 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 196 MB | 185 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Umbrella Games LLC](https://appshunter.io/developer/1059299541) | [Lunapp, TOO](https://appshunter.io/developer/1669287025) |

## What reviewers say

### Robot Merge

[App page](https://appshunter.io/ios/app/robot-merge/id1418825045)

Merge identical robots to discover and collect 60 unique machines. Upgrade your buildings, earn coins, and expand your robot empire in this addictive collection game.

**Highlights:** Merge identical robots, Discover 60 unique machines, Upgrade buildings, Earn coins, Expand your world

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Budget Pack | $1.99 | one-time |
| Crate Of Gems | $4.99 | one-time |
| Shipment Of Gems | $9.99 | one-time |
| Mountain Of Gems | $29.99 | one-time |

**What reviewers like**

- 🤖 Excellent game
- 🤖 AWESOMEEE!!!!!
- 👍 Good, good, thanks for making this
- 🌟 Very calming
- 🤖 I like upgrading robots!

**What reviewers complain about**

- 🔒 Privacy concerns
- 🐛 Double charged for an in-app purchase
- 💰 Childrens game with NSFW ads
- 🐛 Needs an update badly!
- 🔍 Ads on a decent game

**Reported bugs**

- Lucky merges have stopped working
- Glitch where it chips gems when upgrading robots
- App freezing issues
- Incompatible with older devices
- Login screen freezes

**Requested features**

- More robots and other stages or worlds
- Leaderboard
- Auto assign robots to mines/buildings
- Dark mode option
- Advanced analytics dashboard


### Stretch Robot

[App page](https://appshunter.io/ios/app/stretch-robot-physics-puzzle/id6473294292)

Control a robot with extendable arms to solve physics-based puzzles. Stretch, grab, and swing to overcome obstacles like spikes and gaps using smart thinking and elastic mechanics. Enjoy handcrafted levels with a casual pace, perfect for quick, engaging brain teasers.

**Highlights:** Physics-based puzzle gameplay, Stretch mechanics, Handcrafted levels, Logic challenges, Casual pace, Intuitive physics

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Robot Merge free?

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

### Is Stretch Robot free?

Stretch Robot is free to download, with in-app purchases available.

### Which has better reviews, Robot Merge or Stretch Robot?

Robot Merge is rated higher. Robot Merge averages 4.8 out of 5 from 3.1K ratings, while Stretch Robot averages 4.7 from 124 ratings.

### Do Robot Merge or Stretch Robot have ads?

Stretch Robot shows ads; Robot Merge does not.

### Which is updated more often, Robot Merge or Stretch Robot?

Robot Merge ships an update every 4 days, and Stretch Robot every 4 months. Most recently, Robot Merge was updated on October 21, 2026 and Stretch Robot on October 19, 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.*