# Round and Round vs Alien Slime

The clearest difference is price: Round and Round at Free against Alien Slime's $0.99. Round and Round also leads on update cadence (weekly vs every 14 months) and iOS requirement (11.0 vs 16.0). Alien Slime's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

Round and Round is free to download; Alien Slime costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Round and Round ships an update weekly, Alien Slime every 14 months. The most recent releases landed on October 27, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Round and Round | Alien Slime |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 14 months |
| Size | 43 MB | 13 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [U-WORKS inc](https://appshunter.io/developer/366783896) | [JS Digital Productions, Inc.](https://appshunter.io/developer/1012108950) |

## What reviewers say

### Round and Round

[App page](https://appshunter.io/ios/app/round-and-round/id366783893)

**Features:** Vision Pro support

**In-app purchases:** none


### Alien Slime

[App page](https://appshunter.io/ios/app/alien-slime/id1275567537)

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

**In-app purchases:** none


## Frequently asked questions

### Is Round and Round free?

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

### Is Alien Slime free?

Alien Slime costs $0.99, with no in-app purchases.

### Do Round and Round or Alien Slime have ads?

Round and Round shows ads; Alien Slime does not.

### Which is updated more often, Round and Round or Alien Slime?

Round and Round ships an update weekly, and Alien Slime every 14 months. Most recently, Round and Round was updated on October 27, 2026 and Alien Slime on September 25, 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.*