# Bubble Grotto vs Osushi211

The clearest difference is ads: Osushi211 at none against Bubble Grotto's shown. Osushi211 also leads on update cadence (every 2 weeks vs every 3 months). Bubble Grotto's advantage is iOS requirement (15.0 vs 26.2). 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.

Bubble Grotto ships an update every 3 months, Osushi211 every 2 weeks. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Bubble Grotto | Osushi211 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 187 MB | 36 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [John McArthur](https://appshunter.io/developer/1833458858) | [Kawamata Koichiro](https://appshunter.io/developer/788575817) |

## What reviewers say

### Bubble Grotto

[App page](https://appshunter.io/ios/app/bubble-grotto-physics-arcade/id6758051897)

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

**In-app purchases:** none


### Osushi211

[App page](https://appshunter.io/ios/app/osushi211/id6758653710)

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

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Grotto free?

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

### Is Osushi211 free?

Osushi211 is free to download, with no in-app purchases.

### Do Bubble Grotto or Osushi211 have ads?

Bubble Grotto shows ads; Osushi211 does not.

### Which is updated more often, Bubble Grotto or Osushi211?

Bubble Grotto ships an update every 3 months, and Osushi211 every 2 weeks. Most recently, Bubble Grotto was updated on October 28, 2026 and Osushi211 on October 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.*