# Float or Sink vs catch a rainbow

The clearest difference is ads: catch a rainbow at none against Float or Sink's shown. catch a rainbow also leads on update cadence (every 7 months vs every 47 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Float or Sink ships an update every 47 months, catch a rainbow every 7 months. The most recent releases landed on October 15, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Float or Sink | catch a rainbow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/float-or-sink/id1419642133/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 47 months | **Every 7 months** |
| Monetization | Ad-supported | — |
| Size | 90 MB | 112 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Apps Bergman Ltda](https://appshunter.io/developer/1117417290) | [Evangelische Landeskirche in Baden](https://appshunter.io/developer/1780781705) |

## What reviewers say

### Float or Sink

[App page](https://appshunter.io/ios/app/float-or-sink/id1419642133)

Test your knowledge of physics by guessing if over 100 illustrated objects will float or sink. You have 10 seconds per object to make your choice, with real images to aid your decision.

**Highlights:** Over 100 objects, Illustrated objects with real images, 10-second time limit per object, Simple guessing gameplay, Suitable for all ages

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

**In-app purchases:** none


### catch a rainbow

[App page](https://appshunter.io/ios/app/catch-a-rainbow/id1481224505)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Float or Sink free?

Float or Sink is free to download, with no in-app purchases.

### Is catch a rainbow free?

catch a rainbow is free to download, with no in-app purchases.

### Do Float or Sink or catch a rainbow have ads?

Float or Sink shows ads; catch a rainbow does not.

### Which is updated more often, Float or Sink or catch a rainbow?

Float or Sink ships an update every 47 months, and catch a rainbow every 7 months. Most recently, Float or Sink was updated on October 15, 2026 and catch a rainbow on October 1, 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.*