# Color One Pro vs RainbowSifter

The clearest difference is in-app purchases: RainbowSifter at none against Color One Pro's 1. RainbowSifter also leads on iOS requirement (18.6 vs 26.0). Color One Pro's advantage is device support. On price, rating, ratings volume and monetization model there is nothing between them.

Both are free to download. Color One Pro sells 1 one-off in-app purchase. RainbowSifter asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Color One Pro against 5.0 for RainbowSifter. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

## The numbers

| Metric | Color One Pro | RainbowSifter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/color-one-pro/id1437829358/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/rainbowsifter/id1616453352/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 10 months | — |
| Monetization | Free | Free |
| Size | 11 MB | 8 MB |
| Requires iOS | 26.0 | **18.6** |
| Devices | **iPhone, iPad** | — |
| Age rating | 4+ | 4+ |
| Developer | [Gerhard Lentschik](https://appshunter.io/developer/629988041) | [Robert Hennessy](https://appshunter.io/developer/381643143) |

## What reviewers say

### Color One Pro

[App page](https://appshunter.io/ios/app/color-one-pro/id1437829358)

A puzzle game where players aim to fill the entire board with a single color. Select adjacent colors to expand your colored area, but be mindful of the move limit. Compete for high scores on the leaderboard.

**Highlights:** Fill playing field with one color, Expand colored area, Limited color selections, Leaderboard for scores, Simple tap controls

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Advertising | $1.99 | one-time |


### RainbowSifter

[App page](https://appshunter.io/ios/app/rainbowsifter/id1616453352)

A color-matching puzzle game where players select six primary rainbow colors from an expanding selection. Drag colors to a target to build your rainbow. Long-press the target for additional options.

**Highlights:** Color selection, Rainbow building, Drag and drop interface, Long press options, Increasing difficulty

**In-app purchases:** none


## Frequently asked questions

### Is Color One Pro free?

Color One Pro is free to download, with in-app purchases available.

### Is RainbowSifter free?

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

### Which has better reviews, Color One Pro or RainbowSifter?

Color One Pro and RainbowSifter are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

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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.*