# CTR vs Color Purity

The clearest difference is update cadence: Color Purity at every 9 days against CTR's every 2 months. CTR's advantage is device support (4 vs 2). On price, ads, in-app purchases 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.

CTR ships an update every 2 months, Color Purity every 9 days. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | CTR | Color Purity |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Size | 54 MB | 57 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Christ The Redeemer Church](https://appshunter.io/developer/1307661090) | [Innersense Organic Beauty](https://appshunter.io/developer/1768275440) |

## What reviewers say

### CTR

[App page](https://appshunter.io/ios/app/ctr/id1307661093)

**Features:** Vision Pro support

**In-app purchases:** none


### Color Purity

[App page](https://appshunter.io/ios/app/color-purity/id6680194764)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CTR free?

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

### Is Color Purity free?

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

### Do CTR or Color Purity have ads?

Neither CTR nor Color Purity shows ads.

### Which is updated more often, CTR or Color Purity?

CTR ships an update every 2 months, and Color Purity every 9 days. Most recently, CTR was updated on October 2, 2026 and Color Purity on September 30, 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.*