# Fill Color@Primosoft vs CRT

The clearest difference is update cadence: CRT at daily against Fill Color@Primosoft's every 9 months. Fill Color@Primosoft's advantage is iOS requirement (12.0 vs 15.0). On price, ads, 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.

Fill Color@Primosoft ships an update every 9 months, CRT daily. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Fill Color@Primosoft | CRT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 9 months | **Daily** |
| Size | 23 MB | 183 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Primosoft Inc](https://appshunter.io/developer/638687289) | [Takatsugu Fukushima](https://appshunter.io/developer/838891625) |

## What reviewers say

### Fill Color@Primosoft

[App page](https://appshunter.io/ios/app/fill-colorprimosoft/id1269512205)

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

**In-app purchases:** none


### CRT

[App page](https://appshunter.io/ios/app/crt-nbreak/id6736833528)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fill Color@Primosoft free?

Fill Color@Primosoft is free to download, with no in-app purchases.

### Is CRT free?

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

### Do Fill Color@Primosoft or CRT have ads?

Both Fill Color@Primosoft and CRT show ads.

### Which is updated more often, Fill Color@Primosoft or CRT?

Fill Color@Primosoft ships an update every 9 months, and CRT daily. Most recently, Fill Color@Primosoft was updated on October 7, 2026 and CRT on October 10, 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.*