# Fill Color@Primosoft vs KWPC.

The clearest difference is iOS requirement: Fill Color@Primosoft at 12.0 against KWPC.'s 18.2. On price, update cadence, ads and in-app purchases 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, KWPC. every 7 months. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Fill Color@Primosoft | KWPC. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 9 months | **Every 7 months** |
| Size | 23 MB | 12 MB |
| Requires iOS | **12.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Primosoft Inc](https://appshunter.io/developer/638687289) | [VMPP LLC](https://appshunter.io/developer/1818161945) |

## 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


### KWPC.

[App page](https://appshunter.io/ios/app/kwpc/id6746731095)

**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 KWPC. free?

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

### Do Fill Color@Primosoft or KWPC. have ads?

Both Fill Color@Primosoft and KWPC. show ads.

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

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