# PrimeCalc vs Color Calc+

The clearest difference is ads: Color Calc+ at none against PrimeCalc's shown. Color Calc+ also leads on update cadence (weekly vs every 5 weeks). PrimeCalc's advantage is iOS requirement (12.0 vs 15.0). On price, 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.

PrimeCalc ships an update every 5 weeks, Color Calc+ weekly. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | PrimeCalc | Color Calc+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/color-calc-plus/id6443727733/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | — | Free |
| Size | 12 MB | 58 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yutaka Nakao](https://appshunter.io/developer/1303008060) | [Jerry Watson](https://appshunter.io/developer/1647846813) |

## What reviewers say

### PrimeCalc

[App page](https://appshunter.io/ios/app/primecalc-modprime-factor/id1332239791)

**Features:** macOS Compatibility

**In-app purchases:** none


### Color Calc+

[App page](https://appshunter.io/ios/app/color-calc-plus/id6443727733)

This utility app provides a straightforward calculator with a history of past computations. It also offers temperature conversion tools and the ability to easily copy the most recent result.

**Highlights:** Calculator, Calculation history, Temperature conversion, Copy last result

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PrimeCalc free?

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

### Is Color Calc+ free?

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

### Do PrimeCalc or Color Calc+ have ads?

PrimeCalc shows ads; Color Calc+ does not.

### Which is updated more often, PrimeCalc or Color Calc+?

PrimeCalc ships an update every 5 weeks, and Color Calc+ weekly. Most recently, PrimeCalc was updated on October 14, 2026 and Color Calc+ 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.*