# CalcKX vs Calculator with 12 button

The clearest difference is ads: CalcKX at none against Calculator with 12 button's shown. CalcKX also leads on update cadence (every 4 days vs every 2 months) and device support (3 vs 1). On price 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.

CalcKX ships an update every 4 days, Calculator with 12 button every 2 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | CalcKX | Calculator with 12 button |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 2 months |
| Size | 1 MB | 42 MB |
| Requires iOS | **14.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Martin Kowollik](https://appshunter.io/developer/1496665932) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### CalcKX

[App page](https://appshunter.io/ios/app/calckx/id1583409123)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calculator with 12 button

[App page](https://appshunter.io/ios/app/calculator-with-12-button/id6754877013)

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

**In-app purchases:** none


## Frequently asked questions

### Is CalcKX free?

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

### Is Calculator with 12 button free?

Calculator with 12 button is free to download, with no in-app purchases.

### Do CalcKX or Calculator with 12 button have ads?

Calculator with 12 button shows ads; CalcKX does not.

### Which is updated more often, CalcKX or Calculator with 12 button?

CalcKX ships an update every 4 days, and Calculator with 12 button every 2 months. Most recently, CalcKX was updated on October 25, 2026 and Calculator with 12 button on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*