# CalcKX vs Hidden calc

The clearest difference is ads: CalcKX at none against Hidden calc's shown. CalcKX also leads on update cadence (every 4 days vs every 2 weeks). On price, in-app purchases, device support 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.

CalcKX ships an update every 4 days, Hidden calc every 2 weeks. The most recent releases landed on October 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | CalcKX | Hidden calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Size | 1 MB | 35 MB |
| Requires iOS | **14.1** | 15.8.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| 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


### Hidden calc

[App page](https://appshunter.io/ios/app/hidden-calc/id6502871727)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CalcKX free?

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

### Is Hidden calc free?

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

### Do CalcKX or Hidden calc have ads?

Hidden calc shows ads; CalcKX does not.

### Which is updated more often, CalcKX or Hidden calc?

CalcKX ships an update every 4 days, and Hidden calc every 2 weeks. Most recently, CalcKX was updated on October 25, 2026 and Hidden calc on October 10, 2026.

---

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