# CalcKX vs Level pro

The clearest difference is price: CalcKX at Free against Level pro's $3.99. CalcKX also leads on update cadence (every 4 days vs fortnightly). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

CalcKX is free to download; Level pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CalcKX ships an update every 4 days, Level pro fortnightly. The most recent releases landed on September 13, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | CalcKX | Level pro |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Fortnightly |
| Size | 1 MB | 25 MB |
| Requires iOS | 14.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Martin Kowollik](https://appshunter.io/developer/1496665932) | [DIETER AUGUST DR. ACKERMANN](https://appshunter.io/developer/1796660549) |

## What reviewers say

### CalcKX

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Level pro

[App page](https://appshunter.io/ios/app/level-pro/id6742112391)

**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 Level pro free?

Level pro costs $3.99, with no in-app purchases.

### Do CalcKX or Level pro have ads?

Neither CalcKX nor Level pro shows ads.

### Which is updated more often, CalcKX or Level pro?

CalcKX ships an update every 4 days, and Level pro fortnightly. Most recently, CalcKX was updated on September 13, 2026 and Level pro on September 21, 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.*