# Kalcu vs x

The clearest difference is device support: Kalcu at 3 against x's 1. Kalcu also leads on iOS requirement (14.4 vs 18.0). On price, 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.

## The numbers

| Metric | Kalcu | x |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Size | 3 MB | 1 MB |
| Requires iOS | **14.4** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Martin Valorzi](https://appshunter.io/developer/1565585807) | [FMILLET](https://appshunter.io/developer/550887984) |

## What reviewers say

### Kalcu

[App page](https://appshunter.io/ios/app/kalcu/id1569210174)

**Features:** macOS Compatibility

**In-app purchases:** none


### x

[App page](https://appshunter.io/ios/app/x-cal-plus/id6747112339)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kalcu free?

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

### Is x free?

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

### Do Kalcu or x have ads?

Neither Kalcu nor x shows ads.

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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.*