# Kalc vs CalcKX

The clearest difference is update cadence: CalcKX at every 4 days against Kalc's every 9 days. On price, ads, 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.

Kalc ships an update every 9 days, CalcKX every 4 days. The most recent releases landed on June 1, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Kalc | CalcKX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/kalc/id610991936/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 96.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 4 days** |
| Monetization | Free | — |
| Size | 24 MB | 1 MB |
| Requires iOS | **13.4** | 14.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [YUTA OKAJIMA](https://appshunter.io/developer/610991939) | [Martin Kowollik](https://appshunter.io/developer/1496665932) |

## What reviewers say

### Kalc

[App page](https://appshunter.io/ios/app/kalc/id610991936)

This utility app offers a unit converter, calculator, and world clock. Its user-friendly interface is designed for quick access to everyday calculations and conversions.

**Highlights:** Unit converter, Calculator, World clock, Simple UI, Quick results

**Features:** macOS Compatibility

**In-app purchases:** none


### CalcKX

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kalc free?

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

### Is CalcKX free?

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

### Do Kalc or CalcKX have ads?

Neither Kalc nor CalcKX shows ads.

### Which is updated more often, Kalc or CalcKX?

Kalc ships an update every 9 days, and CalcKX every 4 days. Most recently, Kalc was updated on June 1, 2026 and CalcKX on September 13, 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.*