# CalcKit vs X CalcKits

The clearest difference is ads: CalcKit at none against X CalcKits's shown. X CalcKits's advantage is update cadence (every 4 months vs every 30 months) and iOS requirement (13.0 vs 15.6). On price, 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.

CalcKit ships an update every 30 months, X CalcKits every 4 months. Both last shipped on October 10, 2026.

## The numbers

| Metric | CalcKit | X CalcKits |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 30 months | **Every 4 months** |
| Monetization | Free | — |
| Size | 0 MB | 31 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Akkyra Systems](https://appshunter.io/developer/300710095) | [Singxi Limited](https://appshunter.io/developer/1844027284) |

## What reviewers say

### CalcKit

[App page](https://appshunter.io/ios/app/calckit/id321006774)

Design and build your own custom calculators with personalized formulas and input labels. Organize them into groups for easy access. Ideal for students, scientists, and engineers needing more than standard calculator functions.

**Highlights:** Design calculators with custom formulas, Up to seven user-defined variables, Built-in trig and math functions, Organize calculators into groups, Unlimited personal calculator creation

**Features:** macOS Compatibility

**In-app purchases:** none


### X CalcKits

[App page](https://appshunter.io/ios/app/x-calckits/id6757659022)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CalcKit free?

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

### Is X CalcKits free?

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

### Do CalcKit or X CalcKits have ads?

X CalcKits shows ads; CalcKit does not.

### Which is updated more often, CalcKit or X CalcKits?

CalcKit ships an update every 30 months, and X CalcKits every 4 months. Most recently, CalcKit was updated on October 10, 2026 and X CalcKits on October 10, 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.*