# CalcKit vs Formulize

The clearest difference is in-app purchases: CalcKit at none against Formulize's 1. CalcKit also leads on device support and iOS requirement (15.6 vs 17.5). On price there is nothing between them.

Both are free to download. Formulize sells 1 one-off in-app purchase. CalcKit asks for nothing beyond the download.

## The numbers

| Metric | CalcKit | Formulize |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | Every 30 months | — |
| Monetization | Free | — |
| Size | 0 MB | 30 MB |
| Requires iOS | **15.6** | 17.5 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Akkyra Systems](https://appshunter.io/developer/300710095) | [Morten Gregersen](https://appshunter.io/developer/414244543) |

## 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


### Formulize

[App page](https://appshunter.io/ios/app/formulize/id6503178796)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Formulize Pro | $2.99 | one-time |


## Frequently asked questions

### Is CalcKit free?

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

### Is Formulize free?

Formulize is free to download, with in-app purchases available.

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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.*