# Shark Calculator vs FlatSixDynamics

The clearest difference is price: FlatSixDynamics at Free against Shark Calculator's $5.99. FlatSixDynamics also leads on iOS requirement (18.0 vs 26.2). Shark Calculator's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

FlatSixDynamics is free to download; Shark Calculator costs $5.99 up front. FlatSixDynamics sells 1 one-off in-app purchase. Shark Calculator asks for nothing beyond the download.

## The numbers

| Metric | Shark Calculator | FlatSixDynamics |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 6 days |
| Size | 13 MB | 40 MB |
| Requires iOS | 26.2 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mikolaj Adamowicz](https://appshunter.io/developer/1448003183) | [Juergen Groenner](https://appshunter.io/developer/6771928531) |

## What reviewers say

### Shark Calculator

[App page](https://appshunter.io/ios/app/shark-calculator/id6761344758)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### FlatSixDynamics

[App page](https://appshunter.io/ios/app/flatsixdynamics/id6771928529)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full access | $2.99 | one-time |


## Frequently asked questions

### Is Shark Calculator free?

Shark Calculator costs $5.99, with no in-app purchases.

### Is FlatSixDynamics free?

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

### Do Shark Calculator or FlatSixDynamics have ads?

Neither Shark Calculator nor FlatSixDynamics 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.*