# Formula Coaching vs Built By Karl

The clearest difference is device support: Built By Karl at 3 against Formula Coaching's —. On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Formula Coaching sells 1 in-app purchase, starting at $200.00 per month and Built By Karl sells 1 in-app purchase, starting at $299.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Formula Coaching | Built By Karl |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | — | Every 3 months |
| Size | 24 MB | 56 MB |
| Requires iOS | **14.1** | 15.0 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Gary Crosby](https://appshunter.io/developer/1722655178) | [Karl Jardine](https://appshunter.io/developer/1874177894) |

## What reviewers say

### Formula Coaching

[App page](https://appshunter.io/ios/app/formula-coaching/id6474875932)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Coaching - Monthly | $200.00 | per month |


### Built By Karl

[App page](https://appshunter.io/ios/app/built-by-karl/id6758647480)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly 1-1 | $299.99 | per month |


## Frequently asked questions

### Is Formula Coaching free?

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

### Is Built By Karl free?

Built By Karl 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.*