# ZNTH Training vs Built By Karl

The clearest difference is update cadence: ZNTH Training at every 3 weeks against Built By Karl's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ZNTH Training sells 1 in-app purchase, starting at $99.99 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.

ZNTH Training ships an update every 3 weeks, Built By Karl every 3 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ZNTH Training | Built By Karl |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Size | 47 MB | 56 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Harry Pham](https://appshunter.io/developer/1633654403) | [Karl Jardine](https://appshunter.io/developer/1874177894) |

## What reviewers say

### ZNTH Training

[App page](https://appshunter.io/ios/app/znth-training/id1633654401)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $99.99 | 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 ZNTH Training free?

ZNTH Training 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.

### Do ZNTH Training or Built By Karl have ads?

Neither ZNTH Training nor Built By Karl shows ads.

### Which is updated more often, ZNTH Training or Built By Karl?

ZNTH Training ships an update every 3 weeks, and Built By Karl every 3 months. Most recently, ZNTH Training was updated on October 25, 2026 and Built By Karl on October 24, 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.*