# 4k Weeks vs PRO.TEIN

The clearest difference is price: PRO.TEIN at Free against 4k Weeks's $1.99. 4k Weeks's advantage is in-app purchases (none vs 4) and iOS requirement (18.4 vs 26.0). On ads and device support there is nothing between them.

PRO.TEIN is free to download; 4k Weeks costs $1.99 up front. PRO.TEIN sells 4 in-app purchases, starting at $3.99 per 7 days. 4k Weeks asks for nothing beyond the download.

## The numbers

| Metric | 4k Weeks | PRO.TEIN |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Size | 9 MB | 15 MB |
| Requires iOS | **18.4** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ALBERT DONAIRE ESCRIGAS](https://appshunter.io/developer/1805379390) | [Piotr Sirek](https://appshunter.io/developer/1763583881) |

## What reviewers say

### 4k Weeks

[App page](https://appshunter.io/ios/app/4k-weeks/id6744328745)

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

**In-app purchases:** none


### PRO.TEIN

[App page](https://appshunter.io/ios/app/protein-protein-tracker/id6798395288)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO.TEIN Plus Weekly | $3.99 | per 7 days |
| Plus Annual (Special Offer) | $24.99 | per year |
| PRO.TEIN Plus Annual | $39.99 | per year |
| PRO.TEIN Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is 4k Weeks free?

4k Weeks costs $1.99, with no in-app purchases.

### Is PRO.TEIN free?

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

### Do 4k Weeks or PRO.TEIN have ads?

Neither 4k Weeks nor PRO.TEIN 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.*