# Fiber Maxing vs whenprotein

The clearest difference is in-app purchases: whenprotein at none against Fiber Maxing's 2. whenprotein also leads on ads (none vs shown) and update cadence (every 5 days vs every 5 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Fiber Maxing sells 2 in-app purchases, starting at $9.99 per month. whenprotein asks for nothing beyond the download.

Fiber Maxing ships an update every 5 weeks, whenprotein every 5 days. The most recent releases landed on October 4, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Fiber Maxing | whenprotein |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 5 days** |
| Size | 36 MB | 30 MB |
| Requires iOS | **14.0.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Ahmet Eren Ozdemir](https://appshunter.io/developer/1761335242) | [Daniela Machado](https://appshunter.io/developer/1890299511) |

## What reviewers say

### Fiber Maxing

[App page](https://appshunter.io/ios/app/fiber-maxing/id6751779886)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month of Pro | $9.99 | per month |
| 1 year of Pro | $89.99 | per year |


### whenprotein

[App page](https://appshunter.io/ios/app/whenprotein/id6761573375)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fiber Maxing free?

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

### Is whenprotein free?

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

### Do Fiber Maxing or whenprotein have ads?

Fiber Maxing shows ads; whenprotein does not.

### Which is updated more often, Fiber Maxing or whenprotein?

Fiber Maxing ships an update every 5 weeks, and whenprotein every 5 days. Most recently, Fiber Maxing was updated on October 4, 2026 and whenprotein on September 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*