# Protein Only vs Slab

The clearest difference is monetization model: Protein Only at freemium against Slab's subscription. Protein Only also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.6). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Protein Only sells 2 in-app purchases, starting at $3.99 per month and Slab sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Protein Only against 5.0 for Slab. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

Protein Only ships an update weekly, Slab every 4 days. The most recent releases landed on November 7, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Protein Only | Slab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/protein-only-intake-tracker/id6801588201/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/slab-protein-tracker/id6807515971/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | **Freemium** | Subscription |
| Size | 32 MB | 9 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | +4 | 12+ |
| Developer | [Adelyons Software LLC](https://appshunter.io/developer/1889366918) | [One Step Forward Ventures](https://appshunter.io/developer/1895082047) |

## What reviewers say

### Protein Only

[App page](https://appshunter.io/ios/app/protein-only-intake-tracker/id6801588201)

This app focuses solely on tracking daily protein intake with a simple visual dial. It offers quick logging options, personalized goal setting, and optional features for GLP-1 users. The interface is designed for speed and ease of use, avoiding calorie counting or detailed food diaries.

**Highlights:** Visual protein goal ring, Quick logging (favorites, quick add, barcode scan), Photo estimate for protein, Personalized protein goals, GLP-1 mode for muscle protection, Streaks and history tracking, Optional fiber tracking ring

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ProteinOnly Pro (Monthly) | $3.99 | per month |
| ProteinOnly Pro (Annual) | $19.99 | per year |


### Slab

[App page](https://appshunter.io/ios/app/slab-protein-tracker/id6807515971)

This app focuses solely on tracking your daily protein intake, visualizing your progress with stacked blocks. It offers quick logging of common foods, barcode scanning, and custom entries, all without displaying calories or other nutritional data. The app emphasizes consistency and streaks, keeping your data private on your device.

**Highlights:** Protein-only tracking, Visual block-based logging, Quick log of frequent foods, Barcode scanning, Custom food entries, Progress streak tracking, Private, on-device data

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $5.99 | per month |
| Yearly | $29.99 | per year |


## Frequently asked questions

### Is Protein Only free?

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

### Is Slab free?

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

### Which has better reviews, Protein Only or Slab?

Protein Only and Slab are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do Protein Only or Slab have ads?

Neither Protein Only nor Slab shows ads.

### Which is updated more often, Protein Only or Slab?

Protein Only ships an update weekly, and Slab every 4 days. Most recently, Protein Only was updated on November 7, 2026 and Slab on November 6, 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.*