# NutrientOS vs Protein Tracker

The clearest difference is update cadence: Protein Tracker at weekly against NutrientOS's fortnightly. NutrientOS's advantage is iOS requirement (15.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. NutrientOS sells 2 in-app purchases, starting at $7.99 per month and Protein Tracker sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

NutrientOS ships an update fortnightly, Protein Tracker weekly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | NutrientOS | Protein Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/nutrientos-calorie-tracker/id6765582312/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 65 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Jeremiyah Escobedo](https://appshunter.io/developer/1895999641) | [Ruslan Shadura](https://appshunter.io/developer/1817830161) |

## What reviewers say

### NutrientOS

[App page](https://appshunter.io/ios/app/nutrientos-calorie-tracker/id6765582312)

Track your nutrition, understand your meals, and build healthier habits with food logging, macro and micronutrient tracking, and workout logging. Optional AI tools offer advanced guidance and insights for personalized wellness.

**Highlights:** Food diary with calories, macros, and micronutrients, Barcode and food search, Restaurant menu browsing, Fitness, hydration, and sleep tracking, AI meal scan, AI Coach for guidance, AI recipe builder

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Atlas Pro Monthly | $7.99 | per month |
| Atlas Premium Monthly | $12.99 | per month |


### Protein Tracker

[App page](https://appshunter.io/ios/app/protein-tracker-gramli/id6797191475)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Annual | $14.99 | per year |


## Frequently asked questions

### Is NutrientOS free?

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

### Is Protein Tracker free?

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

### Do NutrientOS or Protein Tracker have ads?

Neither NutrientOS nor Protein Tracker shows ads.

### Which is updated more often, NutrientOS or Protein Tracker?

NutrientOS ships an update fortnightly, and Protein Tracker weekly. Most recently, NutrientOS was updated on November 5, 2026 and Protein Tracker on October 31, 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.*