# MOON Fertility vs Brotein

The clearest difference is rating: Brotein at 5.0 against MOON Fertility's 1.0. Brotein also leads on update cadence (fortnightly vs every 6 months). MOON Fertility's advantage is in-app purchases (none vs 2) and iOS requirement (9.0 vs 15.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Brotein sells 2 in-app purchases, starting at $4.99 per month. MOON Fertility asks for nothing beyond the download.

Brotein holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

MOON Fertility ships an update every 6 months, Brotein fortnightly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | MOON Fertility | Brotein |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/moon-fertility/id1066185088/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/brotein-protein-tracker/id6770675718/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Fortnightly** |
| Monetization | **Free** | Freemium |
| Size | 42 MB | 21 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Daralabs](https://appshunter.io/developer/1025886821) | [Truls Nygaard](https://appshunter.io/developer/1896760368) |

## What reviewers say

### MOON Fertility

[App page](https://appshunter.io/ios/app/moon-fertility/id1066185088)

This app helps you understand your fertile window using body temperature data. Track your cycles daily and gain insights into your personal fertility patterns over time.

**Highlights:** Fertile window tracking, Cycle monitoring, Body temperature logging, Personalized cycle insights, Integration with Salinity device

**In-app purchases:** none


### Brotein

[App page](https://appshunter.io/ios/app/brotein-protein-tracker/id6770675718)

Effortlessly track your daily protein intake without complex calorie counting or distractions. Focus solely on hitting your protein goals with quick logging, AI-powered food scanning, and helpful reminders to maintain consistency and build healthy habits.

**Highlights:** Hit daily protein targets, Log protein intake in seconds, Scan food with AI for estimates, Track progress and streaks, Receive smart reminders, Build consistency and discipline

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Brotein Pro | $4.99 | per month |
| Brotein Pro | $39.99 | per year |


## Frequently asked questions

### Is MOON Fertility free?

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

### Is Brotein free?

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

### Which has better reviews, MOON Fertility or Brotein?

Brotein is rated higher. MOON Fertility averages 1.0 out of 5 from 1 ratings, while Brotein averages 5.0 from 1 ratings.

### Do MOON Fertility or Brotein have ads?

Neither MOON Fertility nor Brotein shows ads.

### Which is updated more often, MOON Fertility or Brotein?

MOON Fertility ships an update every 6 months, and Brotein fortnightly. Most recently, MOON Fertility was updated on November 2, 2026 and Brotein 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.*