# Project Serotonin vs Serotonin Coach

The clearest difference is review sentiment: Serotonin Coach at 100% against Project Serotonin's 50%. Serotonin Coach also leads on rating (4.9 vs 4.2) and device support (4 vs 2). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Serotonin Coach holds the better App Store score, 4.9 against 4.2. Both are backed by a comparable volume of ratings — 10 and 10 respectively. Written reviews point the same way: 50% of Project Serotonin's written reviews are positive against 100% of Serotonin Coach's.

Project Serotonin ships an update every 3 weeks, Serotonin Coach every 6 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Project Serotonin | Serotonin Coach |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (10 ratings)](https://appshunter.io/ios/app/project-serotonin/id1316376485/reviews) | **[4.9 (10 ratings)](https://appshunter.io/ios/app/serotonin-coach/id1567601248/reviews)** |
| Number of ratings | 10 | 10 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free | Free |
| Size | 177 MB | 167 MB |
| Requires iOS | 15.6 | **15.5** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Serotonin Inc](https://appshunter.io/developer/1316376484) | [Serotonin Enterprises LLC](https://appshunter.io/developer/1567601250) |

## What reviewers say

### Project Serotonin

[App page](https://appshunter.io/ios/app/project-serotonin/id1316376485)

This platform offers personalized health protocols based on your biomarkers, genetics, and lifestyle. It helps optimize foundational health, reduce disease risk, and improve longevity through targeted recommendations for diet, sleep, exercise, and supplementation.

**Highlights:** Personalized health protocols, Supplement tracking and scanning, Diet, fasting, and lifestyle logging, Biomarker tracking and lab ordering, Wearable device integration, Expert care concierge support, Community motivation features

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

**In-app purchases:** none


### Serotonin Coach

[App page](https://appshunter.io/ios/app/serotonin-coach/id1567601248)

This app helps you achieve your health and fitness goals by tracking workouts and meals, measuring progress, and connecting you with your personal coach. It offers personalized training plans, nutrition management, and real-time messaging with your coach.

**Highlights:** Workout tracking, Meal management, Progress monitoring, Personalized training plans, Real-time coach messaging, Body measurement tracking, Wearable device integration

**Features:** Apple Wallet, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Project Serotonin free?

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

### Is Serotonin Coach free?

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

### Which has better reviews, Project Serotonin or Serotonin Coach?

Serotonin Coach is rated higher. Project Serotonin averages 4.2 out of 5 from 10 ratings, while Serotonin Coach averages 4.9 from 10 ratings.

### Do Project Serotonin or Serotonin Coach have ads?

Neither Project Serotonin nor Serotonin Coach shows ads.

### Which is updated more often, Project Serotonin or Serotonin Coach?

Project Serotonin ships an update every 3 weeks, and Serotonin Coach every 6 weeks. Most recently, Project Serotonin was updated on October 23, 2026 and Serotonin Coach on October 24, 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.*