# Starfit vs Function Health

The clearest difference is monetization model: Starfit at free against Function Health's subscription. Starfit also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.4). Function Health's advantage is review sentiment (62% vs 38%) and rating (4.9 vs 4.7). On price, ads and in-app purchases there is nothing between them.

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

Function Health holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 5.6K and 25K respectively. Written reviews point the same way: 38% of Starfit's written reviews are positive against 62% of Function Health's.

Starfit ships an update every 3 weeks, Function Health weekly. Both last shipped on October 27, 2026.

## The numbers

| Metric | Starfit | Function Health |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (5.6K ratings)](https://appshunter.io/ios/app/starfit/id1598541728/reviews) | **[4.9 (25K ratings)](https://appshunter.io/ios/app/function-health/id6471280307/reviews)** |
| Number of ratings | 5.6K | **25K** |
| Positive reviews | 37.8% of reviews | **61.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | **Free** | Subscription |
| Size | 166 MB | 203 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [RUNSTAR FL INC.](https://appshunter.io/developer/1761559273) | [Function Health](https://appshunter.io/developer/1715014524) |

## What reviewers say

### Starfit

[App page](https://appshunter.io/ios/app/starfit/id1598541728)

Track your body composition, including BMI, body fat, muscle mass, and more. The app offers intelligent data analysis and reporting, with options for baby or pet weight tracking. It also integrates with Apple Health to share your health data.

**Highlights:** Body composition tracking (BMI, body fat, muscle mass), Body girth measurement, Baby/pet weight tracking, Cloud-based data analysis, HealthKit integration, Health reports and charts

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 💪 Provides detailed body composition data
- 🤝 Connects to Apple Watch
- 🔍 Tracks weight and other metrics over time

**What reviewers complain about**

- 🐛 App crashes and connectivity issues
- 🤔 Inaccurate or questionable body composition measurements
- 📊 Limited charting and data visualization features
- 🤷‍♀️ Confusing or inappropriate body type classifications

**Reported bugs**

- App crashes on startup
- Scale fails to connect to app
- Metrics not recording properly
- Language settings reverting unexpectedly

**Requested features**

- Add manual data entry and editing
- Improve Bluetooth connectivity and syncing
- Provide more customization and settings options
- Enhance charting and historical data views
- Implement pregnancy mode or adjustments


### Function Health

[App page](https://appshunter.io/ios/app/function-health/id6471280307)

Take control of your health with comprehensive lab testing, personalized protocols, and AI-powered insights. Understand your body's data, track changes over time, and make informed decisions for long-term wellness. Connect wearables and upload records for a complete health picture.

**Highlights:** 160+ lab tests annually, Personalized health protocols, Private AI Chat for results, Connect health wearables, Advanced MRI & CT scans, Upload health records

**Features:** Apple Wallet

**In-app purchases:** none

**What reviewers like**

- 🚀 Seamless process for blood tests and results
- 📊 Comprehensive health insights and tracking
- 🧠 Helpful clinician notes and recommendations
- 👍 User-friendly and visually appealing app
- 💰 Affordable compared to other options

**What reviewers complain about**

- 🔍 Lack of communication and support responsiveness
- 🐛 Some bugs and usability issues in the app

**Reported bugs**

- App sometimes redirects back to the home screen when trying to view results
- Occasional typos and formatting issues in the app

**Requested features**

- More customization options in the app settings
- Ability to print or export test results and recommendations
- Specific supplement recommendations rather than broad suggestions


## Frequently asked questions

### Is Starfit free?

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

### Is Function Health free?

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

### Which has better reviews, Starfit or Function Health?

Function Health is rated higher. Starfit averages 4.7 out of 5 from 5.6K ratings, while Function Health averages 4.9 from 25K ratings.

### Do Starfit or Function Health have ads?

Neither Starfit nor Function Health shows ads.

### Which is updated more often, Starfit or Function Health?

Starfit ships an update every 3 weeks, and Function Health weekly. Most recently, Starfit was updated on October 27, 2026 and Function Health on October 27, 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.*