# Function Health vs Don't Die

The clearest difference is monetization model: Don't Die at ad-supported against Function Health's subscription. Function Health's advantage is ratings volume (25K vs 641). On price, rating, review sentiment and update cadence there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.9 for Function Health against 4.8 for Don't Die. That said, the two scores are not equally well evidenced: Function Health has 25K ratings behind it against 641, so its average is the more settled of the two. Written reviews are what separate them: 62% of Function Health's written reviews are positive against 68% of Don't Die's.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 25, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Function Health | Don't Die |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (25K ratings)](https://appshunter.io/ios/app/function-health/id6471280307/reviews)** | [4.8 (641 ratings)](https://appshunter.io/ios/app/dont-die-bryan-johnson/id6479563760/reviews) |
| Number of ratings | **25K** | 641 |
| Positive reviews | 61.9% of reviews | **68.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | Subscription | **Ad-supported** |
| Size | 201 MB | 53 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [Function Health](https://appshunter.io/developer/1715014524) | [Blueprint Bryan Johnson](https://appshunter.io/developer/1736333773) |

## What reviewers say

### 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


### Don't Die

[App page](https://appshunter.io/ios/app/dont-die-bryan-johnson/id6479563760)

This app fosters a supportive community for sharing health journeys and achievements. It helps users improve their longevity score through habit mastery, local event connections, and friendly competition. Integrate wearables for automatic score calculation and progress tracking.

**Highlights:** Share health achievements with community, Connect with local communities and events, Improve health habits and Don't Die Score, Compete with friends and family on scores, Measure progress with wearable integration

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

**In-app purchases:** none

**What reviewers like**

- 👍 Amazing community
- 🚀 Great app interface
- 💡 Interesting concept and mission
- 👍 Engaging social experience
- 👍 Seamless integration with health tracking

**What reviewers complain about**

- 🐛 Technical issues (glitches, freezing, crashes)
- 🐛 Poor UX for certain features (e.g., replying to comments)
- 🔒 Privacy concerns around data sharing
- 🔧 Needs more polish and refinement

**Reported bugs**

- Difficulty verifying phone number
- Issues with updating fitness levels and leaderboard
- Compatibility problems on smaller devices

**Requested features**

- Option to use the app without linking personal data
- Improved stability and performance
- Enhanced leaderboard and fitness tracking features


## Frequently asked questions

### Is Function Health free?

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

### Is Don't Die free?

Don't Die is free to download, with no in-app purchases.

### Which has better reviews, Function Health or Don't Die?

Function Health is rated higher. Function Health averages 4.9 out of 5 from 25K ratings, while Don't Die averages 4.8 from 641 ratings.

### Do Function Health or Don't Die have ads?

Neither Function Health nor Don't Die shows ads.

### Which is updated more often, Function Health or Don't Die?

Function Health ships an update weekly, and Don't Die weekly. Most recently, Function Health was updated on September 25, 2026 and Don't Die on September 22, 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.*