Don't Die vs Sun Day Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Don't Die
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.
- 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
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- SHARE: Share your health, achievements, knowledge, workouts, and more with a friendly and encouraging community. - EXPLORE: Connect with local Don’t Die communities and events near you. - LEVEL UP: Master health habits by constantly improving your Don’t Die Score. - COMPETE: See how your Don’t Die Score compares with your friends, family, and Bryan Johnson. - MEASURE: Connect your wearable to automatically calculate your daily Don’t Die Score, and track your progress over time towards longevity best practices.
Sun Day Tracker
Monitor your daily vitamin D absorption from sunlight exposure. This straightforward application helps you keep track of your sun-related vitamin D intake.
- Track daily vitamin D intake
- Sunlight exposure monitoring
- Simple interface
- Daily tracking
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A simple app to track you daily vitamin D intake from the sun.
Screenshots
Verdict
The clearest difference is update cadence: Don't Die at weekly against Sun Day Tracker's monthly. Don't Die also leads on rating (4.8 vs 4.6) and ratings volume (678 vs 28). Sun Day Tracker's advantage is review sentiment (83% vs 70%) and monetization model (free vs ad-supported). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Don't Die holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Don't Die has 678 ratings behind it against 28, so its average is the more settled of the two. Written reviews complicate that: 70% of Don't Die's written reviews are positive against 83% of Sun Day Tracker's, so the app with the better star average is not the one people write more warmly about.
Don't Die ships an update weekly, Sun Day Tracker monthly. The most recent releases landed on October 27, 2026 and October 21, 2026 respectively.
| Parameter | Don't Die | Sun Day Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (678 ratings) — better | 4.6 (28 ratings) |
| Positive reviews | 70.1% of reviews | 83.3% of reviews — better |
| Number of ratings | 678 — better | 28 |
| Update frequency | Weekly — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 53 MB | 1 MB |
| Age rating | 17+ | 4+ |
| Developer | Blueprint Bryan Johnson | permissionless tech, llc |
Customer experience
Don't Die
Sun Day Tracker
Bugs and requests
Don't Die
Reported bugs
3 issues- Difficulty verifying phone number
- Issues with updating fitness levels and leaderboard
- Compatibility problems on smaller devices
Requested features
3 requests- Option to use the app without linking personal data
- Improved stability and performance
- Enhanced leaderboard and fitness tracking features
Sun Day Tracker
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Don't Die
No in-app purchases
Sun Day Tracker
No in-app purchases
