SunDay: Vitamin D & UV Tracker
Heuristic Innovations Health & Fitness iPhoneiPadiPod touch
SunDay: Vitamin D & UV Tracker is a free Health & Fitness app for iPhone and iPad by Heuristic Innovations. Rated 3.9/5 from 33 ratings. Requires iOS 16.0.
- Rating
- 3.9
- 33 ratings
- Price
- Free
- on the App Store
- Size
- 165 MB
- Age 4+
- Updated
- May 27
- 2025 · v3.2.3
Screenshots
About SunDay: Vitamin D & UV Tracker
Vitamin D made easy. Monitor your daily intake with our all-in-one Vitamin D solution. Track your vitamin D intake, measure progress, and create healthy habits. SunDay helps you make sure that you are safe while being out in the Sun. With our smart Timer you can relax while enjoying your time outside, as we will notify about sunburn risks. Don’t want to do it manually? Get your own trendy SunDay necklace and have the calculations done automatically no matter where and when! Taking some additional Vitamin D supplements for better health? Include them in your account and receive the most detailed information about your Vitamin D level. How it works ‣ Scan the Sun ‣ Start the timer ‣ Know when to end the session ‣ Complete daily vitamin D goal ‣ Track progress ‣ Build healthy habits Features • Solar UV Scanner • Sun Finder - for cloudy weather • Session Timer and Calculator • Vitamin D Supplements Calculator • Vitamin D Supplements reminders • Daily goals and reminders • Profile customization • Progress stats and achievements • Necklace integration The calculations are done with utmost precision based on your skin type, age, weight and clothing. In addition to helping prevent skin damage, SunDay will display how much vitamin D IU you receive during the time in direct sunlight. Our goals - Spread the word about the benefits of Sun-generated vitamin D - Prevent vitamin D deficiency among children and adults - Create more reasons for families to spend time outdoors - Healthier lifestyles Disclaimer SunDay is intended to be used for educational purposes only. It should not be used as a substitute for professional medical advice. Please consult your health care professional before making any health, medical or other decisions based on the results of the daily calculations of vitamin D intake provided by this app.
Ratings & reviews
3.9
33 ratings
What’s new
Version 3.2.3 · Updated May 27, 2025
We’ve made performance improvements and squashed some bugs to make tracking your Vitamin D even smoother. Enjoy a better, faster experience!
App privacy
The developer, Heuristic Innovations, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Identifiers: User ID
- Usage Data: Product Interaction
- Diagnostics: Crash Data
Used for: Analytics
Alternatives to SunDay: Vitamin D & UV Tracker
Looking for apps like SunDay: Vitamin D & UV Tracker? Here are 6 similar apps on the App Store. The highest rated is Vitamin D™ · UV Index (5.0/5), and all 6 are free to download.
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Vitamin D™ · UV Index
5.0
-
Sun Day Tracker
4.6
-
SmarTest Vitamin D
5.0
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SunSeek: Sunlight & Vitamin D
4.8
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Vitamin D Sun Tracker - Bask
4.7
-
Rays: Auto Vitamin D Tracking
4.4
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| SunDay: Vitamin D & UV Tracker | 3.9 / 5 (33 ratings) | Free | May 27, 2025 | |
| Vitamin D™ · UV Index | 5.0 / 5 (1) | Free | Jun 10, 2026 | Compare |
| Sun Day Tracker | 4.6 / 5 (28) | Free | Sep 9, 2025 | Compare |
| SmarTest Vitamin D | 5.0 / 5 (1) | Free | Aug 3, 2026 | Compare |
| SunSeek: Sunlight & Vitamin D | 4.8 / 5 (148) | Free | Sep 26, 2026 | Compare |
| Vitamin D Sun Tracker - Bask | 4.7 / 5 (25) | Free | Jul 9, 2026 | Compare |
| Rays: Auto Vitamin D Tracking | 4.4 / 5 (7) | Free | Aug 28, 2026 | Compare |