Sunny: UV Index & SPF
Thomas Brandstaetter Health & Fitness iPhoneiPadiPod touch
Sunny: UV Index & SPF is a free Health & Fitness app for iPhone and iPad by Thomas Brandstaetter. Requires iOS 18.0. Updated October 21, 2026.
- Price
- Free
- on the App Store
- Size
- 56 MB
- Age 4+
- Updated
- Oct 21
- 2026 · v1.3
Screenshots
About Sunny: UV Index & SPF
Sunny helps you understand the UV index and protect your skin. Know how long you can stay outside before sunburn risk increases. Get personalized time-until-sunburn estimates, SPF guidance, Vitamin D estimates, and Time in Daylight insights. Features: • Real-time UV Index for your current location • 10-day UV and weather forecast • Personalized sunburn risk based on your skin type, location, UV level, exposed skin, and SPF • Skin type setup via Apple Health, guided estimation, or manual entry • SPF guidance for applying, reapplying, and knowing when UV is low enough • Vitamin D estimates based on UV, skin type, exposed skin, and sunscreen • Time in Daylight insights with Apple Health when available • Live Activities for sun exposure sessions on your Lock Screen • Reliable sun exposure alarms that can alert you before you reach sunburn risk • Smart notifications for high UV, sunscreen, Vitamin D windows, and active sessions • Apple Health sync for Time in Daylight, UV exposure, and Vitamin D estimates • Science-based guidance using UV intensity, skin type, SPF, and exposed skin • Beautiful, simple UV-aware design that adapts its colors to the current sun intensity • Accessibility support with Dynamic Type and VoiceOver Privacy: • Sensitive health and skin information stays on your device • No account required *Sunny is for informational purposes only and does not provide medical advice, diagnosis, or treatment. Always use sunscreen as appropriate and consult a qualified healthcare professional for health-related decisions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
What’s new
Version 1.3 · Updated October 21, 2026
Ready for iPhone Duo! We have reimagined Sunny's Liquid Glass interface to make the most of the available screen space across portrait, landscape, and partially folded positions, so it feels right at home on iPhone Duo. If you're enjoying Sunny, please consider leaving a rating or review on the App Store. And if you have ideas, feedback, or run into any issues, we’d love to hear from you at [email protected].
App privacy
The developer, Thomas Brandstaetter, 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:
- Purchases: Purchase History
- Identifiers: Device ID
- Usage Data: Product Interaction
- Other Data: Other Data Types
- Location: Precise Location
Used for: Analytics, App Functionality
Alternatives to Sunny: UV Index & SPF
Looking for apps like Sunny: UV Index & SPF? Here are 6 similar apps on the App Store. The highest rated is Sleep Habits: Supersleep (5.0/5), and all 6 are free to download.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Sunny: UV Index & SPF | – | Free | October 21, 2026 | |
| Sleep Habits: Supersleep | 5.0 / 5 (1) | Free | Aug 22, 2026 | Compare |
| Nutrie - AI Calorie Tracker | 2.6 / 5 (8) | Free | Apr 9, 2026 | Compare |
| Longevity Deck | 4.8 / 5 (10) | Free | Oct 1, 2026 | Compare |
| Steps: Workout & Pedometer | 4.6 / 5 (52) | Free | Oct 13, 2026 | Compare |
| LittleBite: AI Calorie & Live | 5.0 / 5 (4) | Free | Jul 24, 2026 | Compare |
| Moods Faster | 4.9 / 5 (26) | Free | Oct 10, 2026 | Compare |