# Sundex: UV Index & Sun Tanning — Vitamin D & Tan Glow Tracker > Smart sun companion for UV index, vitamin D, and safe tanning. (iPhone/iPad app by Ahmet Giray Ucar.) - Source: https://appshunter.io/ios/app/sundex-uv-index-and-sun-tanning/id6745428343 (this page in markdown: same URL + `.md`) - Developer: [Ahmet Giray Ucar](https://appshunter.io/developer/1583246836) - Category: Weather, Lifestyle - Price: Free with in-app purchases - Rating: 4.30/5 from 8 App Store ratings - Age rating: 4+ - Requires: iOS 16.0 · 7 MB - Languages: Turkish, French (France), Chinese (Simplified, China), Chinese (Traditional, Taiwan), American English, Brazilian Portuguese, Latin American Spanish, Vietnamese, Arabic, Korean - Released: 2025-05-08 - Data updated: 2026-08-17 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/sundex-uv-index-and-sun-tanning/id6745428343/reviews.md ## What is Sundex? Sundex is your smart sun companion — designed to help you make the most of sunlight safely and effectively. Whether you're trying to boost your vitamin D levels, tan responsibly, or avoid sun damage, Sundex provides real-time data and personalized insights based on your skin type and location. With live UV index tracking, a smart vitamin D calculator, and guidance on the best times to be in the sun, Sundex empowers you to take control of your sun exposure. No more guessing — just scientifically informed decisions for your health and lifestyle. Key Features: • Real-time UV index based on your current or selected location • Personalized sun exposure windows for safe and effective tanning • Daily and hourly UV forecasts to help plan your outdoor activities • Skin type analysis to offer tailored sun safety tips • Vitamin D calculator that estimates optimal sun time based on conditions • Global UV map to explore sun intensity worldwide • Simple and intuitive design for a smooth experience Whether you're at the beach, walking in the city, or just relaxing outdoors, Sundex gives you the tools to protect your skin and optimize your time in the sun. Use the app to balance your need for vitamin D with your skin’s safety, and enjoy a healthier relationship with the sun every day. Stay informed. Stay safe. Get your glow — with Sundex. Terms of Use: https://docs.google.com/document/d/15_WFBy1DtDYfeLudDe5gIRDil02aflGiYTrmSvufnsc/edit?usp=sharing ## Key features - Real-time UV index tracking - Personalized sun exposure windows - Daily and hourly UV forecasts - Skin type analysis - Vitamin D calculator - Global UV map ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | UV Index Monthly | $12.99 | per month | | UV Index Weekly | $4.99 | per 7 days | | UV Index Discounted Weekly | $3.99 | per 7 days | | UV Index Monthly | $29.99 | per year | ## Frequently asked questions about Sundex ### What is Sundex? Sundex is a smart sun companion designed to help you make the most of sunlight safely and effectively. It provides real-time UV index tracking, a vitamin D calculator, and guidance on optimal sun exposure times based on your skin type and location. ### How does Sundex calculate vitamin D? Sundex features a vitamin D calculator that estimates your optimal sun time based on current UV conditions, your location, and your skin type. This helps you balance vitamin D production with sun safety. ### Can I use Sundex for tanning? Yes, Sundex offers personalized sun exposure windows for safe and effective tanning. It provides daily and hourly UV forecasts to help you plan your outdoor activities and tanning sessions responsibly. ### What skin types does Sundex support? Sundex includes a skin type analysis feature to offer tailored sun safety tips. This personalization helps users understand their individual sun sensitivity and adjust their exposure accordingly. ### Does Sundex have ads? No, Sundex does not contain advertisements. The app focuses on providing a clean and intuitive user experience without interruptions from ads. ### What are the subscription options for Sundex? Sundex offers several subscription plans, including 'UV Index Weekly' with a 3-day free trial for $4.99/week, a discounted weekly option for $3.99/week, a monthly plan for $12.99/month, and an annual plan for $29.99/year. ### On what devices can I use Sundex? Sundex is available for use on both iPhone and Apple Watch devices. This allows for convenient access to UV index and sun safety information on the go. ### How often is Sundex updated? Sundex was last updated on September 19, 2025, with version 2.0. The app is actively maintained, suggesting regular updates for features and performance improvements. ## Version history (last 5 releases) ### 2.0 — 2025-09-19 To provide the best experience in our app, we regularly release updates. In this update, visual improvements have been made. With brand-new Vitamin D and forecast screens, everything is now much clearer and more functional. Skin types are now more diverse and comprehensive. ### 1.4 — 2025-07-11 To provide the best experience, we make regular updates. In this update: Visual improvements have been made. ### 1.3 — 2025-05-27 We regularly update the app to provide you with the best experience. In this update: Visual improvements have been made. watchOS support has been added — you can now easily view data directly from your Apple Watch. ### 1.2 — 2025-05-16 We regularly update the app to provide you with the best experience. In this update: Visual improvements have been made. ### 1.0 — 2025-05-08 No release notes. ## Apps similar to Sundex | App | Rating | Price | Category | | --- | --- | --- | --- | | [TanPlan: Tanning App and UV](https://appshunter.io/ios/app/tanplan-tanning-app-and-uv/id6746389798) | 4.1 (8) | Free | Weather | | [UV Index Widget & Forecast](https://appshunter.io/ios/app/uv-index-widget-and-forecast/id6745766137) | 4.7 (52) | Free | Weather | | [TanLines - Tanning Assistant](https://appshunter.io/ios/app/tanlines-tanning-assistant/id6745722097) | 4.6 (42) | Free | Weather | | [Beam Tanning - Safe Sun](https://appshunter.io/ios/app/beam-tanning-safe-sun/id6587569044) | 4.7 (26) | Free | Weather | | [UV Tan: Tanning & Sun Tracker](https://appshunter.io/ios/app/uv-tan-tanning-and-sun-tracker/id6743985615) | 4.6 (34) | Free | Weather | | [Glowy Tanning - Sunglow](https://appshunter.io/ios/app/glowy-tanning-sunglow/id6747330836) | 4.2 (5) | Free | Weather | ## More apps by Ahmet Giray Ucar - [Valorant Crosshair - Custom X](https://appshunter.io/ios/app/valorant-crosshair-custom-x/id1583246834) - [Case Opening for Valorant](https://appshunter.io/ios/app/case-opening-for-valorant/id1597135390) - [Case Simulator for Valorant](https://appshunter.io/ios/app/case-simulator-for-valorant/id1661473901) - [Financy Manager](https://appshunter.io/ios/app/financy-manager/id6443679954) - [MapZone-Location Based Alarm](https://appshunter.io/ios/app/mapzone-location-based-alarm/id6443994252) - [ReadMyDoc: OCR Reader Scanner](https://appshunter.io/ios/app/readmydoc-ocr-reader-scanner/id6446174780) All apps by Ahmet Giray Ucar: https://appshunter.io/developer/1583246836 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-17.*