# SunAlly — Sun Exposure &VitD Enhancement > Intelligent sunlight companion for vitamin D, outdoor activity, and UV protection. (iPhone/iPad app by Hangzhou Freedom Note Artificial Intelligence Technology Co., Ltd.) - Source: https://appshunter.io/ios/app/sunally/id6740318671 (this page in markdown: same URL + `.md`) - Developer: [Hangzhou Freedom Note Artificial Intelligence Technology Co., Ltd](https://appshunter.io/developer/1705653748) - Category: Health & Fitness, Weather - Price: Free with in-app purchases - Rating: 4.33/5 from 9 App Store ratings · 10 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 58 MB - Languages: English, Japanese, Korean, Chinese, Chinese - Released: 2025-02-28 - Data updated: 2026-08-21 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/sunally/id6740318671/reviews.md ## What is SunAlly? SunAlly is your intelligent sunlight companion, helping you fully embrace the health and vitality that sunlight brings while maintaining optimal wellness. ◎ How SunAlly Helps You Through intelligent monitoring and personalized recommendations, SunAlly helps you find the perfect times for outdoor activities, making it easy to get sufficient vitamin D and enhance your overall wellbeing. Beautiful data visualizations give you clear insights into your daily sunlight intake, while smart reminders ensure you never miss the perfect outdoor moment. ◎ Core Features - Optimal outdoor activity time recommendations - Real-time UV level monitoring and protection guidance - Smart reminder system for UV risk prevention - Intelligent vitamin D synthesis estimation and trend tracking - Personalized health recommendations for continuous support - Comprehensive health data integration and cross-impact analysis - Rich collection of Apple Watch complications - HRV stress monitoring and real-time alerts ◎ Design Philosophy We believe sunlight is nature's most precious gift to humanity. SunAlly's design centers on user health, promoting the benefits of appropriate sun exposure while helping users prevent potential harm from overexposure. We strive to create a simple, practical, and user-friendly application that makes every outdoor activity more enjoyable and safer. ◎ Target Users - Urban dwellers pursuing a healthy lifestyle - Outdoor sports and fitness enthusiasts - Health-conscious wellness seekers - Anyone looking to develop regular outdoor activity habits ◎ Apple Health Integration SunAlly deeply integrates with Apple Health, recording and analyzing multiple health metrics including sunlight exposure and HRV. Paired with Apple Watch, it helps you stay informed about your body's condition and easily plan outdoor activities. ◎ Health Advisory Disclaimer The sunlight exposure duration and vitamin D synthesis estimates provided by SunAlly are for reference only. Due to individual differences and environmental variations, actual conditions may vary. This data does not constitute medical advice in any form. If you have specific concerns about outdoor activities or vitamin D supplementation, please consult a medical professional. ◎ Premium Function - Review historical health status - Weekly/monthly/yearly sunlight trend - Weekly/monthly/yearly Vitamin D trend - Extra HRV watch face cartoon character - Sunlight and UV analysis - Detailed Vitamin D supplement advice Payment will be charged to subscriber’s iTunes account at the confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Subscriber’s account will be charged for renewal within 24 hours prior to the end of the current period. Subscribers can manage their subscriptions by going to their account settings on the App Store. For technical assistance, please contact our team: Privacy Policy: https://dev.freenotetech.com/sunally/policy/ Terms of Service: https://dev.freenotetech.com/sunally/terms/ ## Key features - Optimal outdoor activity time recommendations - Real-time UV level monitoring - Smart UV risk prevention reminders - Vitamin D synthesis estimation - Personalized health recommendations - Apple Health integration - HRV stress monitoring ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium SunAlly HRV Monthly | $4.99 | per month | | Premium SunAlly HRV Yearly | $19.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Premium SunAlly HRV Lifetime | $29.99 | one-time | ## Recent user reviews (10 of 10) All indexed reviews: https://appshunter.io/ios/app/sunally/id6740318671/reviews.md ### 2/5 — Not worth the money *2026-02-07* I’m No ability to enter Theraputic light time. I do mine from 4am to 5 am which the app considers ineffective sun exposure time for vitamin D synthesis and with no ability to enter it as Theraputic. Vitamin D tracking is useless. Also no ability for sunlight tracking from Apple Watch. HRV does not update either. ### 3/5 — Won’t measure outdoor activity *2025-06-12* The app won’t measure outdoor activity and I can’t customize activity outside when it doesn’t read correctly ### 5/5 — 免费内购 *2025-05-13* 能够免费解锁会员选项就好了 ### 5/5 — The Best Sun App *2025-05-08* I downloaded about 10 different sun apps, and this is the best one for automatically tracking sun exposure using time in daylight on an Apple Watch. It calculates how much vitamin d you’re getting from the sun based on this metric. Right now, the only improvement I could see would be having the uv index be written to apple health when it notices that you are in the sun. Waiting for that feature, but enjoying the app. ### 5/5 — Great for outdoor activities *2025-05-07* Love the app. Love all the features it has all work great. Just wash pro. version was not so expensive. ### 5/5 — Useful *2025-04-10* I like this app a lot, my only request is to allow us to change the timezone, I can’t find that option in the app. ### 1/5 — 最 *2025-04-05* 了 ### 5/5 — 支持创业团队 *2025-03-10, version 1.4.0* nice app！unique and creative ideas! I love it ### 5/5 — 非常喜欢的产品！ *2025-03-02* 我前段时间因为工作压力大，有点轻度抑郁，最近一直在晒太阳，这个App配合晒太阳太适合了！ 我每天看到那个维生素胶囊满了，就特别有成就感，已经养成喜欢了 ### 1/5 — TURKİSH LANGUAGE *2025-03-01, version 1.3.0* please give us turkish language ## Frequently asked questions about SunAlly ### What is SunAlly? SunAlly is an intelligent sunlight companion designed to help users optimize their sun exposure for health benefits like vitamin D synthesis and overall well-being. It offers personalized recommendations and real-time monitoring. ### Does SunAlly have ads? No, SunAlly does not contain advertisements. The app is free to download and use, with optional premium features available through subscription. ### What are the premium features of SunAlly? Premium features include reviewing historical health status, weekly/monthly/yearly sunlight and Vitamin D trends, an extra HRV watch face character, and detailed Vitamin D supplement advice. ### How does SunAlly integrate with Apple Health? SunAlly deeply integrates with Apple Health, recording and analyzing health metrics such as sunlight exposure and HRV. This integration helps users stay informed about their body's condition and plan outdoor activities. ### What devices does SunAlly support? SunAlly is supported on both iPhone and Apple Watch, allowing for comprehensive tracking and convenient access to information. ### How often is SunAlly updated? The latest version of SunAlly is 1.23.1, and it was last updated on July 15, 2025. Updates typically occur to improve features and reliability. ### What is the age rating for SunAlly? SunAlly has an age rating of 4+, making it suitable for a wide range of users interested in health and wellness. ### Can I cancel my SunAlly subscription? Yes, subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. You can manage your subscriptions through your App Store account settings. ## Version history (last 5 releases) ### 1.23.1 — 2025-07-15 Bug fixes - Fixed the display issue of the dial component. Thanks for using SunAlly! ### 1.23.0 — 2025-07-10 Bug fixes - Fixed the display issue of the dial component. Thanks for using SunAlly! ### 1.22.0 — 2025-07-01 Bug fixes - Optimize the animation logic of sunscreen Thanks for using SunAlly! ### 1.21.1 — 2025-06-19 Bug fixes - Optimize the animation logic of sunscreen Thanks for using SunAlly! ### 1.21.0 — 2025-06-12 New features - UV page adds sunscreen reapplication capabilities - Added indicator description page to trend analysis page Bug fixes - The problem of emergency reminders not being able to pop up effectively when ultraviolet rays are high - Solved the problem of vitamin D being unable to be calculated due to the inability to obtain the address Thanks for using SunAlly! ## Apps similar to SunAlly | App | Rating | Price | Category | | --- | --- | --- | --- | | [AMood: AI Mood Monitor](https://appshunter.io/ios/app/amood-ai-mood-monitor/id6479683928) | 4.9 (91) | Free | Health & Fitness | | [Somno - AI Sleep Tracker](https://appshunter.io/ios/app/somno-ai-sleep-tracker/id6504674988) | 4.6 (26) | Free | Health & Fitness | | [Skyhi - AI Health & Fitness](https://appshunter.io/ios/app/skyhi-ai-health-and-fitness/id6479681394) | 4.7 (23) | Free | Health & Fitness | | [Moodji: Health & Mood Tracker](https://appshunter.io/ios/app/moodji-health-and-mood-tracker/id6470914506) | 4.8 (81) | Free | Health & Fitness | | [NeckGo - Relief for Your Neck](https://appshunter.io/ios/app/neckgo-relief-for-your-neck/id1660505668) | 4.7 (19) | Free | Health & Fitness | | [MarkTimes](https://appshunter.io/ios/app/marktimes/id6475532850) | 5.0 (49) | Free | Health & Fitness | --- *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 2026-08-21.*