SunDose! vs SunSync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SunDose!
This app helps you establish a consistent morning sunlight habit to improve sleep, mood, and energy. It offers personalized goals, streak tracking, and educational content, with premium features for advanced health metrics and AI insights.
- Personalized daily sunlight goals
- Streak tracking for consistency
- Detailed progress visualization
- Educational content on sunlight benefits
- Reminders for habit maintenance
- Vitamin D and sleep optimization tracking
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Harness the Power of Morning Sunlight Sundose! makes it easy to build a consistent morning sunlight habit - one of the most powerful yet overlooked health practices. Just 10-30 minutes of morning sunlight can transform your sleep, mood, and energy levels. Benefits of Morning Sunlight: • Regulate your circadian rhythm for better sleep • Boost your mood and energy levels • Improve focus and mental clarity • Support vitamin D production • Enhance overall well-being Key Features: • Simple, beautiful sunlight tracking • Personalized daily goals based on your location • Streak tracking to build consistency • Detailed statistics and progress visualization • Educational content on sunlight benefits • Reminders to help maintain your habit Premium Features: • Key Health Metrics: Track Vitamin D Score, Sleep Optimization, and Consistency • Personalized Daily Plan: Optimal morning & evening light windows with weather & UV info • AI-Powered Insights: Custom analysis and tips based on your sunlight patterns Based on Science: Sundose! incorporates research on circadian biology and sunlight exposure to help you optimize your daily routine for better health outcomes. Download Sundose! today and make morning sunlight a cornerstone of your wellness routine! Privacy Focused: Your health data stays private. Location data is only used to provide accurate sunlight recommendations. Terms of Use (EULA) URL: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy URL: https://www.privacypolicies.com/live/55054f53-fa7c-4f19-bb6d-f407d8c04c83
SunSync
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Always tired, waking groggy, or struggling to fall asleep? The cause might be simpler than you think — your morning light routine. SunSync syncs your day to the sun. Track sunlight exposure, estimate your vitamin D intake, and get personalized circadian rhythm guidance — all based on your real location and habits. Your body clock controls your sleep, energy, mood, and focus. SunSync helps you work with it — not against it. With SunSync you can: - Track sunlight exposure and daily light habits — know when you've hit your target - Estimate vitamin D from sun exposure based on your skin type and location - Log supplements and monitor your total daily intake - Follow personalized circadian recommendations for your schedule - Discover your best sunlight windows — and when to avoid the UV index - Build routines to improve sleep and melatonin production naturally - Set smart reminders for sunrise, sunset, and wind-down time - Add a home screen widget — see your vitamin D window at a glance, without opening the app - View history and long-term trends to see your progress Built for the biohacking community — and anyone who just wants to feel better. Whether you're optimizing for performance or simply tired of being tired, SunSync gives you the sunlight data your wellness routine has been missing. Vitamin D tracking, body clock alignment, supplement logging, and a home screen widget showing your vitamin D window — in one app. Disclaimer: SunSync provides estimates and general wellness guidance. It is not a medical device and does not replace professional medical advice. Terms: https://martarodriguezm.github.io/SunSyncLegal/terms.html Privacy Policy: https://martarodriguezm.github.io/SunSyncLegal/privacy.html
Screenshots
Verdict
The clearest difference is update cadence: SunDose! at every 4 days against SunSync's every 3 weeks. SunDose! also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.6). On price, ads and in-app purchases 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. SunDose! sells 3 in-app purchases, starting at $2.99 per month and SunSync sells 2 in-app purchases, starting at $1.99 per year. Whichever you choose, the download price is not the number that matters.
SunDose! ships an update every 4 days, SunSync every 3 weeks. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.
| Parameter | SunDose! | SunSync |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 4 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.6 |
| Further details — not scored | ||
| Size | 37 MB | 22 MB |
| Age rating | 17+ | 4+ |
| Developer | Prispa Solutions LLC | Marta Rodriguez |
In-app purchases
SunDose!
- Unlimited access7 Days trial$2.991 Month
- Unlimited access7 Days trial$29.991 Year
- Unlimited access$69.99
SunSync
- Year3 Days trial$1.991 Year
- Lifetime$2.99









