Solar Circadian Clock vs SunSync
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Solar Circadian Clock
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This app provides the main Solar information and Circadian Rhythm for a location. This aims to provide you with healthy timings to sleep and wake up, as well as the ideal times for your meals, and activities, that is in sync with your natural rhythm. What is βCircadian Rhythmβ? Circadian rhythm is your body's natural, 24-hour internal clock. It regulates a wide range of bodily functions, such as sleep-wake cycles, hormone production, and body temperature. This internal clock is primarily influenced by light exposure, with the master clock located in a tiny region of the brain. A well-functioning circadian rhythm is essential for optimal health, as disruptions can lead to various health problems. Solar: β’ Solar Midnight β’ Twilight Start β’ Sunrise β’ Solar Noon β’ Sunset β’ Twilight End β’ Sunlight Duration β’ Daylight Duration Sleep: These sleep timings take into account the circadian rhythm and sleep cycles. It then works out the optimal timings to maximise rest. β’ Optimal Wake Up Time β’ Optimal Bedtime β’ Deepest Sleep Meals: These meal timings take into account the circadian rhythm and the body's metabolism. β’ Optimal Breakfast Time β’ Optimal Lunch Time β’ Optimal Dinner Time
SunSync
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Always tired, waking groggy, or struggling to fall asleep? The cause might be simpler than you think β 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 β all based on your real location and habits. Your body clock controls your sleep, energy, mood, and focus. SunSync helps you work with it β not against it. With SunSync you can: - Track sunlight exposure and daily light habits β 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 β 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 β 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 β 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 β 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 ads: SunSync at none against Solar Circadian Clock's shown. Solar Circadian Clock's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.6). On price and in-app purchases there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Solar Circadian Clock sells 1 one-off in-app purchase 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.
| Parameter | Solar Circadian Clock | SunSync |
|---|---|---|
| Price | Free | Free |
| Update frequency | β | Every 3 weeks |
| Ads | Yes | No β better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod β better | iPhone |
| Requires iOS | 13.0 β better | 17.6 |
| Further details β not scored | ||
| Size | 33 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Damien Devillian | Marta Rodriguez |
In-app purchases
Solar Circadian Clock
- Upgrade$3.99
SunSync
- Year3 Days trial$1.991 Year
- Lifetime$2.99
Questions
Is Solar Circadian Clock free?
Is SunSync free?
Do Solar Circadian Clock or SunSync have ads?
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