Comparison

DayLight | Sunlight Planner vs SunSync

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

DayLight | Sunlight Planner

Read full description

Feeling a bit "off"? It might be a lack of sunlight. DayLight checks the weather forecast for you and lets you know exactly when to go outside, saying, "It's a perfect time for a walk!" It predicts the best time to get sunlight based on weather and UV conditions, allowing you to record your walks as "SunPt" (Sunlight Points). Features: ・Predicts and notifies you of the best times to get sunlight. ・Tracks your walk time with a timer and visualizes it as SunPt. ・Supports habit building with streaks and weekly charts. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

SunSync

Features
Read full description

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

DayLight | Sunlight Planner4 screens
SunSync4 screens

Verdict

The call

The clearest difference is update cadence: DayLight | Sunlight Planner at every 2 days against SunSync's every 3 weeks. On price, ads, in-app purchases and device support 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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. DayLight | Sunlight Planner sells 2 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.

UpkeepUpdate frequency

DayLight | Sunlight Planner ships an update every 2 days, SunSync every 3 weeks. The most recent releases landed on October 5, 2026 and October 11, 2026 respectively.

Scorecard1 real difference Β· 5 level
DayLight | Sunlight Planner versus SunSync: the parameters behind the verdict, then further details
ParameterDayLight | Sunlight PlannerSunSync
PriceFreeFree
Update frequencyEvery 2 days β€” betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone
Requires iOS17.617.6
Further details β€” not scored
Size14 MB22 MB
Age rating4+4+
Developersota kidawaraMarta Rodriguez

In-app purchases

2 purchases

DayLight | Sunlight Planner

Subscriptions2
  • DayLight Pro$2.991 Month
  • DayLight Pro7 Days trial$19.991 Year
2 purchases

SunSync

Subscriptions1
  • Year3 Days trial$1.991 Year
One-time1
  • Lifetime$2.99

Questions

Is DayLight | Sunlight Planner free?
DayLight | Sunlight Planner is free to download, with in-app purchases available.
Is SunSync free?
SunSync is free to download, with in-app purchases available.
Do DayLight | Sunlight Planner or SunSync have ads?
Neither DayLight | Sunlight Planner nor SunSync shows ads.
Which is updated more often, DayLight | Sunlight Planner or SunSync?
DayLight | Sunlight Planner ships an update every 2 days, and SunSync every 3 weeks. Most recently, DayLight | Sunlight Planner was updated on October 5, 2026 and SunSync on October 11, 2026.

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