Comparison

SunSync vs SuppLab

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

Head to head
About

SunSync

Features
Read full description

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

About

SuppLab

Features
Read full description

SuppLab is a supplement tracker for people who take a few things every day and want to know two things: what it all costs, and whether any of it is making a difference. TRACK YOUR STACK • Log every supplement and vitamin you take, with timing and on/off cycles • Daily reminders that fit your routine — morning or evening • Monthly and yearly cost, so you always know what your stack costs • Stack check: flags pairs that shouldn't be taken together (zinc + iron, and more) • Label scan: point the camera at a label to add what's in it A LIBRARY YOU CAN CHECK • 111 supplements, from magnesium and creatine to ashwagandha and omega-3 • Evidence graded strong, moderate or limited — every reviewed entry links its PubMed sources • What to expect and when, cautions, and drug interactions COMPARE TAKE-DAYS WITH SKIP-DAYS • Pick one supplement and one primary measure: sleep, HRV, resting heart rate, energy, focus or mood • SuppLab builds a randomized 14–28 day take/skip schedule and reminds you each day • Sleep, HRV and resting heart rate come from Apple Health; energy, focus and mood take a 10-second check-in • At the end you see the average difference between take-days and skip-days with its uncertainty — or a plain "not enough data" when there isn't enough This is a personal comparison, not a clinical trial. It can't prove cause and effect, and it is not medical advice. LONG-TERM VIEW • Your last 28 days of Health data compared with the baseline you started from • Export everything as CSV to share with your doctor PRIVATE BY DESIGN • No account, no sign-up, no server. Everything stays on your iPhone. FREE AND PREMIUM The library, label scan, stack, reminders and cost tracking are free. Take/skip comparisons, result reports and the long-term view are part of SuppLab Premium (annual with a free trial, or weekly). SuppLab is an educational tool for healthy adults. Consult a healthcare professional before starting or stopping any supplement. Terms of Use (EULA): https://umay.dev/supplab-terms-of-use.html Privacy Policy: https://umay.dev/supplab-privacy-policy.html

Screenshots

SunSync4 screens
SuppLab4 screens

Verdict

The call

The clearest difference is update cadence: SunSync at every 3 weeks against SuppLab's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

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

Both are free to download. SunSync sells 2 in-app purchases, starting at $1.99 per year and SuppLab sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

SunSync ships an update every 3 weeks, SuppLab every 2 months. The most recent releases landed on September 25, 2026 and October 13, 2026 respectively.

Scorecard1 real difference Ā· 5 level
SunSync versus SuppLab: the parameters behind the verdict, then further details
ParameterSunSyncSuppLab
PriceFreeFree
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone
Requires iOS17.617.0 — better
Further details — not scored
Size22 MB4 MB
Age rating4+12+
DeveloperMarta RodriguezBugra Gunay

In-app purchases

2 purchases

SunSync

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

SuppLab

Subscriptions2
  • Weekly Premium$4.997 Days
  • Annual Premium7 Days trial$49.991 Year

Questions

Is SunSync free?
SunSync is free to download, with in-app purchases available.
Is SuppLab free?
SuppLab is free to download, with in-app purchases available.
Do SunSync or SuppLab have ads?
Neither SunSync nor SuppLab shows ads.
Which is updated more often, SunSync or SuppLab?
SunSync ships an update every 3 weeks, and SuppLab every 2 months. Most recently, SunSync was updated on September 25, 2026 and SuppLab on October 13, 2026.

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