Comparison

Teremok 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

Teremok

Features
Read full description

Why does it hurt today? Decode your weather-pain link. Teremok forecasts how today's barometric pressure, geomagnetic shifts, and 12 other environmental factors may trigger headaches, migraines, joint pain, and influence your overall wellness β€” personalized to YOUR health profile. HOW IT WORKS Teremok combines real-time data from weather services, air quality monitors, pollen trackers, and space weather observatories. It then applies your personal health profile β€” age, chronic conditions, allergies, skin type β€” to produce a score tailored specifically to you. A person with asthma and a pollen allergy will see a very different score than someone with hypertension on the same day in the same city. 13 ENVIRONMENTAL FACTORS - Air Quality Index (PM2.5, PM10, O3, NO2, SO2) - Feels-Like Temperature (Universal Thermal Climate Index) - Barometric Pressure Change (hPa per 3 hours) - Atmospheric Pressure (absolute level) - UV Index (WHO scale) - Humidity (relative air moisture) - Pollen Index (6 species: birch, alder, grass, ragweed, mugwort, olive) - Geomagnetic Kp Index (NOAA space weather) - Solar Flare Activity (X-ray flux classification) - Wind Speed (Beaufort scale) - Dewpoint (comfort threshold) - Day Length (circadian impact) - Moon Phase (sleep and mood) PERSONALIZED HEALTH PROFILE Configure your conditions for a tailored experience: - Cardiovascular (hypertension, arrhythmia) - Musculoskeletal (arthritis, joint pain) - Respiratory (asthma, COPD) - Nervous system (migraine, meteosensitivity) - Psychoemotional (mood disorders, seasonal affective) - Dermatological (eczema, photosensitivity) - Immune (allergies, autoimmune) SMART TOOLS - Exercise Window: Finds the best 2-3 hour block for outdoor activity based on UV, temperature, air quality, and precipitation. - Safe Sun Timer: Calculates minutes to skin reddening based on your Fitzpatrick skin type and current UV index. - Sleep Forecast: Tonight's sleep quality score based on temperature, humidity, geomagnetic activity, moon phase, and wind. - Alert Timeline: Hourly risk peaks across 24 hours so you can plan your day. DESIGNED FOR YOU - Today/Tomorrow toggle with 3-day forecast - Government weather alerts (via Apple WeatherKit) - Drag-and-drop factor cards β€” put what matters most on top - 5-color severity system (blue/green/amber/purple/red) - Full iPad support with 2-column layout - Dark theme optimized for readability PRIVACY FIRST - No account required β€” works immediately after download - No analytics, no ads, no tracking - All data stored locally on your device - Location used only to fetch local weather β€” never stored or shared Available in English, Russian, and Ukrainian. Developed by Dr. Volodymyr Perelyhin, MD β€” endocrinologist and clinical researcher. Learn more: universum.earth Teremok is not a medical device. It provides informational guidance based on publicly available environmental data. Always consult your healthcare provider for medical decisions. Terms of Use (EULA): https://universum.earth/apps/teremok/terms/ Privacy Policy: https://universum.earth/apps/teremok/privacy/

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

Teremok4 screens
SunSync4 screens

Verdict

The call

The clearest difference is update cadence: Teremok at every 2 days against SunSync's every 3 weeks. Teremok also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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. Teremok sells 2 in-app purchases, starting at $9.00 per year 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

Teremok ships an update every 2 days, SunSync every 3 weeks. The most recent releases landed on September 4, 2026 and September 9, 2026 respectively.

Scorecard2 real differences Β· 4 level
Teremok versus SunSync: the parameters behind the verdict, then further details
ParameterTeremokSunSync
PriceFreeFree
Update frequencyEvery 2 days β€” betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, Apple Watch β€” betteriPhone
Requires iOS18.017.6 β€” better
Further details β€” not scored
Size343 MB22 MB
Age rating4+4+
DeveloperVolodymyr PerelyhinMarta Rodriguez

In-app purchases

2 purchases

Teremok

Subscriptions1
  • Teremok Pro Annual$9.001 Year
One-time1
  • Teremok Pro Lifetime$18.00
2 purchases

SunSync

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

Questions

Is Teremok free?
Teremok is free to download, with in-app purchases available.
Is SunSync free?
SunSync is free to download, with in-app purchases available.
Do Teremok or SunSync have ads?
Neither Teremok nor SunSync shows ads.
Which is updated more often, Teremok or SunSync?
Teremok ships an update every 2 days, and SunSync every 3 weeks. Most recently, Teremok was updated on September 4, 2026 and SunSync on September 9, 2026.

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