Comparison

SunMax vs NutriOS

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

Head to head
About

SunMax

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SunMax turns sunlight into science-based guidance for vitamin D and safer sun exposure. Using real-time UV data, a personalized profile, and a multi-factor model built around your skin type, exposed skin, sun angle, session timing, and weather conditions, SunMax helps you plan outdoor time more intentionally. KEY FEATURES Free features: β€’ Personalized setup Create your profile, take the Fitzpatrick skin quiz, and tailor guidance to your body and skin type. β€’ Vitamin D session tracking Start live sessions and watch your estimated vitamin D and burn-risk guidance update as conditions change. Daily limit of 20 minutes. β€’ Real-time UV + weather intelligence View current UV, hourly trends, and forecast context to choose better times for sun exposure. β€’ Apple Health sync Connect Apple Health to autofill your height, weight, and body metrics, import last night's sleep for your morning check-in, and save your sun-session vitamin D and time in daylight back to Health. Optional and off until you turn it on. β€’ Daily goals, supplement logging, and reminders Track sunlight and supplement intake together so you stay consistent with your routine. β€’ Account benefits (free) Create a free account to save and sync your data across devices, and customize avatar clothing for more accurate exposure estimates. β€’ Limited past session logging Add up to 1 past session per day to backfill your history. Premium subscription features: β€’ Unlimited vitamin D sessions Track as many sessions as you want with no daily time limits. β€’ Unlimited past session logging Add as many past sessions as you need to complete your vitamin D history. β€’ Morning and evening light routines Track circadian rhythm exposure separately from vitamin D sessions. β€’ Wellbeing insights and correlations See how your sun exposure affects your sleep, mood, and energy throughout the day β€” enriched by sleep data from Apple Health. β€’ Advanced analytics and longer-range trends View weekly and monthly progress with historical data and detailed insights. β€’ Streak freeze protection Protect your daily streak with monthly freeze days. Subscription details: SunMax offers optional auto-renewing subscriptions for Premium features, including monthly, yearly, and lifetime options where available. A 7-day free trial may be offered to eligible new subscribers. Built for walks, workouts, beach days, and everyday time outdoors, SunMax helps you use sunlight more intentionally. Important: SunMax provides estimates and guidance, not medical advice. Terms of Service: https://www.sunmaxapp.com/terms-of-service/ Privacy Policy: https://www.sunmaxapp.com/privacy-policy/

About

NutriOS

Features
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NutriOS Plus β€” Auto-Renewable Subscription Monthly: R$ 39.99 per month Annual: R$ 299.90 per year Payment will be charged to your Apple ID account upon confirmation of purchase. Your subscription renews automatically for the same period unless it is canceled at least 24 hours before the end of the current subscription period. Renewal charges are applied within 24 hours before the end of the current subscription period. You can manage or cancel your subscription at Settings > Apple ID > Subscriptions. Terms of Use: https://app.nutri-os.fit/terms Privacy Policy: https://app.nutri-os.fit/privacy

Screenshots

SunMax4 screens
NutriOS4 screens

Verdict

The call

SunMax and NutriOS are too close to call on the numbers: across 6 compared parameters β€” price, update cadence, ads and in-app purchases among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. SunMax sells 3 in-app purchases, starting at $4.99 per month and NutriOS sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

SunMax ships an update every 5 days, NutriOS weekly. The most recent releases landed on October 3, 2026 and October 19, 2026 respectively.

ScorecardNo meaningful differences
SunMax versus NutriOS: the parameters behind the verdict, then further details
ParameterSunMaxNutriOS
PriceFreeFree
Update frequencyEvery 5 days β€” betterWeekly
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 β€” better16.4
Further details β€” not scored
Size27 MB69 MB
Age rating4+4+
DeveloperOliver StojcevskiQuaresma Tech

In-app purchases

3 purchases

SunMax

Subscriptions2
  • Premium Monthly7 Days trial$4.991 Month
  • Premium Yearly7 Days trial$39.991 Year
One-time1
  • SunMax Premium Lifetime$69.99
2 purchases

NutriOS

Subscriptions2
  • NutriOS Plus Mensal$5.991 Month
  • NutriOS Plus Anual$49.991 Year

Questions

Is SunMax free?
SunMax is free to download, with in-app purchases available.
Is NutriOS free?
NutriOS is free to download, with in-app purchases available.
Do SunMax or NutriOS have ads?
Neither SunMax nor NutriOS shows ads.
Which is updated more often, SunMax or NutriOS?
SunMax ships an update every 5 days, and NutriOS weekly. Most recently, SunMax was updated on October 3, 2026 and NutriOS on October 19, 2026.

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