Best RayDay alternatives: apps like RayDay: Vitamin D Tracker

8+ similar apps compared and reviewed

4.8 avg rating

8 free apps

Updated October 2026

RayDay: Vitamin D Tracker

Jakub Laszczyk

💪 Health & Fitness

☀️ Weather

RayDay is great, but it's not the only option. Explore 8+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to RayDay

Vitamin D Window Widget by Airhopping, SL

Vitamin D Availability Window

Editor's Choice

💪 Health & Fitness

5.0(2 ratings)

Free

This app displays the optimal times of day for natural vitamin D production based on your location and the sun's elevation. It offers real-time sun schedules, smart widgets for home screen access, and notifications to help you maximize your sun exposure.

Rays: Auto Vitamin D Tracking by Rays Health Technologies LLC

Auto sun exposure tracking

Strong Contender

💪 Health & Fitness

4.4(7 ratings)

FreeIn-App Purchases

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Automatically tracks your body's vitamin D synthesis from sun exposure. Get personalized recommendations for optimal timing and duration to maintain energy, mood, and skin health year-round without manual logging.

SunLove - UV Index & Tanning by Kevin Galoa

AI Skin Check & Tan Safety

Worth Considering

💪 Health & Fitness

0.0(0 ratings)

FreeIn-App Purchases

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More apps like RayDay

Vitamin D Sun Tracker - Bask

UV Index & Exposure Timer

Free

This app estimates your Vitamin D intake from sun exposure and supplements. It provides real-time UV index, weather, and personalized guidance on optimal sun times and duration to prevent sunburn. Track your progress with historical data and insights.

Real-time Vitamin D estimatesLive UV Index and weather integrationPersonalized sun timer with sunburn guidance

Healthy sun exposure time

Sunshine Pal :VitaminD Tracker

Sunscreen Timer, SPF & UV

Free

Effortlessly track your daily natural light exposure to optimize vitamin D production and improve sleep. Get personalized safe sun timers and daily goals to build healthy outdoor habits.

Automatic Apple Watch trackingVitamin D estimationPersonalized safe sun timer

💪 Health & Fitness

(7)

free with in-app purchases

Compare with RayDay

Vitamin D Sun Tracker & UV

UV Index, Sunburn & SPF Timer

Free

This app personalizes your sun exposure to optimize vitamin D production and prevent sunburn. It uses your location, skin type, and real-time atmospheric data to determine the best times to be in the sun and when to cover up. Integrates with Apple Health and Apple Watch for seamless tracking.

Personalized vitamin D windowsReal-time UV index with atmospheric dataSkin type adjustments

💪 Health & Fitness

(16)

free with in-app purchases

Compare with RayDay

Sky Dose: Vitamin D Tracker

Sun, UV & vitamin D tracker