Best apps like SunDay: Vitamin D & UV Tracker

10+ similar apps compared and reviewed

4.6 avg rating
10 free apps
Updated July 2026

SunDay is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

simply. nutrition tips

simply. nutrition tips by simply advisory LLC

that help you get healthy.
๐Ÿ’ช Health & Fitness
5.0(17 ratings)
FreeIn-App Purchases
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Get daily nutrition tips from certified nutritionists with a subscription to this app, and start your journey to a healthier lifestyle. With features like customizable notifications, saved tips, and a tip tracker, you can easily incorporate healthy habits into your daily life.

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Top Alternatives to SunDay

SunSeek: Sunlight & Vitamin D#1

SunSeek: Sunlight & Vitamin D by The Wellness Company, Inc.

Sun Exposure & Vitamin D
Editor's Choice
๐Ÿ’ช Health & Fitness
4.8๐Ÿ˜Š(133 ratings)
FreeIn-App Purchases
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Optimize your circadian rhythm and vitamin D production with personalized sunlight exposure guidance. Track real-time lux levels, receive tailored outdoor time recommendations, and use the sun compass to maximize your daily light intake for improved sleep, mood, and overall well-being.

What We Love

  • ๐Ÿš€ Excellent app design
  • ๐Ÿ‘ Motivates users to get outside
  • ๐Ÿ’ก Personalized recommendations
  • ๐Ÿš€ Clean and intuitive interface

Room to Improve

  • ๐Ÿ’ฐ Overpriced for the current feature set
  • ๐Ÿ” Lack of transparency around pricing
  • ๐Ÿ” Limited data tracking capabilities
SmarTest Vitamin D#2

SmarTest Vitamin D by Preventis GmbH

Strong Contender
๐Ÿ’ช Health & Fitness
5.0(1 ratings)
Free
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This app, paired with a home testing kit, allows you to quickly measure your vitamin D levels using your smartphone camera. It provides a step-by-step guide for a painless blood sample collection and immediate result display, helping you manage your vitamin D intake.

Vitamin D Sun Tracker - Bask#3

Vitamin D Sun Tracker - Bask by Greycloud LLC

UV Index & Exposure Timer
Worth Considering
๐Ÿ’ช Health & Fitness
4.9(9 ratings)
FreeIn-App Purchases
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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.

More apps like SunDay

4
D Minder Pro
D Minder Pro
D Minder Pro
by ontometrics
Free

Track and manage your Vitamin D intake and sun exposure. This app calculates optimal sun exposure times based on your profile and location, and integrates with Apple Health for seamless data exchange. It also provides forecasts and notifications for vitamin D generation opportunities.

Vitamin D tracking and managementApple Health integrationSun exposure calculation
๐Ÿ’ช Health & Fitness
(1.6K)
freemium
5
Sun Exposure: Time in Daylight
Sun Exposure: Time in Daylight
Sun Exposure: Time in Daylight
Keep tabs on time in the sun
Free

Track your daily time in the sun to achieve personalized goals for Vitamin D, tanning, or general well-being. Get smart guidance, exposure notifications, and forecasts to enjoy sunlight safely.

Daily sun trackingSun Sessions on iPhoneSmart sun guidance
๐Ÿ’ช Health & Fitness
(40)
freemium
6
Sunned: Vitamin D & Sun Timer
Sunned: Vitamin D & Sun Timer
Sunned: Vitamin D & Sun Timer
Vitamin D Tracker & UV Alert
Free

Monitor your vitamin D production from sun exposure and receive alerts to prevent sunburn. This app estimates your vitamin D levels and tracks supplementation, providing daily sunrise and sunset notifications.

Vitamin D generation trackingSunburn prevention alertsEstimated vitamin D level increase
๐Ÿ’ช Health & Fitness
(3)
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7
Vitamin Dโ„ข ยท UV Index
Vitamin Dโ„ข ยท UV Index
Vitamin Dโ„ข ยท UV Index
Solar IU Sunburn Skin Minder
Free

This app provides real-time UV index monitoring and personalized sun exposure recommendations to help you safely harness the sun's energy for optimal Vitamin D synthesis. It offers tailored sun protection advisories and customizable alerts for sun safety.

Real-time UV index forecastingPersonalized sun exposure recommendationsSun protection advisories
๐Ÿ’ช Health & Fitness
(1)
freemium
8
Sun Day Tracker
Sun Day Tracker
Sun Day Tracker
Track Your D
Free

Monitor your daily vitamin D absorption from sunlight exposure. This straightforward application helps you keep track of your sun-related vitamin D intake.

Track daily vitamin D intakeSunlight exposure monitoringSimple interface
๐Ÿ’ช Health & Fitness
(17)
free
9
Daylight Goals Sunlight Timer
Daylight Goals Sunlight Timer
Daylight Goals Sunlight Timer
Sun Times & UV Index Widgets
Free

Track your daily sunlight exposure and Vitamin D absorption with this app. It provides real-time weather data, sunrise/sunset notifications, and golden hour countdowns. Monitor your progress with detailed charts and stay motivated with goals and streaks.

Automatic daylight exposure trackingVitamin-D absorption estimatesSunrise and sunset notifications
๐Ÿ’ช Health & Fitness
(84)
free with in-app purchases
10
Rays: Auto Vitamin D Tracking
Rays: Auto Vitamin D Tracking
Rays: Auto Vitamin D Tracking
Auto sun exposure tracking
Free

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.

Automatic vitamin D synthesis trackingPersonalized health intelligenceSmart sun exposure recommendations
๐Ÿ’ช Health & Fitness
(7)
free with in-app purchases