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

194+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our rsun day list covers 194+ iPhone apps updated through June 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 4.6★ (26) | No | No | Aug 2026 | |
| 2 | Free | 4.8★ (1.3K) | No | No | Aug 2026 | |
| 3 | Free | 4.7★ (930) | Yes | No | Jul 2026 | |
| 4 | Free | 4.8★ (572) | Yes | No | Aug 2026 | |
| 5 | Free | 4.9★ (186K) | No | Yes | Aug 2026 | |
| 6 | Free | 4.8★ (19K) | No | Yes | Aug 2026 | |
| 7 | Free | 4.7★ (5.9K) | No | Yes | Aug 2026 | |
| 8 | Free | 4.7★ (301) | Yes | No | Aug 2026 |

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






Create unique and personalized Mother's Day greetings with custom cards, messages, and quotes. Add personal photos and send heartfelt wishes to make your mom feel special.






Easily send heartfelt wishes and greetings for any occasion. Explore a vast collection of images, quotes, and messages for daily, special, and religious festivals. Never miss a chance to show you care.


Send festive greetings and wishes for Independence Day with a variety of e-cards, GIFs, quotes, and photo frames. Easily share, copy, or download content to celebrate the 4th of July.


This app helps you track your sobriety, build new habits, and connect with a supportive community. Visualize your progress, remember your reasons for quitting, and analyze triggers to stay motivated on your recovery journey.


Break free from bad habits with this tracker. Create custom counters for any vice, like smoking, and visualize your progress. Stay motivated by seeing how long you've gone without giving in, helping you achieve your goals.


Discover over 2,000 holidays, celebrations, and observances with daily reminders and a home screen widget. Find inspiration for conversations, cooking, and never miss a chance to celebrate something new.


Easily celebrate mothers day with a countdown, custom cards, photo frames, and heartfelt quotes. Express your love and appreciation with a variety of greetings and wallpapers. This app simplifies sending warm wishes for this special occasion.


Plan outdoor activities and photography sessions with precise sunrise, sunset, and twilight times. Utilize AR mode and map overlays to find optimal lighting, and set customizable alarms for key solar events. Widgets provide at-a-glance information for seamless integration into your day.


Discover and celebrate over 1,500 unique national days, weeks, and months. This app provides monthly calendars, engaging videos, podcasts, and recipes to help you find fun ways to mark every occasion.


This app helps you track name days for yourself and your contacts. It offers daily notifications, a search function, and displays national holidays. You can also view names by day or in a list format, and it supports different countries.


This app offers advanced weather forecasting with over 50 detailed maps and 15 weather models, including live radar, satellite imagery, and hurricane tracking. It provides customizable alerts for storms, wind, and snow, making it ideal for outdoor activities and aviation.


Achieve your desired tan faster with personalized routines based on your local UV index. This app helps you prevent sunburn and minimize sun exposure risks. Advanced features for custom routines and shade achievement require a subscription.


Send heartfelt Father's Day messages with a variety of e-cards, GIFs, quotes, and photo frames. Easily share, copy, or download your chosen greetings to honor paternal bonds.


Explore historical events, notable births, deaths, and recurring holidays for any specific date. Save your favorite discoveries and share them with friends. Available on Apple Watch and iPhone.


This app provides comprehensive real-time and reference information about the Moon, including phases, rise/set times, and astrological data. It also tracks the Sun and offers cultural insights into lunar cycles for planning activities and understanding its influence.


Track the sun's position, movements, and shadows with this AR-powered tool. Analyze sunlight, visualize shadow movement in real-time, and get precise solar event timings. Ideal for creators and outdoor enthusiasts.


This app helps you manage tasks, schedule events, and build habits. It offers cross-device synchronization, multiple reminders, and collaboration features. Stay organized and boost productivity with its comprehensive planning tools.


This comprehensive toolkit helps manage time, dates, and schedules with various calculators. Track work hours, plan shifts, convert time formats, and calculate differences between dates. Ideal for professionals, freelancers, and everyday users needing precise time management.


Easily plan your next trip by finding the best prices on flights, hotels, and rental cars. Compare deals from numerous providers with no hidden fees or booking charges. Discover new destinations and book with confidence.