Master the 'Human Calendar' trick to mentally calculate the day of the week for any date. This app offers tutorials, guided practice, and training games to help you learn and perfect this skill.






201+ iOS apps curated and reviewed
Looking for free weekdaywidget apps? 18 of our 201+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.






Master the 'Human Calendar' trick to mentally calculate the day of the week for any date. This app offers tutorials, guided practice, and training games to help you learn and perfect this skill.





Easily calculate the duration between two dates, with or without accounting for the time of day. You can also add or subtract various time units from a specific date. The results are automatically converted into multiple units for your convenience.





Discover historical events, holidays, and astronomical data for any given day. This app provides daily insights into history, sunrise/sunset times, moon phases, and planetary alignments without requiring an internet connection.


Track important dates and count down to your next big event. This app allows you to set custom events with personalized backgrounds and receive daily notifications. Keep your countdowns private with PIN protection.


Calculate your precise age in various units of time, from years down to seconds. Save ages, find remaining time until your next birthday, and use it for various counting needs like birthdays or pets.


Easily add or subtract time values including hours, minutes, and seconds. Calculate durations with days, weeks, months, and years. This tool simplifies time-based calculations for various needs.


Access calendar information directly from your home or lock screen with customizable widgets. Displays analog clocks, full date and time with seconds, day of the month, week of the year, and time zone. Offers large time display and supports Dark Mode.


Access your favorite social media feeds and essential tools directly from your iPhone's lock screen or while using other apps. This app provides quick access to Twitter, Instagram, a calculator, and a timer, with more widgets planned.


Enhance your iOS experience with a collection of beautiful and functional widgets. Access quick actions, tools like a calculator and currency converter, and system information. Unlock advanced features and more customization options with a premium upgrade.


This utility app offers a clean and intuitive interface for performing calculations. It prioritizes a user-friendly design with large buttons and a clear display for quick and efficient use.


This app helps you organize your day with customizable panels for weather, tasks, news, and more. Stay updated on your commute, calendar, and stocks. Personalize your experience with various themes to start your day efficiently.


Easily calculate the difference between dates, add or subtract days, and create custom countdowns. Personalize your workweek and skip specific dates for accurate workday calculations. Track events with home screen widgets and receive timely notifications.


Calculate the duration of a presidential term, including elapsed days, remaining days, and future projections. It also functions as a general date calculator for any two dates or time periods.


Enhance your iPhone's home screen with compact calendar widgets. View upcoming days or today's/tomorrow's events in a scrollable, customizable format. Integrates with other apps for seamless event management.


An app designed to streamline work hours calculations, helping users track their time with precision. Simplify your scheduling and stay organized effortlessly with Time Calculator⁺.


Display your cherished photos directly on your iPhone and iPad Home Screen. Easily create personalized widgets from your camera roll to keep meaningful moments, like family and travel memories, always in view. Enjoy a clutter-free and personal Home Screen experience.


This app offers a comprehensive suite of tools for calculating and manipulating dates and times. It can determine time differences, calculate workdays, add or subtract time intervals, and convert between various time units. It also includes features for date ranging, time zone conversions, age calculation, and even a unique time travel function.


Track upcoming special moments with customizable countdowns. Visualize your events with beautiful imagery and access them directly from your home or lock screen. Never forget important dates like birthdays or anniversaries again.


Display the current time and date directly on your home screen with this simple widget. Easily track time in different cities and time zones to stay connected globally.


Customize your phone's home screen with dynamic widgets. Add clocks, calendars, photos, and weather information. Choose from a wide selection of themes, wallpapers, and icons, or create your own unique widget designs.