Practice dates and track your progress
Learn to calculate the day of the week for any between 1800 and 2200 using the Doomsday Algorithm. Track progress with personal times. Compare results with calculated values. Save custom mnemonics for special dates in the Doomsday List.
Showing 1–20 of 1,000 ranked alternatives.
Jasper Murphy
Calculate weekdays instantly
Learn mental weekday calculation with text and video tutorials. Practice using Guided Solve mode for step-by-step training. Test skills with in- challenges. View calendar dates and calculate corresponding weekdays instantly.
Bjoern Bartels
Celebrate anniversaries with custom dates and notifications
Track milestones by showing how long you and your partner have been together. Create unique anniversaries like "the 333rd day" or "the 50th month". Customize with a photo of you and your partner. Enable push notifications for special dates.
Dylan Burton
Calculate historical prices and convert to today's
Calculate historical currency values from 1800 to 2025. Convert prices using 22 currencies including US Dollar, Euro, British Pound, and others. Adjust for and view adjusted values over time.
Hendrik Folkerts
Devices instantly
Locate devices using radar and distance score features. Check nearby devices and view calculated distances. AirPods, Apple Pencil, iPhone, iPad, Apple Watch, and other compatible devices.
Polywise, Inc.
Learn key concepts with guides
Learn essential topics in psychology, philosophy, history, finance, leadership, business, health, science, and technology. View elegant visuals to understand complex concepts. Take daily quizzes to reinforce .
Tevfik Yucek
Track prayer times and Qibla direction
Track prayer times and Qibla direction based on GPS location. Set notifications for prayer times. View accurate prayer schedules and Qibla compass for navigation.
LEOIO INC.
Find qibla direction and calculate prayer times
Determine qibla direction based on location. Calculate prayer times using location-based calculations. View calendar with event recording and date navigation in multiple languages. Set reminders for prayer times and events.
Guitar Tabs LLC
Practice rhythms with metronome beats
Practice rhythmic exercises with metronome support to improve timing and sight reading. Repeat custom rhythms, test skill levels, and track progress. Sync with a teacher or practice independently for structured training sessions.
DEALER BUST TIME LLC (WA)
Practice and play
Practice techniques with interactive drills and quizzes. Track progress with detailed stats and performance analysis. Learn strategies including basic plays and advanced systems. Simulate real casino scenarios with adjustable difficulty levels.
Lominat LLC
Type Fidel characters with double tap
Kal enables typing of Fidel characters with double tap or slide gestures. It includes an advanced word prediction algorithm for Amharic dictionary to enhance typing speed. Users can access multiple keys through gesture inputs.
Volker Vocking
Track sunrise, sunset, and twilight times
Calculate sunrise, sunset, moonrise, and moonset times for your location. Track solar noon, day length, and equation of time. View declination, twilight phases, and azimuth angles. Monitor seasonal dates, solstices, and equinoxes.
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