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 121–140 of 1,000 ranked alternatives.
Noriyasu Kutsuzawa
Calculate shape dimensions and area
Calculate lengths, angles, and area of shapes. Select a shape from a list. Input values into text boxes linked to orange points. Adjust point positions using the NEXT button or tapping points.
Philipp Straub
Review with spaced repetition
Learn through targeted repetition and active recall. Use adaptive spaced repetition to adjust review intervals based on memory performance. Practice with multiple-choice quizzes and other modes to reinforce knowledge.
Kei Suefuji
Record and calculate averages
Record readings in the morning and evening. Automatically calculate average values for each period. Save multiple measurements without limits. Adjust readings using a slider on the Today screen. View saved measurements and averages.
mauro battisti
Play along with drum grooves and track
Play along with pre-recorded drum loops from Jazz to Rock. Practice with a virtual drummer that adjusts tempo and swing. Use the smart metronome with clave and swing regulator features.
James Styles
Learn with interactive lessons
Learn about in ALevel Chemistry with interactive lessons, practice with R-, and timed challenges to beat the professor. Review definitions, differentiate , and test knowledge through quizzes and games.
Joseph Stalin Alucious Selvaraj
Track holy days and seasonal dates
Track Holy Days and Feasts for any year. View dates for Advent, Christmas, Lent, and The Triduum. Identify start and end dates of seasons. Access information on mobile.
庆辉 宋
Practice trades on historical data
Practice trading on anonymous historical data. Select stocks, analyze charts, and make trades without real money. Track performance and review past decisions to improve trading skills.
Joakim Kungsman
Convert runs, track splits, calculate pace
Calculate running metrics including finish time, average speed, pace, and distances in both metric and imperial units. Convert values instantly between units. Display results for various race distances and formats.
Trilliarden Entertainment GmbH
Solve problems and track progress
Practice with customizable exercises and difficulty levels. Solve problems, including image-based puzzles. Track progress and set goals for improvement. Share results and compete with others.
Quackstro, LLC
Calculate and directly
Calculate time values by adding, subtracting, and multiplying and . Input time values directly without converting to decimals. Display results in and format.
Pheinex, LLC
Calculate size and performance
Calculate size for round or rectangular ductwork. Adjust airflow, diameter, width, or height using sliders. Enter values directly for precise measurements. Lock friction calculations for accurate results.
Justin Guitar Ltd
Name notes, find notes, practice chords
Learn notes with four training modes: Name The , Find A , Memory Quiz 1, and Memory Quiz 2. Identify notes on the neck, locate given notes across all positions, and recall notes based on their position or fret.
Masaharu Tsukamoto
Predict chart trends and receive alerts
ChartAI analyzes market data using its own algorithm to predict chart movements. It forecasts whether values will rise or fall within a specific timeframe. Users receive notifications about optimal times to take profits or cut losses.
Mayra M Martinez
Calculate dates and day numbers
Provides date calculations including day number lookup, date conversion from year/day number, days between dates, date addition/subtraction, and day of the week checks.
Etan Cohn
Learn languages with AI-powered mnemonics
Learn languages using AI-powered mnemonics to enhance vocabulary retention. Create custom memory associations for words. Track progress with spaced repetition and practice exercises. Export study materials and share notes with others.
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