Showing 21–40 of 1,000 ranked alternatives.
Saltuk Emre Gul
Solve riddles and unlock
Solve seasonal-themed with 25 riddles per season. Each puzzle uses unique logic requiring critical thinking. Features include seasonal color themes, varying difficulty levels, and classic puzzle types like Sudoku and Sokoban.
Mad Harmony Inc
Play, record, and learn
Learn and with interactive lessons and visual diagrams. Practice with metronome and tuner tools. Explore music theory concepts and compose original songs. Track progress and set practice goals. Sync with other devices for continued learning.
Yakov Manshin
View and read explanations
View images and accompanying explanations from NASA’s Astronomy Picture of the Day. Save favorite photos to a personal collection. Access the full APOD archive dating back over 30 years. New images are available daily around midnight ET.
Ensemble Education, Inc.
Sing and tune with real-time feedback
Helps users improve musical ear through exercises that evaluate pitch and intervals. It includes an on-screen tuner, detailed pitch graphs, and modes for listening and testing.
The Ohio State University
Track buses, view schedules, and access campus
Access real-time bus tracking, class schedules, and grades. View campus building directories and parking garage capacities. Check BuckID account balances and transaction history.
Peter Leary
Track ISS passes and live streams
View upcoming ISS passes and detailed pass information. Track next pass countdown and receive notifications. Share pass details easily. Access past and future ISS trajectories. Watch live NASA ISS streams. No cost.
Sacred Acoustics LLC
Listen to sound recordings
Listen to guided soundscapes to reduce mental chatter and enhance presence. Access intuitive insights and spiritual guidance. Improve wellness and promote relaxation for better sleep. Track progress in inner awareness and healing.
Filmbook, LLC
Practice quizzes and track progress
Take unlimited timed multiple-choice quizzes on cosmetology topics. Practice with randomized questions from a large question bank. Track progress and review answers for each quiz. Prepare for exams with focused practice and detailed feedback.
Enuma, Inc.
Teach with interactive activities
Teaches through interactive activities for Pre-K to 2nd grade. Includes 2,000+ exercises aligned with Common Core standards. Features collectibles, animated characters, and progress tracking.
Alok Singh
Learn and structures with interactive examples
Learn and structures through interactive visualizations, code examples, and practice challenges. Execute code in a live playground. Track progress and review solutions for common problems.
Panoramic Software Inc.
Digital tuner for music students.
The app provides a digital tuner with LED indicators for pitch deviation and a graph displaying sound frequency. It offers automatic or manual note selection and a wide detection range from A0 to C8.
SkyTale Software GmbH
Landing the
Simulate landings with realistic flight dynamics and detailed graphics. Adjust controls to manage approach and landing. Receive feedback on performance with analysis and scoring. Save and review landing attempts.
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