Showing 241–260 of 1,000 ranked alternatives.
Eli Rykoff
Calculate cosmic distances and scales
Set cosmological parameters like H_0, Ω_m, and Ω_Λ. Calculate various astronomical distances and scales based on redshift and selected cosmology. Display results in multiple units and export data for further analysis.
Alok Singh
Convert of temperature, distance, weight, and speed
Convert of temperature, distance, weight, and speed. Switch between Celsius and Fahrenheit, miles and kilometers, pounds and kilograms, and kilometers per hour and miles per hour. Perform calculations and save frequently used conversions.
Aleksandr Balyberdin
Track asteroid paths and fireball events
Track asteroid and meteor events with an interactive map showing impact locations and energy levels. View detailed orbital data and risk assessments for -Earth objects. Search NASA's asteroid database for specific objects and their characteristics.
Greg Paskal
Calculate magnification and apply Barlow lens adjustments
Calculate magnification using telescope and eyepiece focal lengths. Input values in millimeters. Include 2x to 5x Barlow lens options. Perform calculations for amateur and professional astronomers. Display results directly.
PlayDate Digital Inc.
Explore and learn facts about the solar
Explore with interactive animations and learn facts about each of the 8 solar system . Answer trivia questions, play educational games, and discover details about moons, the asteroid belt, and planetary features.
Lumeon Technologies, LLC
Practice tests and mock exams for certification
Study for the journeyman exam with practice tests, mock exams, and quick quizzes covering all topics. Review detailed explanations for each answer. Set reminders for study sessions and track progress over time.
Andreas Koegler
Practice with audio quizzes
Learn through audio-powered quizzes that provide instant feedback. Practice by speaking answers aloud or tapping for multi-sensory engagement. Choose from 10+ languages for voice input and output.
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.