Learn to identify and locate stars and constellations with interactive learning modes. Test your knowledge by recognizing highlighted stars or finding stars by name.
Navigational Sky Coach by Nicholas Braun

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Learn to identify and locate stars and constellations with interactive learning modes. Test your knowledge by recognizing highlighted stars or finding stars by name.






This tool helps balance chemical reactions and calculate molar masses, moles, and actual masses of reactants and products. It supports various formula formats and can identify limiting reagents. Data can be sent to another app for gas phase calculations.




Improve English fluency by focusing on listening and speaking practice. This app offers stories, dialogues, and pronunciation exercises with native speakers. Learn new vocabulary with pictures and play games to reinforce your learning.


Master Data Science, AI, and Machine Learning with this AI-powered app. It offers over 148 lessons, hands-on exercises, and an AI assistant for instant help with concepts and code. Ideal for beginners and developers looking to advance their careers.