ApexCalc is a free web platform that gathers calculators across more than 50 disciplines, including medicine, engineering, finance, science, law, and sports and fitness. The site lists over 11,600 tools, which can be searched or browsed by…
Xue Chinese is a Mandarin learning app for iPhone, iPad and Android. Its original HSK 3.0-aligned lessons connect vocabulary and grammar with everyday dialogues, listening, reading, quizzes and practice assessments. Follow a guided…