The app converts between various units of radioactivity, accommodating older notations. It includes conversions for Becquerel, Sievert, Gray, rad, rem, Roentgen, and Curie.
This app helps users learn intermediate English vocabulary and phrases essential for exams like Eiken, TOEFL, and TOEIC. Learning vocabulary in context as phrases saves time and improves reading, listening, and grammar skills for higher test scores.
Play piano with touch keyboard, including black key half-tones for practice and play. Access animal sounds and instrument effects. Tap rhythm buttons for drum and samba patterns. View illustrated visuals and Japanese text labels for learning.
