This application is a simple and very fast way to learn and memorize all Katakana characters.
I created this application for myself when I started to learn Japanese. Proven effectiveness ! Give it a try if you want to learn and to memorize all Katakana with a very simple, fast and efficient method in few hours.
Improvements for iOS 17
Hiragana : learn and memorize 
Lily the frog 
Vikings : Midgard at war 