This app is a great way to learn writing "KATAKANA" with writing order.You can switch the guide display with the guide botton,It includes the hiragana from ?(a) through ?(n).It does not include the dakuten, handakuten or combination sounds like ??(gya).You practice only ?????????(a,i,u,e,o) for free version.If it is paid version, you can practice 46 letters.Now you will be "KATAKANA master" !!