It might confuse you – Japanese-katakana Review

Okay well for those of you who want to learn how to write in katakana, click on the first option in the app, and then click on any of the options listed to do (like the: a, i, u, e, o, or ka, ki, ku, ke, ko, etc) and it'll teach you how to write it!!! Hope this helps!! (:
Review by SYZV on Japanese-katakana.