My approach was also really similar to yours

There is at least one other nearly identical kata 'Vowel Count'. Also, you should clarify whether or not y should be included in the count.

I'm really confident that this is a repeat. Also, I think the hints are a little too direct.

Nice! I will check those out (I'm away from the computer now). My background is in chemistry so I'm sure I can think of something that hasn't been covered yet.

Thanks for the feedback. It was my first attempt at authoring one. I have somne chemistry themed problems in mind - so maybe I'll switch my efforts to those.

Thanks for the feedback. It's my first kata, so I apologize for the mess. I'm going to take it down to work the issues out or possibly just replace it with a different idea - since someone also mentioned that there are no shortage of related problems.