really simple HSK: Chinese Character Flashcard Android App

[James_Shef]

Hi, I have just developed an Android flashcard app to help users memorise the characters of the HSK:

 

https://play.google.com/store/apps/details?id=com.preciouschicken.reallysimplehsk

 

I've currently uploaded HSK Levels 1, 2 and 3; but the remainder are in the pipeline.  I'm far from a professional software developer, this is a hobby and my first go at making an app; so future development is when I get time.

 

I would appreciate any feedback on my efforts to date!

 

I'm also thinking of making Levels 5 and 6 available as an in-app purchase; maybe around US$ 0.99 or so.  Simply because it costs US$ 25 to put an app on Google Play and because, well, HSK Level 5 and 6 will be a lot of work.  Appreciate thoughts on this, suspect it may not be worth it because of the huge amount of apps out there....