This app has great potential and I would give 4 stars, but I am frustrated by the lack of sync between the iPhone and iPad versions which seem to be at variance with each other...
I like the daily word or phrase update on the lite version, wish that this was more fully realized in the paid version. Maybe it is? My iPhone 4 seems confused between the two versions.
If you sort that out then 4 stars
BhbH2009 about Learn Thai - Free WordPower