Has anyone tried Kanji Trainer Portable for PSP?

[SakeIt2Me]

I'm only starting to learn so this purchase will be a ways off, but I want to know if anyone has tried Kanji Trainer Portable for the PSP, and if you think it's useful? I know it's nowhere as useful as actually writing them out while I'm learning them but...just wondering.
If this is any help in finding which game I'm talking about, here's its page on playasia:
http://www.play-asia.com/paOS-13-71-9f- ... -1mfl.html

Or are there other kanji learning games for PSP that worked for you? I couldn't find anything searching the forums...