Thai Dictionary on ipod

We bought an Ipod Touch in the post Christmas sales mainly to play music at our home. But almost everyday I hear about this or that new Ipod/Iphone apps ("applications") so I did a search today for some apps. I discovered a free Thai-English, English-Thai dictionary. It doesn't look too bad on a cursory glance. Much easier than carrying around a dictionary everywhere. Unfortunately, the NIV or ESV Bible which you can use offline wasn't free and cost almost $8. I'm sure there are lots of more very useful apps.