This app was mentioned in 2 comments, with an average of 1.00 upvote
Here you go:
https://play.google.com/store/apps/details?id=thai.projectThai
Have fun :)
Maybe you can try my app: https://play.google.com/store/apps/details?id=thai.projectThai
it has many free phrases and words, I recorded it myself :)
Khwanoi