Well done on the downloads. I just gave you another one
Some points if I may..
I suggest you make it use up the whole screen. On my 16:9 device I get black bars down the sides. There are some good tutorials on this. (The banner ad is off centre too).
The initial screen had some confusing words placed over the help text.
Sometimes duplicate words can be in the list, and it won't let me choose the second one.
At least once it took me to the next level even though there were some words left.
It's a bit hard to see the difference in colour between the 'found' words and the not found words.
The music is kind of loud and sudden.
Your app store listing shows 3 identical screen shots. I suggest you use a different one for each screen size in your app listing.
Always look to improve
edit: a question though, do you generate your puzzles or are they fixed?