Overall this is a good game, but it’s got a few issues that need work.
The most significant is that the number of moves shown isn’t always accurate. There have been a few levels I played in which I moved one or two matches more than was indicated, and was scored as correct. That's confusing and needs to be looked into.
Meanwhile, the app plays an ad after every single level. That’s an annoying waste of time; there are other matchsticks game apps that respect my time more.
Finally, the level selection page doesn’t show which levels have been solved, and solving one level often unlocks two, so it’s easy to lose track of what the last level was that I solved.
Oh, and when I tap on a plus sign, I shouldn’t ever pick up the horizontal match. On a small touchscreen it can be hard to get the right one.
All that said, these are fun puzzles, and the app works well enough.