The game is allright but has some flaws.
The overall look of the game is fine. Animations, graphics and sound effects are good.
One problem I had is that it's hard to tell where the numbers are if they are behind the hand, it's also hard to tell where the hitbox of the hand is. The cursor should be something smaller and more symmetric, with the entire cursor as a hitbox.
The game itself is way too short, it needs more content. If the goal of the game is to have a small challenge where you try to have the best time it could have small levelpacks with a new time for each one, but as it is now it isn't enough. Considering the timer you could even consider going for a leaderboard.
Some music would also be nice.
Overall it's okay, but it could be better.