Android App - Halloween Countdown

Hello,
Halloween is approaching. I have developed an android application for you.
Halloween is approaching here. Please install the application and leave a beautiful star. Come on practice!
Can you tell me the steps I need to improve?
I am waiting for your comments.

https://play.google.com/store/apps/details?id=com.yavuz.halloweencounttimer

Thanks

Hey the app is great, left a review as “Puzzle World” can you please rate my app:
https://play.google.com/store/apps/details?id=com.sciencepuzzles.wordsearch

Slope unblocked is a pleasant and engaging game that can be played at any school or high school in the United States.