70K+ organic downloads for my single screen Minimalist Retro clock App

I made this simplest clock app with a retro theme and It gets hits on the App Store in just 2 weeks after launched.

https://apps.apple.com/cn/app/minimalist-retro-clock/id1491920613

Most of the downloads are from Mainland China and all are organic. I was wonder how it gets hit, then later I knew that most of the bloggers/students and tech reviewer shared this app as they liked it the way it's simple and easy to use as a desk clock.

So later I did some improvements based on user's feedback and stay connected with all users via app store review section by writing a reply to their feedback.
Now it has 4.8 stars average rating out of 880 ratings from all countries on the app store.

Also, I put less distractive interstitial ads while changing the theme and set In-App purchase 0f $1.99 to remove ads.

Now there are 1.5k daily active users and getting 300-700 daily organic downloads from the App Store.

Try this app and don't hesitate to ask me any questions about this story.

Thank you : )