買書書 BuyBookBook review for ECOMTREND Countdown Timer

Have used quite a few countdown apps but all of them got different issues. This app has similar issue at the beginning but they are the only one who can fix it and they explained to me with detail regarding the cause and fix. I was impressed! And they are the only one didn't ask me to review their app after the fix. P.S. i wish they can further develop the app with more function like multiple banner, or banner in different position.