[Flipd: Focus & Study Timer][伴讀APP一起讀書APP]
Flipd: Focus & Study Timer - Google Play 應用程式
Flipd: focus & study timer
Flipd - App of the Day on the App Store英文介面
Flipd: Focus & Study Timer - Google Play 應用程式Flipd: focus & study timerFlipd - App of the Day on the App Store英文介面