Cool Hunt !
Hello @namannomi, I really appreciate your effort & Here is my opinion-
Well, it is truly helpful for us and it is required to take care of our battery health because excess of anything is very Harmful whether it is food for us or Charge for Phone. Due to our Busy life-Style we generally forget to remove our phone from Charging Point even I forget many times and it is quite common problem with almost all people who has forgetting nature. :grinning:
Although, It is great such application are available so many on Play Store or App Store and I don't they are as accurate as they should be and Even No one can calculate 100% accurate and I think Mobile Companies should work on it and there are Many new phones which have this facility of Alarm in-built. I don't use this application personally...