Fasting App

Hello, wondering if anyone has an app or widget that can  preprogram specific fasting times. So every day i can just see from 1200-1600 i can eat, then i can confirm or deny I met my goal, or be able to program specific day fasting goals, like alternate day fasting and OMAD. I am using the Vivoactive 3.

I am currently using the Intermitted Fasting widget with the avocado clock but am having trouble with it. I can't change my fast time when i forget to start a fast timer, and for whatever reason it stops my fast at midnight some days so my "streak" is broken. Whenever i try to adjust fasting time, or delete stopped fasts i get the IQ logo with the yellow exclamation mark.

I am also using timer and alarm on my phone to remind me of my fasting times since the widget is unreliable but I don't always have my phone so when I miss 2 of my 4 hour eating period its hard to get all my planned meals in.