I use a fasting app called LIFE , and it works great, as long as I remember to turn it on and off again when I have my OMAD meal. Sometimes, I start it, and then forget it is on, and I don’t use the app every day.
However, it shows how many hours you have fasted, and when you go into fat-burning during the fast.
It is a free app, at least on the Apple App Store .
Here is the link to the website:
The best, and free, intermittent fasting tracking app for iPhone and Android. Easy to use. Supports all fasting types. Fast with friends. Download for Free.
lifeapps.io