I had launch a product on ProductHunt. Eagluet- simple and elegant Pomodoro Timer. Some of its feature are, it notifies you 5 sec early when the Break mode start. Forces You to Rest or go somewhere else while in the Break time. The good thing is it is open source, you can contribute request for the new feature.
Please do upvote on the ProductHunt https://www.producthunt.com/posts/eagluet
GitHub:-
https://github.com/surajrathod/eagluet