The best alternatives to Focus Booster are Tadam, Doropomo, and Sprints. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Focus Booster?
AssemblyAI— Speech-to-Text API with superhuman accuracy
We created Domopomo as a criticism of the high productivity in most people’s lives. Our desire was to show a different approach to manage your time and work. We really believe in a work/life balance and you can do it using Doropomo.
Sprints is a simple and user-friendly productivity tracker for Mac, that lives on the menubar and helps you get more productive on your tasks day by day.
Focus Keeper is a customizable Pomodoro timer with task management that works on desktop and mobile app. This app is inspired by Pomodoro Technique which is a time management method.