The best alternatives to Saent are Boomerang for Gmail, FocusList, and Focus. If these 3 options don't work for you, we've listed a few more alternatives below.
FocusList is a productivity app that helps you get more DEEP work done. Plan your day with timeboxing, stay focused with Pomodoro technique and track your time with our advanced stats.
Reclaim your productivity by blocking distracting sites and applications, like Facebook and Fortnite. Stay on task and in flow to accomplish your best work!