What are some alternatives?
When comparing Simple Habit and Free Alarm Clock, you can also consider the following products
Headspace - Meditation made simple. Brilliant things happen in calm minds.
Gnome Clocks - Clock application designed for GNOME 3
Calm - Take a break and meditate.
Talalarmo - Minimalistic android alarm
AuraHealth.io - Become more mindful with 3-minute, guided meditations.
KTimer - KTimer is a little tool to execute programs after some time.