What are some alternatives?
When comparing Sfen and Atooma, you can also consider the following products
MacroDroid - MacroDroid - Automation for your Android Device
Tasker - Tasker is an application for Android which performs Tasks (sets of Actions) based on Contexts...
Trigger - Trigger is a time tracking app that helps you work collaboratively, track, organise and invoice...
Automagic Premium - Automagic Premium is the magic wand to automate your Android device.
Automate - Automate various tasks on your Android smartphone or tablet.
Workflow - Powerful automation made simple.