What are some alternatives?
When comparing Automagic Premium and Trigger, you can also consider the following products
Automate - Automate various tasks on your Android smartphone or tablet.
Tasker - Tasker is an application for Android which performs Tasks (sets of Actions) based on Contexts...
MacroDroid - MacroDroid - Automation for your Android Device
Workflow - Powerful automation made simple.
Llama - Phone going off at night? Annoying your colleagues at work? Get Llama!
AutomateIt - Automate Your Android!