What are some alternatives?
When comparing MacroDroid and Trigger, you can also consider the following products
Tasker - Tasker is an application for Android which performs Tasks (sets of Actions) based on Contexts...
Automate - Automate various tasks on your Android smartphone or tablet.
Workflow - Powerful automation made simple.
Llama - Phone going off at night? Annoying your colleagues at work? Get Llama!
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
Yomu - One place to read your favorite content from around the web