What are some alternatives?
When comparing Easer and AutoIt, you can also consider the following products
Tasker - Tasker is an application for Android which performs Tasks (sets of Actions) based on Contexts...
AutoHotkey - Free keyboard macro program. Supports hotkeys for keyboard, mouse, and joystick. Can expand abbreviations as you type them (AutoText).
Automate - Automate various tasks on your Android smartphone or tablet.
Sikuli - Sikuli Script
MacroDroid - MacroDroid - Automation for your Android Device
TinyTask - TinyTask provides quick and easy automation by recording-playback.