
If you're on a Mac and not utilizing Keyboard Maestro, I'm probably fake enjoying any of our conversations. But seriously, you can save literal DAYS of time you spend clicking and pressing keys on the keyboard for things you shouldn't have to repeat. To date, Keyboard Maestro has saved me over 3 MONTHS of time. It actually adds up all of the time it saves you! And it's a one-time, no subscription purchase. Seriously, If I could only install ONE app on a mac, this would be the one by a long shot.
It does repeating boring tasks for me. And also some fun logging stuff.
Lets you do anything with your Mac. Automate all the things! Script apps that don't have scripting support (by replaying macros containing keypresses, mouse movements, clicks, whatever), have your Mac react to USB events, date/time, your input, device keys, external triggers, sleep/wake events, filesystem triggers, etc.
I use it heavily for a few years by now, it's one of my essential apps. New versions are usually insta-buys — when I read that v7 was released, I bought it without test-driving it first. Same thing happened a year or two later with v8. It's worth every single penny.