There’s the last R in AARRR metrics we haven’t looked at yet. It’s Retention. We’ll be talking about it for the rest of this chapter. Let’s get it! 
I really like how AARRR metrics follow each other in the logical sequence:
- Users are acquired. Via organic channels (blog posts, search engines, marketing campaigns).
- Then users are activated. They did something in the app which will (hopefully) make them come back.
- Some portion of users is retained. They keep using our app on a regular basis.
- Users who really like the app purchased it and...
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About SQL Habit
Hi, it’s Anatoli, the author of SQL Habit. 
SQL Habit is a course (or, as some of the students say, “business simulator”). It’s based on a story of a fictional startup called Bindle. You’ll play a role of their Data Analyst
and solve real-life challenges from Business, Marketing, and Product Management.
SQL Habit course is made of bite-sized lessons (you’re looking at one atm) and exercises. They always have a real-life setting and detailed explanations. You can immediately apply everything you’ve learned at work. 