Does each profile have its own progress and level?

Yes, completely separate. Each profile has its own level, level-by-level progress, speed, accuracy, key-by-key stats, achievements, and experience. Nothing gets mixed up between profiles: the method adapts to each person individually.

What is individual to each profile

• The exact point in the course they are at.
• The keys and combinations they struggle with the most, which is what the system uses to generate their exercises.
• Their historical speed and accuracy.
• Their achievements and experience.

What is shared among all profiles on an account: the subscription (the plan belongs to the account, not to each person) and the login email.

That’s why it’s important for each person to use their own: two people on the same profile produce stats that don’t describe either of them.