T0
Share a configured activity
Students open the link and practice without creating an account.
Teachers
Assign a practice.
Keep it simple.
The teacher layer starts with a link: choose a routine or trainer, set the task and share it. Accounts and class reporting only arrive when they are useful.
T1
Set a target
Choose difficulty, question count, goal and due date.
T2
See class results
Only after repeated use justifies accounts, classes and reporting.