Start free. Keep building.

Free to start. Pro removes the Free practice cap. Both plans use the same assessment and mastery calculations.

Free

Free includes your saved diagnostic, Reasoning Profile and starting path.

Free allows 15 submitted practice activities in a rolling 7-day window.

Start free

No card needed to start Free.

How the free allowance works

Opening an activity does not use the allowance. Diagnostic responses do not count toward it.
On Free, running a pasted program uses one practice slot, including runs with Python errors. Empty or oversized programs are rejected without using a slot.
Slots become available as earlier submissions leave the 7-day window. There is no calendar-week or Monday reset.

Pro

Pro removes the Free practice cap.
Practice follows your learning path and prerequisites. Activities may repeat as you build evidence.
Both plans use the same assessment and mastery calculations.

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What you practise

The work is Predict, Trace, and Build: guess what a program will print, step through the variables, then move OB Bot on a grid.

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Plan questions

What uses my Free allowance?

Free allows 15 submitted practice activities in a rolling 7-day window. Opening an activity does not use the allowance. Diagnostic responses do not count toward it. On Free, running a pasted program uses one practice slot, including runs with Python errors. Empty or oversized programs are rejected without using a slot.

When does Free practice become available again?

Slots become available as earlier submissions leave the 7-day window. There is no calendar-week or Monday reset.

What changes with Pro?

Pro removes the Free practice cap. Practice follows your learning path and prerequisites. Activities may repeat as you build evidence. Both plans use the same assessment and mastery calculations.