Step and Place
Water · Flow
Alternate hands: left → thumb A → right → thumb B. Untimed; measures each transition.
How it works
Prompts appear one at a time; you press the matching control without looking down. Learning mode is untimed and records which controls you confuse; a separate timed assessment measures response time.
Part of Water
Connect actions smoothly. Train the connection between actions rather than isolated speed. Alternate a movement key with a thumb press, first untimed, then on a pulse.