Random Input simply generates random cards, suites or numbers from 1 to 52 and serves as a virtual spectator who whispers you random feedback.
Random Input serves as a free introduction to Acaan Trainer, Stack Trainer, Twice as Hard Trainer, Serial Sum Trainer, and Gauge Trainer, which represent the single most unified set of technical learning tools for close-up magicians. These apps are available by this developer.
Check them out.
Swipe, swipe, touch. Swipe and again. Randomly.