No signup. This is the exact tool your child, class, or academy uses every day. Move the beads, then try a quick challenge.
Tap the beads. Top bead = 5, bottom beads = 1 each. Watch the number change.
Solve it in your head — this is mental maths the abacus way.
14 levels, belt tests, certificates, audio dictation, progress tracking — for families, teachers, and academies.