Numbers,
made tangible.
A traditional Chinese abacus, brought to life in 3D.
Move the beads. Read the number. Learn by doing.
iPhone · iPad · Mac · Apple Vision Pro
Currently in TestFlight testing.

From beads to numbers.
Only beads resting against the beam count.
- 1
- One lower bead adds one.
- 5
- One upper bead adds five.
- 10
- The next rod to the left is worth ten times as much.
Three doubles. One satisfying finish.
123456789 × 2 × 2 × 2 + 9= 987654321
Watch the demonstration, then try it yourself.
Explore the challenge in the guide