HOLD
EDGE · LEVEL
Hold the long side of the phone along the line
 
waiting for the sensor…

Record wall · 28 holders

Tap a holder when it's up. Heights are to the center dot on the holder's bottom edge, measured up from the floor. The number on each chip is the distance from the right end of the wall to that dot.

0 / 28
Row lines: 30 · 45 · 60 · 75 in up
Dots: 13 · 28 · 43 · 58 · 73 · 88 · 103 in from the wall

Pro Level

Uses your iPhone's tilt sensor. Tap Start, then tap Allow when it asks for motion access.