Stair Stringer Pocket

Stair Stringer Pocket is a focused field calculator for carpenters who need quick straight-stair layout math without repeating geometry by hand.

Use it to:

- enter total rise, target riser, and tread depth
- see recommended step count and actual riser height
- review total run, stringer length, and stair angle
- switch between imperial and metric units

Launch build scope:

- local-first straight stair calculator
- imperial and metric unit support
- recent calculations stored on device
- no login, analytics, ads, or cloud dependency

Why people will pay:

- cuts layout mistakes before material is marked
- returns jobsite-ready values without a spreadsheet
- works fully offline
- stores recent calculations locally for reuse