How can we help?

How do I measure the total rise?

Measure straight down from the top of the finished deck or floor to the spot where the bottom step will land. If the ground slopes, measure at the landing spot, not at the deck. How to calculate stairs walks through it.

Why is my first step shorter on the stringer?

Treads sit on top of the stringer, so every step gains one tread thickness except the bottom one. Stair Once cuts the bottom of the stringer short by your tread thickness (the first-step drop) so all finished risers come out equal. Set the tread thickness in Stair options. More on stringer layout.

The code check says my stair fails. What now?

Read the line under the warning. It names the one change that makes the stair pass, and the button next to it applies that change. If you set a run limit, you may need more run or a landing. See the stair code limits.

How do I set the run I have?

Tap Run above the total rise and type the horizontal space available. Stair Once fits the steps to it. Clear it to go back to solving from the rise alone.

Restore my purchase

Open Settings in the app (the slider button at the top) and tap Restore, or tap Restore purchase on the upgrade screen. Use the same Apple Account you bought with. Pro is shared with your Family Sharing group.

Refunds

Purchases are handled by Apple. Request a refund at reportaproblem.apple.com. Your saved stairs stay open either way.

Where are my saved stairs stored?

Only on your iPhone. They are included in your regular iPhone backup. Deleting the app deletes them.