Support

12 Sierras is a furniture estimator for one-person shops. Start from overall dimensions and get a cut list, a lumber order, and cutting layouts planned against the boards you own and the machines you have.

A screenshot and the project's dimensions help. If a cut list looks wrong, say which template and variant you used.

Common questions

Where is my data?

On your device, and nowhere else. There's no account and no cloud sync, so each device has its own projects and rack.

How do I back up, or move to a new phone?

Open Backup from the Projects screen and tap Save backup, then save the file to Files, iCloud Drive, or AirDrop it to yourself. On the new device, open Backup, tap Open a backup file, pick that file, and tap Replace everything with this backup. Back up before you rely on the rack. Deleting the app deletes everything in it.

How accurate are the estimates?

They come from the dimensions you enter and the construction each template assumes, which is shown on screen. They're built to run slightly high, because an extra board is cheaper than a second trip to the yard. Always check the cut list against your own drawing and your own stock before cutting.

Why isn't hardware priced?

Slide and pull prices swing too widely by length and style to estimate honestly. Slides still count as a dimension: side-mount, undermount and wood runners each change the drawer box size.

What is AI drafting, and do I need it?

You don't need it. The templates cover dining tables, beds, side tables, bookcases, cabinets and dressers without it. AI drafting is an optional way to sketch a cut list for something the templates don't cover. It uses your own Anthropic, OpenAI or Google account. You paste in an API key from that provider, and they bill you for usage. Drafted cut lists are marked as drafted and checked against your dimensions, but AI makes mistakes, so verify every number.

AI drafting says the model wasn't found

Providers retire model names over time. Disconnect, then connect again and type a current model name from your provider's documentation into the Model field. Leave it blank to use the app's default.

Imperial or metric?

Set units under Shop. Imperial shows real fractions to the 1/16". Metric shows millimetres. Switching units doesn't convert numbers already typed into an open project.

Refunds and purchases

Apple handles App Store purchases. To ask for a refund, go to reportaproblem.apple.com.