Privacy policy ยท Effective November 13, 2026
The app collects nothing.
Short version: The Stair Once app has no account, no server, no analytics, no ads and no tracking. The stairs you save are stored only on your iPhone. Nothing leaves the phone unless you choose to share it.
What the app stores
The measurements you enter, the stairs you save and your settings (such as tread thickness or appearance) are stored on your device using Apple's on-device storage. We cannot see them, and they are not sent anywhere.
What we collect
Nothing. Stair Once does not collect personal information, usage data, diagnostics, location, contacts or identifiers. It contains no third-party SDKs.
Purchases
The one-time Pro unlock is processed entirely by Apple through the App Store. We never see your payment details or Apple Account. Apple's handling of purchases is covered by Apple's own privacy policy.
Sharing
When you share a stair as an image or PDF, the file is created on your phone and handed to the share sheet. Where it goes next (Messages, Mail, AirDrop and so on) is up to you and the app you pick.
Deleting your data
Delete a saved stair from inside the app, or delete the app to remove everything it stored. There is no copy anywhere else.
This website
This website, staironce.app, also uses Google Analytics to count visits: the pages viewed, the site that sent you here, your device type and rough location. Advertising features and Google signals are off, and nothing you type is recorded. In the EU, the UK, the European Economic Area and Switzerland it sets no cookies. To turn it off in your browser, open the site with ?mute-analytics at the end of the address. The app itself is not affected and still collects nothing.
Children
Stair Once collects no data from anyone, including children.
Changes
If this policy ever changes, the new version will be posted on this page with a new effective date.
Contact
Questions about privacy: support@staironce.app