Last updated November 10, 2026

Privacy policy

Cairn keeps your practices on your phone. It has no accounts, no analytics and no ads, and it sends nothing to us or to anyone else.

Who we are

Cairn is a habit app for iPhone and Android, made by Alex Vargas, an independent developer in Colorado. This policy covers the Cairn apps and this website, cairnhabits.com.

What the app keeps

To draw your sculptures, the app saves, on your phone only:

• the name you give each practice and the material you pick for it;
• each pebble you place: where it sits and when you placed it.

That's all. The app doesn't ask for your name, email, location, contacts, photos, health data or any other personal information, and it has no account to sign in to.

What we collect

Nothing. The app makes no network connections: it contains no analytics, advertising, tracking or crash-reporting code, and the Android app doesn't even ask for permission to use the internet. We never receive your practices or anything about how you use Cairn.

Who we share it with

No one. Since we never have your data, we don't sell it, share it or use it for advertising.

Backups by your phone

Your phone may include Cairn's data in its own backups: iCloud or computer backups on iPhone, and Android's backup to your Google account. Those backups are made, stored and protected by Apple or Google under their privacy policies and your settings. We can't see them.

The app stores

Apple and Google run the App Store and Google Play, where you get Cairn. They may share anonymous, combined statistics with us, such as how many people installed the app or how often it crashed, depending on your device's settings and their own privacy policies. These never include your practices.

Deleting your data

Delete a practice from its options menu to remove it and its pebbles. Uninstalling Cairn removes everything it saved on your phone.

Children

Cairn collects no personal information from anyone, including children.

This website

cairnhabits.com sets no cookies and runs no analytics. The playground saves nothing. The site is hosted by GitHub Pages and its fonts come from Google Fonts, so, like any website, GitHub and Google see your browser's IP address when you visit, under their own privacy policies.

Changes

If this policy changes, we'll update this page and the date at the top. If Cairn ever starts collecting data, we'll say so here before it does.

Contact

Questions about privacy? Email privacy@cairnhabits.com.