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Privacy

Last updated: 3 May 2026

Thirty is an app that helps you spend less time on your phone. We built it as a tool we needed ourselves. We did not build it to monetise your data.

What we collect

Nothing.

That is the complete list. Specifically:

• We do not collect personal information (name, email, age, location).
• We do not collect analytics, telemetry, crash reports, or behavioural data.
• We do not collect your contacts, photos, files, or any other content from your device.
• We do not have servers. There is nothing for us to collect into.

What stays on your device

To do its job, Thirty stores a few things in private app storage that never leave your phone:

• The six apps you chose (their package identifiers).
• Your daily phone-time count and a 30-day rolling history of that count.
• Your unlock count and the timestamps for the wait timer.
• A SHA-256 hash of your rescue code (never the code itself).
• Your onboarding state and a small set of preference flags.

This data lives in Android's DataStore preferences for the Thirty app. It is removed when you uninstall the app. We have no way to read it.

Permissions we ask for, and why

• Accessibility Service. Used to detect when you open a non-essential app, so Thirty can send you back to its home screen. Required for the daily-cap rule to actually enforce. Thirty does not log, transmit, or analyse the contents of any app. Only the package name of the currently foregrounded app is read, in memory, and immediately discarded.
• Notification Listener. Used to silence notifications from apps outside your six during an active session. Notification content (title, text, sender, attachments) is never read, stored, or transmitted — only the source package is checked.
• Device Administrator. Used solely to add a deactivation step before uninstall, so you cannot impulsively remove Thirty during a craving. This is a self-applied friction layer. You can deactivate device admin at any time from Settings → Security → Device admin apps.
• Default Home App. Required for Thirty to replace your phone's home screen — that's how it hides the apps you didn't pick.
• Query All Packages. Required for the in-app picker to show you the apps installed on your device, so you can choose your six.

Sharing

We do not share data with third parties, because we do not have data to share. There are no advertising networks, analytics SDKs, or backends in this app.

Children

Thirty is not designed for children under 13. We do not knowingly collect data from anyone, including children.

Changes to this policy

If this policy ever changes, the updated version will appear at this URL with a new "last updated" date. If we ever start collecting data of any kind, the policy will say so explicitly and prominently — not buried in a list.

Contact

Questions about this policy: hello@30min.day