Privacy Policy

One Unbroken Line — Last updated June 2026

One Unbroken Line is a location-based audio platform. You walk around and sounds play. This page explains what data the app handles and why.

What we collect

If you create an account, we store your username and optionally your email address. Your email is only used to send a login code — we don't send newsletters or marketing emails. If you use the app without an account, nothing identifying you is stored.

When you're inside an audio zone, we record that visit: which zone, when you entered and left, and your approximate position at the time. GPS coordinates from zone visits are automatically deleted after 365 days. If you record a GPS path, those points are stored until you delete them.

Audio you upload stays on our servers until you delete it. If you submit a recording to a public contribution zone, your name (if you provided one) and the recording are stored for moderation by the zone's creator.

How we use it

Zone visit data powers the core experience — it's how the app knows which zones you've triggered. Creators can see aggregate statistics for their own zones. Nobody else sees your individual visit history.

We don't use your data for advertising and we don't sell it.

Third parties

• Email: Login codes are sent via email. Your address goes to our mail provider solely to deliver that code.
• File storage: Uploaded audio may be stored in Google Cloud Storage.
• Weather data: If a project uses weather-based conditions, your current GPS position is sent to Open-Meteo (a free, open-source weather API) to fetch local conditions. No account or identifier is included — just coordinates.
• Maps: Map tiles are loaded from OpenStreetMap and CartoDB. These are standard anonymous tile requests.
• Fonts: Project themes may load fonts from Google Fonts via CDN.

None of these services receive your name, email address, or account details.

Permissions

• Location: Required to detect when you enter or exit audio zones. Background location is needed so zones keep working when the screen is locked.
• Microphone: Used only when you choose to record a sound or submit a contribution to a zone.
• Motion: Used to reduce battery drain — the app checks device movement to decide how frequently to poll GPS.

Your data

Deleting your account removes everything tied to it: sounds, projects, zone visits, and paths. Anonymous contributions are not linked to an account and remain unless deleted by the zone owner.

To request deletion or ask about your data, contact us at [email protected].

Children

This app is not directed at children under 13 and we don't knowingly collect data from them.

Changes

If anything significant changes here, we'll update the date at the top of this page.