Privacy Policy

Your data stays yours.

Zync is a personal data watcher. This policy explains what information we collect when you use the Zync mobile app and backend services, why we collect it, and how you can control it.

Last updated · October 16, 2026

01

Information We Collect

Account Information

When you register, we collect your name, email address, and a securely hashed password. You may also set an user nickname that is shown next to trackers you share with the community.

Uploaded Trackers

When you upload a tracker to the community, we collect the tracker details you provide, including its name, source, result format, description, and category.

Community Activity

When you star trackers uploaded by other community members, we record that activity and it may be visible to others. We also periodically check that publicly shared sources are reachable, so broken trackers can be detected.

Location (Optional)

A tracker can read your location through placeholders such as latitude, longitude or city. The app takes a single fix only when you tap the location button, stores it on your device, and stamps it into that tracker’s request. It is never sent to the Zync backend on its own, and it reaches only the source you configured for that tracker. If you upload a tracker to the community, the value travels with it unless you mark the location row private — an unlocked row uploads its value. There is no background tracking.

Usage Statistics (Optional)

With your consent, the app sends anonymized usage events — widget refresh success or failure, app launches, and fetch duration — along with the app version and, for shared trackers, their numeric identifier. This helps us detect failing syncs and improve reliability. We never collect the contents of the sources you watch, and no device or advertising identifier is sent. This setting is off by default and can be turned off at any time in Settings → Privacy, which also deletes any events still queued on your device. Usage events are kept for 90 days.

App Version Counters

Independently of the optional setting above, our servers keep an anonymous, aggregate daily count of the app versions that contact us. This contains no account, device, or IP identity and is used only to know which versions are still in use. These counters are deleted after 365 days.

Crash Reports (Optional)

When the app crashes, a recovery screen offers to send a report. A report contains the exception class, the thread, your app version and platform, and a stack trace. Before it leaves your device we strip URLs, JSON fragments and token-shaped strings, and nothing is sent unless you choose to send it. While you are signed in, the report is linked to your account so we can follow up. Reports are deleted after 30 days.

02

Your Local Trackers Stay Local

Trackers you create in the app are stored only on your device. They are not uploaded to our servers. Nothing is saved to the Zync backend until you explicitly choose to upload a tracker to the community.

03

How We Use Your Information

We use the information we collect to provide and improve the service: to authenticate you, to display and manage your account, to publish trackers you choose to share with the community, to moderate community content, and to respond to your requests.

04

The Community Is Public

Trackers you upload to the community are publicly available to all users of Zync. Do not include personal, sensitive, or confidential information in anything you upload. The community exists to share trackers among users, and uploaded content is shared with the community by design.

05

Data Retention & Deletion

You can delete any of your uploaded trackers at any time from the app. When you delete your account you can choose to keep your shared trackers visible to the community (shown as "Deleted Account", with their stars) or remove them as well; either way your account information is deleted and the trackers are no longer associated with you. Local trackers on your device remain under your control and can be removed by uninstalling the app or deleting the data. Optional usage events are retained for 90 days and anonymous app-version counters for 365 days, after which they are deleted automatically. Crash reports you choose to send are retained for 30 days. Location fixes you take stay on your device and are removed with the tracker's data.

06

Security

Passwords are stored as one-way hashes, and API access is authenticated with bearer tokens. Traffic between the app and our servers is encrypted in transit with HTTPS and certificate pinning, and credentials are kept in the platform's encrypted storage. Requests to a source you configure yourself go to the address you entered: when that address is plain http, the app warns you before sending anything, and community trackers are limited to public https. We apply reasonable technical and organizational measures to protect the data we hold, but no method of transmission or storage is completely secure.

07

Children's Privacy

Zync is not directed to children under 13, and we do not knowingly collect personal information from children. If you believe a child has provided us personal information, contact us and we will delete it.

08

Changes to This Policy

We may update this policy from time to time. The current version will always be available at this page, and we will update the "Last updated" date at the top. Material changes will be communicated through the app.

09

Contact Us

If you have questions about this policy or want to exercise your privacy rights, contact us at p48.group@gmail.com.