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Sub One Privacy Policy

Publisher: Precision Sports AI
Contact: contact@precisionsportsai.com

Sub One is a shot timer for iPhone and Apple Watch. This policy explains what the app does with your information. In short: Sub One does not collect your data. Nothing you record is sent to us or to anyone else.

What the app records

When you time a string, Sub One records on your own devices:

  • Motion sensor readings (accelerometer) from your Apple Watch, used to detect shots and time them.
  • The results of each string: shot times, splits, labels you add, start position, and the settings you chose, including the firearm profiles and calibrations you create.

This data is created and stored by you, on your devices. We never receive it.

Where your data is stored

  • On your iPhone and Apple Watch. Strings, profiles and settings are stored in the app's own storage.
  • In your iCloud Drive. Sub One stores your strings in its iCloud Drive container so they survive a reinstall and appear on your other devices. This is your private iCloud, governed by your Apple account and Apple's terms. The developer cannot read it.
  • Between your phone and watch. Your iPhone and Apple Watch exchange data directly using Apple's WatchConnectivity. It does not pass through any server of ours.

Health data and HealthKit

The Apple Watch app starts a workout session while a string is running. This keeps the watch's sensors running and the screen on. The workout session is used only for that purpose. It is ended and discarded when the string finishes. Sub One does not write anything to the Health app and does not read your health data.

What we do not do

  • We do not run a server that receives your data.
  • We do not use analytics, advertising, tracking or crash-reporting services.
  • We do not include third-party SDKs that collect data.
  • We do not sell, rent or share your information, because we do not have it.
  • We do not create accounts. There is nothing to sign in to.

Sharing and exporting

Sub One lets you export your strings as JSON or CSV files using the iOS Share Sheet. An export leaves the app only when you choose to share it, and goes only where you send it. Once you share a file, what the recipient does with it is outside our control.

TestFlight and the App Store

If you install Sub One through TestFlight or the App Store, Apple handles the download, purchase, and any diagnostics you have chosen to share with developers in your iOS settings. That is governed by Apple's own privacy policy. Any information Apple makes available to us is anonymous and aggregated, and does not contain the strings you record.

Children

Sub One is rated 9+ on the App Store. Because the app collects no personal information from anyone, it collects none from children.

Your choices

Your data is on your devices and in your iCloud Drive. You can delete a string or a profile inside the app, and you can remove everything by deleting the app and clearing the Sub One folder in iCloud Drive. Because we hold no copy, there is nothing for us to delete on request.

Changes to this policy

If the app changes in a way that affects this policy (for example, if a future version sends any data off your device), this page will be updated before that version is released, and the effective date above will change.

Governing law

This policy is governed by the laws of the State of Arizona, United States.

Contact

Questions about this policy: contact@precisionsportsai.com

Effective date: 31 October 2026