Last Updated: October 29, 2026

Privacy Policy

We believe software should solve problems, not create new ones. This policy explains what information our applications use and how we protect your privacy.

1. Information Collection and Use

Our applications are designed using a local-first approach. We do not operate a remote database containing your personal account information. Your data remains on your device whenever possible.

Authentication Data (Android Credential Manager)

To allow secure sign-in, the application may integrate with the Android Credential Manager and Google Sign-In services.

The following information may be provided by your Google account:

  • User ID - A unique Google account identifier.
  • Email Address - Your primary Google account email.
  • Name and Profile Picture - Public profile information associated with your account.
This information is used only to create and maintain your local application profile. It is stored on your device and is not transmitted to Grandpa8 servers.

Advertising Data (Google AdMob)

Some applications may display advertising through Google AdMob. AdMob may automatically collect certain information directly from your device to deliver ads and measure performance.

  • IP address
  • Advertising identifiers and device identifiers
  • Country or city-level location information
  • Ad interactions such as views and clicks

2. Data Storage and Security

  • Personal Data: Authentication information remains stored on your device. Deleting the application or clearing application storage permanently removes this data.
  • Security: Because personal information remains local to your device, it benefits from the security protections provided by the Android operating system.

3. Third-Party Services

While we do not share your personal account information, third-party services integrated into the application maintain their own privacy policies.

4. Children's Privacy

Our applications do not knowingly collect personal information from children under the age of 13. Because authentication data is stored locally and advertising services are provided through Google, parents are encouraged to review device privacy and advertising settings with their children.

5. Changes to This Policy

This Privacy Policy may be updated from time to time. Any updates will be posted on this page and reflected by the Last Updated date at the top of this document.

6. Contact Us

If you have questions, concerns, or suggestions regarding this Privacy Policy, please contact us:

Email: grandpa8@kier.us

Account & Data Deletion Instructions

Checkity respects your ownership of your data and provides multiple ways to remove account connections and stored information.

Delete Data In-App

  • Open the Checkity app.
  • Tap the Profile icon in the upper-right corner.
  • Select Switch Account / Disconnect.
  • To remove all local checklist data, navigate to:

    Settings → Apps → Checkity → Storage → Clear Data

Delete Cloud Backup Data

  • Sign into Google Drive.
  • Navigate to Settings → Manage Apps.
  • Locate Checkity and choose Delete Hidden App Data.
  • This permanently removes the stored checkity_state.json backup file.