Challenge Accepted is a local‑first habit and challenge tracker. We value your privacy and designed the app to work without accounts or servers by default.

What we store

• Local data: Your challenges, habits, and progress are stored in your browser's local storage on your device. This data never leaves your device unless you explicitly export or sync it.
• Optional Google Sheets sync: If you connect Google in Export Data, the app requests an access token via Google Identity Services and communicates directly from your browser to the Google Sheets API to read/write your spreadsheet. No server operated by us proxies or stores your data or tokens.
• Spreadsheet ID: If you choose a spreadsheet to sync, its ID may be saved in local storage for convenience.

What we do NOT do

• No account creation or sign‑ups.
• No tracking, analytics, or ads.
• No server‑side storage of your personal data.

Third‑party services

The optional Google integration uses Google Identity Services and Google Sheets API. Your use of these services is subject to Google's terms and privacy policies. Tokens are handled client‑side and used only to access the spreadsheet you select or create.

Cookies

The app itself does not set tracking cookies. Google's sign‑in flow may set cookies necessary for authentication if you choose to connect Google.

Data export and deletion

You can export your data at any time from the Export Data page. To delete your local data, clear your browser's site storage for this app. If you synced to Google Sheets, you control and can delete the spreadsheet in your Google account.

Children's privacy

Challenge Accepted is not directed to children under 13. If you believe a child has provided us with personal information, please contact us so we can assist, though by design we do not hold server‑side data.

Changes to this policy

We may update this policy from time to time. Material changes will be reflected on this page with an updated effective date.

See also: Terms of Service.