Privacy Policy
Last updated: March 13, 2026
What we collect
Tán Đồng collects only the data necessary to provide bill-splitting functionality: group names, expense descriptions, amounts, and member associations.
How we use your data
Your data is used solely to calculate balances and track shared expenses within your groups. We do not sell, share, or use your data for advertising.
Data storage
All data is stored in a secure database hosted on Turso. Session tokens are used for authentication and expire automatically.
Third parties
Tán Đồng integrates with OpenAI's ChatGPT via GPT Actions. When you use Tán Đồng through ChatGPT, OpenAI's privacy policy also applies to your interactions within ChatGPT.
Data deletion
To request deletion of your data, contact us. Accounts and associated data can be permanently removed upon request.
Contact
For questions about this policy, reach out at contact@vuadu.net.