Privacy Policy

Effective September 24, 2026 · DoorBooks AI is operated by Northrock Capital LLC (“DoorBooks”, “we”, “us”).

DoorBooks AI is bookkeeping software for small residential landlords. This policy explains what information we collect when you use it, what we do with that information, who we share it with, and the choices you have. If you have a question that isn’t answered here, email mark@nrockcapital.com.

1. Information we collect

2. How we use information

We do not sell your information, and we do not use your books, documents or QuickBooks data to train AI models.

3. AI processing

When you use a feature labelled “Let AI read it”, “Let AI sort these”, “Ask AI” or the assistant, the relevant content is sent from our server to Anthropic, PBC, our AI provider, to generate the result. Anthropic processes this data under its commercial terms, which do not permit it to train models on your data. Only what is needed for the request is sent; your login credentials and QuickBooks access tokens are never included.

4. QuickBooks Online connection

You can connect a QuickBooks Online company to DoorBooks. Connecting uses Intuit’s sign-in (OAuth 2.0); you sign in on Intuit’s site and Intuit gives DoorBooks a limited access token. DoorBooks never sees your Intuit password.

Your use of QuickBooks Online is also governed by Intuit’s own terms and privacy statement.

5. Who we share information with

We share information only with the service providers that run DoorBooks, and only as needed to provide the service:

ProviderPurposeData involved
Supabase, Inc.Logins and the database that stores your books (hosted in the United States).Account information, your books, QuickBooks tokens.
Netlify, Inc.Hosting the website, the app and the server functions.Server logs; data passing through server functions.
Anthropic, PBCAI features you invoke.Content of the request (see section 3).
Intuit Inc.QuickBooks Online connection, if you enable it.See section 4.
Stripe, Inc.Free-trial sign-up, subscription billing, receipts and the “Manage billing” portal.Your email, card details you enter on Stripe’s pages, plan and subscription status. Stripe’s own privacy policy applies to what it collects.

We may also disclose information if required by law, to protect the rights and safety of our users or the public, or as part of a merger or sale of the business (in which case this policy continues to apply to the transferred data).

6. Security

All traffic uses HTTPS. Your books are stored in a database with row-level security, so each account can only read or change its own rows, enforced by the database itself. API keys and QuickBooks tokens live only on the server. Passwords are hashed by our login provider and are never visible to us. No system is perfectly secure; if we learn of a breach affecting your data we will notify you without undue delay.

7. Retention and deletion

8. Your choices and rights

You can view and edit everything in your books inside the app, download all of your data as a JSON file from Setup at any time, cancel your subscription or update your card from “Manage billing”, disconnect QuickBooks at any time, and delete books or your account as described above. Depending on where you live you may have additional rights (such as access, correction, portability or objection); email us and we will honor them.

9. Children

DoorBooks is a business tool and is not directed at anyone under 18. We do not knowingly collect information from children.

10. Changes

If we change this policy in a meaningful way we will update the date above and, for significant changes, notify you by email or in the app before they take effect.

11. Contact

Northrock Capital LLC · mark@nrockcapital.com