Susa Books
Privacy
Susa does not collect, transmit or store any personal information on our side. There is no account, no analytics, and no server of ours that your books pass through.
Last updated 8 November 2026
What Susa stores, and where
Your books (transactions, invoices, customers, receipts and settings) are stored on your Mac, iPhone and iPad and, if you use iCloud Drive, in Susa's folder in your own iCloud. We cannot read them. Each device also keeps daily safety copies on that device only.
What leaves your device, and only when you ask
Tax news (Canada, the UK, Germany): Susa reads the public news feeds of the CRA, HMRC and Germany's Federal Ministry of Finance. Nothing about you is sent.
EU VAT number check: when you press Check on an invoice, the customer's VAT number goes to the European Commission's VIES service, which says whether it is valid.
The assistant: you choose, on each device, which AI answers typed questions. Apple Intelligence on your device is the default, and nothing leaves the device. With Apple Private Cloud Compute, your question and the totals Susa looks up go to Apple's servers, which do not keep them.
Claude, with your own Anthropic API key, only after you agree in Settings → Assistant: Susa sends Anthropic your question, the earlier questions and answers in that conversation, a short description of the business (country, region, kind of business, sales tax registration, tax year and revenue so far), and the totals it looks up, which can include the names of customers or suppliers the question is about. Your own name, addresses, tax and account numbers, receipts and files are never sent. The request goes from your device straight to your own Anthropic account under Anthropic's terms; we never receive it. Susa lists every request under “What was sent”, and you can remove the key at any time.
Camera
The camera is used only when you photograph a receipt. The photo is kept with your books.
No tracking
No analytics, no advertising, no tracking and no third-party SDKs.
Your rights
Because we hold no data about you, there is nothing for us to show, correct or delete. To delete your books, delete the Susa folder in iCloud Drive, or the app, on your devices.
Contact
Oxin Studio Inc., Alberta, Canada · [email protected]. Changes to this policy are posted on this page with a new date.