Dutch Digital Dynamics Pty Ltd · ABN 86 081 237 087
Effective date: 1 May 2026 · Last updated: 1 May 2026
Dutch Digital Dynamics Pty Ltd ("we", "us", or "our") runs Crohamhurst at crohamhurst.app. This Privacy Policy explains what personal information we collect, what we do with it, and how we protect it. We operate under the Privacy Act 1988 (Cth) and the Australian Privacy Principles (APPs).
By using Crohamhurst you agree to the practices described here.
When you register, we collect your email address and a hashed password. We don't collect your name at registration unless you choose to provide it in a contact form.
If you subscribe to a paid plan, payment is handled by Stripe (Stripe Payments Australia Pty Ltd). We never see or store your card number, CVV, or bank details. The only things we get from Stripe are:
Stripe handles the rest under their own privacy policy: stripe.com/au/privacy.
We log the following for each computation request to enforce daily allowances and detect abuse:
We do not log the specific prices or dates you submitted for analysis.
When you upload a CSV file, the price data is processed in memory for your computation and is not stored on our servers after the response is returned. We don't keep, analyse, or share your uploaded market data.
If you contact us through the website form or by email, we keep your name, email address, and message for the purpose of responding and for our records. We hold this data for up to 3 years.
Our web server logs standard request data including IP addresses, browser type, and request paths. These logs are kept for up to 90 days and are used for security and debugging. We don't use IP addresses to identify you or build profiles.
We do not use your information for advertising, profiling, or selling to third parties.
We don't sell, rent, or trade your personal information. We only share it in these situations:
Your data is stored on servers in Australia. We take reasonable steps to protect your information from unauthorised access, loss, or disclosure:
No electronic system is 100% secure. If a data breach occurs that may affect your personal information, we will notify you and the Office of the Australian Information Commissioner (OAIC) as required under the Notifiable Data Breaches scheme.
Under the Australian Privacy Principles, you have the right to:
To do any of these, contact us at privacy@crohamhurst.app. We'll respond within 30 days.
If you're not happy with our response, you can take it to the Office of the Australian Information Commissioner (OAIC) at oaic.gov.au.
Crohamhurst uses a single login token stored in your browser's localStorage to keep you signed in. This is not a cookie and is not shared with any third party. We don't use third-party analytics, advertising pixels, or tracking scripts.
Crohamhurst is not for anyone under 18. We don't knowingly collect personal information from children. If you believe we have done so accidentally, contact us and we'll delete it promptly.
We may link to Stripe's portal and other external websites. We're not responsible for their privacy practices. Check their policies separately.
We may update this Privacy Policy from time to time. We'll post the updated version here with a new effective date. For significant changes, we'll email you at the address on your account.