Privacy Policy
Last updated: February 2026
Who we are
WealthOwl is operated by Wealth Owl Limited. If you have any questions about this privacy policy or how we handle your data, contact us at privacy@wealthowl.co.uk.
What we store
WealthOwl stores two things in your browser's localStorage:
- Your dark mode preference
- Calculator input values (so your figures persist between visits)
All calculations happen entirely in your browser. None of this data is ever sent to our servers or to any third party.
URL state
Calculator values are encoded in the page URL so you can share or bookmark your results. This data stays in your browser and is never transmitted to us.
Legal basis
We store your preferences under legitimate interest (GDPR Article 6(1)(f)). Remembering your settings makes the tool work properly between visits.
Cookies
We do not use cookies.
Third parties
We do not share your data with any third party. We do not use any external analytics or advertising services.
Data retention
localStorage data persists until you clear your browser data. We hold no data on our servers.
Your rights
Because all data is stored locally in your browser, you are already in full control of it. To exercise your right to erasure, clear your browser's localStorage or use your browser's “Clear site data” option. To access your data, open your browser's developer tools and inspect localStorage.
For any other enquiries, email privacy@wealthowl.co.uk.
Children
WealthOwl is not directed at children under 13.
Changes to this policy
We may update this policy from time to time. We'll update the “last updated” date at the top of this page when we do.