This policy covers the Evenreef iPhone app and the website at evenreef.com. Evenreef is run by Ilyas Kaizar Colombowala ("we" or "us"). Questions go to ilyas@colombowala.com.
In short
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You do not need an account. Your tank details, test results and dose logs are stored only on your device or in your browser.
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The AI advisor runs only after you agree to it, and then sends a summary of your tank to Anthropic to write the answer.
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No ads, no tracking across other companies' apps or websites, and we do not sell your data.
What stays on your device
Without an account, your tanks (name, volume and type), test results, dose logs and settings are stored only on your device in the iPhone app, or in your browser's storage on the website. We do not receive them. You can remove them by deleting a tank in Settings, by deleting the app, or by clearing this site's data in your browser.
Optional account and sync
Accounts are not open yet. When they open, an account will be optional. You will sign in with your email address and a one-time code, handled by Supabase, our database provider. Once you sign in, your tanks, test results and dose logs are synced to our database so they are available on your other devices.
AI advisor
The advisor works only after you agree to it in the app. Each time you ask a question, the app sends a summary of your tank (volume, type, products, recent tests and doses), your question and the earlier messages in that conversation through our server to Anthropic, which runs the Claude model that writes the answer. Under Anthropic's Commercial Terms of Service, Anthropic may not train its models on this content.
To enforce usage limits, the app sends a random ID, generated on your device, with each advisor request. Our server combines it with your IP address and keeps only a one-way hash of the two, never the ID or the address itself.
If you send feedback on an answer, such as a problem report, we keep it for 180 days to review it. It holds your rating, any comment you write, your question and a summary of the answer.
Shop links
Buy links pass through our server so we can send you to the Amazon store for your country. For each click we log the product, the storefront, the country the request came from, where the link was, and whether it came from the website or the app. We do not log your IP address or any other personal identifier. Once you are on Amazon, Amazon's own policies apply.
Subscriptions
Evenreef Plus is sold and billed by Apple, so we never see your payment details. RevenueCat, which manages subscriptions for us, receives your purchase receipts and an anonymous app user ID to confirm what you have bought.
Hosting
The website and our API run on Cloudflare. Like any web host, Cloudflare handles your IP address in order to deliver pages and requests.
What we do not do
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We show no ads.
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We do not track you across other companies' apps or websites.
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We do not sell your data.
Children
Evenreef is not directed to children under 13, and we do not knowingly collect personal information from them.
Changes and contact
If this policy changes, we will update it here and change the effective date above. For questions or requests about your data, email ilyas@colombowala.com.