Day One is an Ardenholt program operated by Ruzylo Cloud, LLC. This sheet describes what we hold, why, and your rights over it.
What we collect
- Your email address — only if you enter the register or buy. Used to write to you about Day One, and nothing else.
- License keys and receipts — if you buy, so that we can prove what you own when you unlock the app.
- An authentication identifier — if you choose to sign in. With Sign in with Apple we store the opaque identifier Apple gives us and never receive your real address unless you share it.
- Standard server logs — IP address, user agent, request path, kept no longer than thirty days for security and debugging.
- Payment details — handled entirely by our payment processor. We never see or store a card number.
What we do not collect
Your count. Your entries. Your dates. The habit you are counting away from — which the app never asks for in the first place.
All of that is written on your device and stays there. There is no sync, no backup of it on our side, and no server of ours holding it, which means we cannot read it, cannot restore it, and cannot be made to hand it over. If a sync feature is ever built, it will be opt-in and it will say so before it moves a single day.
What we will not do
- We do not sell your data. Ever.
- We do not run third-party advertising trackers.
- We do not use your content to train any model.
- We do not share your data with brokers.
Where the little of it lives
Register addresses, receipts and license keys are stored on our hosting provider's infrastructure in the United States. Our payment processor stores payment data under its own policy, and Apple stores Sign in with Apple credentials under Apple's.
Your rights
All four go to [email protected]. Because your count is not ours, an export from us will be short: an address, a receipt, a key.
- Access — write to us and we send a copy of everything we hold on you within thirty days.
- Deletion — the same, and we delete within thirty days unless a law requires us to keep a billing record.
- Correction — the same address, or change it in the app where that applies.
- Portability — exports come as JSON or CSV.
Children
Day One is not intended for children under 13, or under 16 in the EU, and we do not knowingly collect data from them.
Changes
If this sheet changes materially we will update the effective date at its head and write once to anyone on the register.
Contact
[email protected] — Ruzylo Cloud, LLC, Thousand Oaks, California.