Privacy policy
Last updated October 23, 2026
We, the team behind Luck Filter, are responsible for your data. We collect what the service needs to work, use it only for that, and never sell it.
What we keep
- Your account: email, name, and, if you give it, your country.
- Your brokerage history, if you connect a broker: the transactions, holdings and balances it shares with us read-only, and the figures we work out from them. We never see or store your broker password, and we cannot trade or move money.
- Your plan: which plan you are on and when it renews. Paddle keeps your card and billing address; we only receive a customer number, the plan and its status.
- On Pro: the guide's reviews and the questions you ask it.
- What you send us: problem reports and emails.
What we use it for
To work out and show your figures, keep them up to date, run your plan and billing, answer you, and fix problems. We do not sell your data, show ads, or use tracking or advertising cookies.
Who handles it for us
- Supabase stores your account, your broker history and the figures worked out from it, and handles logging in.
- Vercel runs the website.
- Railway runs the machine that reads your broker history and works out your figures.
- Resend sends our emails to you, such as a reminder before a trial or a yearly plan is charged.
- SnapTrade connects to your broker, read-only, when you choose to connect one.
- Paddle takes payments as our reseller and merchant of record: your card and billing address go to Paddle, not to us.
- Anthropic on the Pro plan, writes the guide's reviews and answers from your figures. Your name and email are not sent, and Anthropic's terms for business customers say it does not train its models on this data.
These services may store data outside your country, including in the United States and Japan, under their own security and data-protection terms.
Cookies
Only the ones the site needs: keeping you logged in, which of your accounts you are looking at, and whether you hid the sidebar. No analytics, advertising or tracking cookies.
How long we keep it
As long as your account is open. Delete your account under Your account, then Login & security: that closes your broker connections and deletes everything we hold for you straight away, and the copies of your broker history on our processing machine within a few days. Backups roll over within 30 days. Paddle keeps payment records for as long as tax law requires.
When your plan ends (at the end of the period you paid for, or of your free trial), we close your broker connection within the hour and stop reading from your broker. Your saved history and figures stay until you delete your account; connecting again brings them up to date.
Your rights
You can see, correct, export or delete your data. Most of it you can change yourself in Your account; for a copy of everything, or anything else, write to support@luckfilter.com. If you are unhappy with how we handle your data, you can also complain to the data-protection authority where you live.
Keeping it safe
Everything travels encrypted. The database lets each person read only their own rows. We never see your broker password: you log in at your broker through SnapTrade, and the connection can only read.
Children
Luck Filter is for people aged 18 and over.
Changes
If we change how we handle your data in a way that matters, we will tell you before it takes effect. See also the terms of service.