Privacy
What advjourn stores about you, where it's kept, what is sent elsewhere and when, and how to delete it. Last updated 7 November 2026.
What's stored in your account
- Sign-in details: your email address and a securely hashed password, handled by Supabase Auth. We never see or store your password itself.
- Profile: a display name (taken from the part of your email before the @) and when you joined.
- Trades: everything you enter when logging a trade: instrument, direction, setup, result, P&L, whether you followed your plan, emotions, notes, and the date and time it was logged.
- Screenshots: if you add one, a resized copy (at most 1100 pixels wide) and a small thumbnail. The original photo never leaves your device; it's shrunk in your browser first.
- AI reviews: the text of each review you ask for, which day or week it covers, and how many trades and screenshots it used.
- AI usage: when each review was made, which AI model wrote it and how many tokens it used. This enforces the weekly review limit.
Where it's kept and who can see it
Your data is stored with Supabase (database and file storage). Database security rules mean only your signed-in account can read or change your trades, reviews and usage. Screenshots sit in a private folder named after your account, and are shown to you through links that stop working after an hour.
The app runs on Vercel. Supabase and Vercel, as hosting providers, may keep standard technical logs (such as IP addresses and request times) and backups under their own policies.
What's sent to the AI service, and when
Nothing is sent unless you tap the button to write a review. Then it goes to Anthropic's API:
- Day review: that day's trades as you entered them, including notes, and up to 10 of that day's screenshots.
- Week review: the week's statistics, summaries of that week's saved day reviews, and three chosen trades with their notes and screenshots.
Your email address and account details are not sent. Anthropic processes these requests under its own privacy policy.
On your device
- Sign-in cookies, which keep you signed in. They're required for the app to work.
- Your theme choice (light or dark), saved in your browser.
- Offline files: when installed or used in production, the app caches its own code, icons and an "offline" page so it can tell you when there's no connection. It does not cache your trades, reviews or screenshots.
There are no ads, analytics or tracking scripts in this app.
Deleting your data
Account → Delete account permanently removes your account, every trade, every screenshot and thumbnail, all AI reviews and your AI usage history. Screenshots are deleted first; if that fails, nothing else is deleted and you can try again. Copies may remain in the hosting providers' backups until those expire.
You can also delete single trades (with their screenshots) from the trade list at any time.
Not financial advice
advjourn helps you record and reflect on your own trades. Its statistics and AI reviews describe your past trades, can be wrong, and are not recommendations to buy, sell or hold anything.