Privacy Policy
Last updated: August 29, 2026
WebMemo (app.easymoat.com) and MarketWatch Max are services operated by Easymoat (sole proprietor: Yoshicchi), Japan. This policy explains exactly what data these services handle. The MarketWatch watch app itself has its own policy on the MarketWatch page.
1. What we do NOT collect
- No email address, name, postal address or phone number
- No advertising identifiers, no analytics SDKs, no tracking cookies
- No location data
- No card numbers — MarketWatch purchases are processed entirely by Stripe
2. Your account
Signing in takes your MarketWatch license key and your watch's Device ID. That Device ID is the account. It is a random identifier of the watch, not of you as a person.
3. What is stored on our server
To sync between your browser and your watch, our server stores, keyed to your Device ID:
- Portfolio contents: tickers, and — only if you choose to enter them — cost basis, quantity and memos
- Portfolio names and display settings (colors, section order, Markets selection and alert threshold)
- Net-worth history derived from the values above
Entering amounts is optional. Without cost basis or quantity, WebMemo works as a watchlist and no financial amounts of yours exist anywhere on our server.
4. Memo tabs and attachments
Memo tabs are stored on our server so the same notes appear on every device you sign in from. File attachments, when the feature is available, are stored the same way (up to 10 MB per file, with a per-account cap) and are visible only to your account.
5. Market data
Prices come from Yahoo Finance's public API. Requests are made by our server, so Yahoo receives the tickers being looked up but nothing that identifies you — not even your IP address.
6. Server logs
Operational logs record Device IDs and request outcomes for troubleshooting. Portfolio contents are not written to logs.
7. Hosting
Data is stored on Render's cloud infrastructure and encrypted in transit (HTTPS). Servers may be located outside your country.
8. Taking your data out, and deleting it
Nothing is locked in. Export in the header writes all of your portfolios to a single CSV file at any time — the same file can be read back with Import, so you can keep your own copy or move it elsewhere whenever you like.
Your data is kept while you use the service. You can erase it yourself at any time: sign in to WebMemo and use Delete all my data at the bottom of the page. This immediately and permanently removes your portfolios, memo tabs, asset classes, net-worth history, display settings and any attachments from our server. Your MarketWatch license is unaffected, so you can sign in again and start over. If you prefer, email your Device ID to easymoat@gmail.com and we will do it for you. Since we hold no email address or name, there is nothing else to erase.
9. Changes
Material changes to this policy will be reflected in the date at the top. Continued use after a change means acceptance.
10. Contact
Questions and requests: easymoat@gmail.com