Privacy
Last changed 10 November 2026.
Phan Vu Chau makes Rearview. This page says what we learn about you, and from where. Write to support@rearview.page with any question. We don’t sell your information or use it for advertising.
The app
Rearview has no account and collects nothing about you. There is no telemetry, no usage tracking and no analytics. Your strategies, data and results stay on your Mac, and your licence is checked on your Mac without contacting us.
- Update checks. Rearview asks once whether to check for updates automatically, and you can also choose Rearview ▸ Check for Updates…. A check asks our website (see below) whether a newer version exists. Like any web request, it carries your IP address, along with the app’s version and its updater’s. It carries nothing else, and we don’t use it to identify you.
- Reports you choose to send. Report a Wrong Result makes a file with your script, its settings, the run’s figures, the names, tickers and sectors of the securities it traded, a fingerprint of your data, the engine and macOS versions, and your note. It holds none of your data’s bars, and the trade list, with its prices, only if you tick the box for it. For a live account it also holds your broker fills and statement lines. Export Diagnostics makes a file of facts about your data, such as counts, dates and where quality findings are, with no prices. Neither goes anywhere unless you send it to us.
- Crash reports you choose to send. If Rearview or its engine quits unexpectedly, the next time you open Rearview it offers a crash report: macOS’s crash report, the end of the engine’s log, and the app and macOS versions. It holds no scripts, data or results, but it can include file paths, such as your project folder’s name, and your Mac’s model, because macOS puts them in its crash reports. Save it first if you want to read it. It goes nowhere unless you save it or email it to us yourself.
This website
The site sets no cookies and runs no analytics or tracking scripts. Our host, Cloudflare, handles every request to the site and may keep standard request logs, such as IP addresses and browser types, under its privacy policy.
The waitlist
You join the waitlist by emailing us. We keep your email address and what you write, such as the tool you test with and how you found the site, and use them only to tell you when Rearview goes on sale. Once we have, we delete the waitlist, and you can ask us to delete your entry sooner.
Buying Rearview
FastSpring sells Rearview to you as the merchant of record. It collects your payment details, your billing address and your email address under its own privacy policy, keeps order records for as long as tax law requires, and tells us your name, your email address and what you bought. We use them to send your licence, to put your name on the reports you export, and to answer you.
Buying and renewing happen on FastSpring’s checkout, which may set cookies of its own. Renew Updates… in the app opens this website with your order number in the address, so the renewal is for the right licence.
When you write to us, we keep your messages so we can help you, and delete them on request. Mail to us passes through Cloudflare, which forwards it, and is kept in Google’s Gmail; our replies go out through Amazon Web Services. Each handles it under its own privacy policy: Google’s, Amazon Web Services’.
Your rights
You can ask us what we hold about you, and ask us to correct it or delete it. Write to support@rearview.page. If you live in the European Union or the United Kingdom, you can also complain to your data protection authority.
Changes
If this policy changes, the date at the top of this page changes with it.