Legal
Privacy policy
Last updated 27 July 2026
Sojourn Logbook is not yet released. This document is published ahead of launch so it can be reviewed, and so the app stores have something to point at. It takes effect when the app ships.
This policy explains what Sojourn does with your information in connection with Sojourn Logbook and this website. It is written to be read, not to be survived. If anything here is unclear, email support@sojourn-logbook.com and we will explain it.
1. The short version
Your logbook lives on your device. We do not hold a copy, we cannot read it, and we cannot recover it for you. The only personal data we hold is what you deliberately hand us: an email address for the launch waitlist, and any support correspondence you start.
2. Who we are
Sojourn ("we", "us") publishes Sojourn Logbook and operates sojourn-logbook.com. For any privacy question, contact privacy@sojourn-logbook.com.
3. Your flight records
Flight records you enter or import — dates, aircraft, routes, times, crew roles, currency and licence details — are stored in a database on your device. They are not transmitted to us and are not stored on our servers.
This has a consequence you should understand before relying on the app: we cannot restore your logbook. If you lose your device and have no export, the record is gone. The app will let you export your complete record at any time, and we strongly recommend you do so regularly.
4. What we do collect
Waitlist email addresses
If you submit your email address on this website, we store that address so we can tell you when the app is released. We do not use it for anything else, we do not sell it, and we do not add it to a newsletter. You can have it deleted at any time — see Delete your data.
To limit abuse of that form we briefly record a derived, non-reversible value based on your IP address as a rate-limiting counter. It expires within minutes and is not used to identify you.
Website analytics
This site keeps first-party, cookieless counts of page views. Visitor identifiers are salted, rotate daily and cannot be reversed. There are no advertising trackers, no third-party analytics and no cross-site profiling.
Support correspondence
If you email us, we hold that email and our reply so we can help you and keep a record of the issue.
App diagnostics
Where the app offers to send a diagnostic report, it is opt-in and shown to you before it is sent. We do not collect telemetry from your logbook contents.
5. Legal basis (UK and EU visitors)
- Consent — joining the waitlist. Withdraw it at any time by asking us to delete your address.
- Legitimate interests — keeping the site up, preventing abuse of our forms, and keeping aggregate visitor counts. We have balanced these against your rights and use the least intrusive method we can.
- Contract — providing support and the app itself once you subscribe.
6. Who else is involved
We keep this list short on purpose.
- Cloudflare — hosts this website and the small service behind the waitlist form.
- Postmark — sends the waitlist confirmation and launch email.
- Apple and Google — distribute the app and handle all subscription billing. We never see your payment details.
We do not sell personal data, and we do not share it for advertising.
7. How long we keep things
- Waitlist addresses — until the launch email has been sent, or until you ask us to delete yours, whichever comes first. We will not keep the list running as a mailing list afterwards.
- Support correspondence — up to 24 months, then deleted.
- Rate-limit counters — minutes.
- Aggregate page counts — retained in aggregate; they contain no personal data.
8. Your rights
Depending on where you live you may have the right to access, correct, delete, restrict or object to our use of your personal data, and to receive it in a portable form. Because the only data we hold about you is an email address and any correspondence, these requests are usually straightforward. Email privacy@sojourn-logbook.com and we will respond within 30 days.
If you are in the UK or EU and believe we have handled your data improperly, you may complain to your national supervisory authority. We would appreciate the chance to fix it first.
9. International transfers
Our service providers operate globally, so the limited data described above may be processed outside your country. Where required, transfers are covered by appropriate safeguards such as standard contractual clauses.
10. Children
Sojourn Logbook is a professional tool and is not directed at children. You must be at least 16 to use it, or older where your jurisdiction requires it.
11. Security
Traffic to this site and to our waitlist service is encrypted in transit. The strongest security property here is structural rather than procedural: the sensitive data — your logbook — is never in our custody in the first place. To report a vulnerability, email security@sojourn-logbook.com.
12. Changes
If we change this policy we will update the date at the top, and for material changes we will say so plainly rather than quietly re-dating the page.