Zephyr is a flight deal scout for European travelers looking for business class fares worth booking. We keep what we hold on you to the minimum needed to do that job.
When you sign up and use Zephyr, we hold:
No analytics trackers, no advertising pixels, no data brokers, no third-party cookies. We don't sell or rent your data, and we don't ship it to marketing platforms.
The only third party that touches your data in transit is Apple — we hand them a push token so they can deliver notifications to your device. That's how APNs works for every iOS app.
Everything sits in our Supabase Postgres database, hosted in the EU. Backups are kept for around 30 days. The pipeline that finds deals runs on Railway and only ever talks to our own database.
You can change your name, home airport, language, and notification preferences at any time from Settings. You can delete your entire account and every record we hold on you from the same screen — Settings → Account → Delete account. Deletion is immediate and unrecoverable.
If you'd rather request something by email, write to privacy@flyzephyr.app and we'll handle it within seven days.
When we point you toward an airline or online travel agency, we sometimes earn a commission if you book. That never changes the price you see, and it never decides which deals we surface — scoring is based on price relative to historical medians, nothing else.
If we ever change how this works in a way that affects you, we'll let you know inside the app and update the date at the top of this page.