Privacy Policy.

Last updated 9 September 2026

Courtside is a tennis app for your phone and Wear OS watch. We keep the data we collect small and boring on purpose. This page explains what we hold, why, and how you stay in control. Courtside is operated by Michal Vondra, Křižíkova 176/27, Prague, Czech Republic, Business ID (IČO) 87343401 — the data controller for everything described here. Reach us any time at info@courtside.cz.

Using Courtside without an account

You can browse schedules, results and live scores without signing in. In that case we only hold an anonymous device record and, if you enable notifications, a push token — never your name or email. You can clear it whenever you like: Settings → My data → Delete my data, no account needed. That erases what we hold for this phone — the matches and players you follow, your draw reminders and your notification history — and leaves the app working. Keep using it and a fresh push token is registered, so alerts still reach you.

What we collect and why

• Account — if you sign in with Google, we store your email and a Google account identifier so we can recognise you and sync your stars and alerts across your phone and watch.
• Push token — a Firebase Cloud Messaging token for your device, so we can deliver live scores and the alerts you asked for.
• Your picks — the matches and players you follow and your alert preferences. This is the app doing its job.
• Your device's time zone — so match times show in your local time, and alerts don't arrive in the middle of your night.
• Subscription — if you go Pro, we record what you're entitled to and until when, plus the payment records the store sends us. We never see your card.
• Marketing consent — only if you opt in. Off by default, and you can switch it off any time in Settings. It lets us send you tennis tips and occasional offers by notification or email. We record when it was granted, when it was withdrawn, and which wording you agreed to.
• Diagnostics — crash reports to help us fix bugs. These carry technical details, not your identity, and we don't use advertising or analytics trackers.
• What you write to us — if you send feedback or report a wrong score, we get the text you typed. Your email address stays out of it, so we can't write back; leave it in the message only if you want us to have it.

Legal basis (GDPR)

• Providing the app — performance of our agreement with you and our legitimate interest in a working product.
• Marketing messages — your consent, whether they reach you by notification or email, which you can withdraw at any time.
• Payments and subscriptions — performance of our agreement with you, and our legal obligation to keep accounting records.

Who we share it with

We don't sell your data. We use a small set of processors to run the app:

• Google Firebase — sign-in and push notification delivery.
• Sentry — crash and error diagnostics.
• Our hosting provider — runs our servers and database in the EU.

Match schedules, draws and scores come from the tours' own public sources. We fetch them ourselves — nobody on that side receives any of your personal data.

How long we keep it

• Your account — we keep it until you delete it.
• Your device — if a device doesn't contact us for a year, say because you uninstalled the app, we delete its record and everything it held: the matches and players you follow, your draw reminders and your notification history.
• An account left with no devices — erased along with the last one, unless your marketing consent is still active. In that case we keep only your email address and the record of that consent, so we can write to you as you asked. Ask us to delete you and that goes too.
• Notification delivery logs — up to 30 days for reliability, then removed automatically. The queue we send them from keeps a device reference for the same 30 days; it's what stops us sending you the same alert twice.
• Payment records — kept for as long as accounting law requires, but detached from you when you delete your account.
• Backups — we back the database up nightly and keep a week of them, so anything you delete can survive in a backup for up to seven days before it ages out.

Your rights

You can, at any time:

• Export your data — Settings → My data → Export my data.
• Delete your account — Settings → My data → Delete account, or see how to delete your account. It's permanent and starts you from scratch.
• Delete your data without an account — if you never signed in: Settings → My data → Delete my data. Signed in? Delete the account instead — that covers every device.
• Withdraw marketing consent — Settings → Notifications → News and tips. If you no longer have the app, email us and we'll erase you.
• Ask us for access or correction by emailing info@courtside.cz.

If you're in the EU, you also have the right to complain to your local data protection authority.

Children

Courtside isn't directed at children under 13, and we don't knowingly collect their data.

Changes

If we change this policy, we'll update the date above and, for anything material, let you know in the app.