Privacy Policy

The short version

We cannot see you play. The game keeps your licence, your logbook and every shift you have flown in a single file on your own device. It is never uploaded, and we have no server that could receive it. The only information that leaves your device at all is the receipt that tells the app whether you have paid, and Apple handles the payment itself.

This policy covers the Mayday Zero app for iOS (bundle identifier com.maydayzero.ios) and this website. It does not cover the App Store, which is Apple’s product and is governed by Apple’s own privacy policy.

Who we are

Mayday Zero is made and published by Sylicons, an independent studio. For anything in this policy — including a request to exercise a data right — write to hello@sylicons.com. For help with the game itself, write to maydayzero@sylicons.com.

Where data protection law requires it, we are the data controller for the limited information described below.

What stays on your device

Everything the game remembers about you is written to one file in the app’s private Application Support folder. It stays there. No part of it is transmitted to us or to anyone else.

Your controller licence

A licence number generated on your device at first launch, the date it was issued, and a name — but only if you choose to type one. You can leave it blank and the game works exactly the same.

Your logbook

Each shift you finish: which case it was, the field, how long you held the position, your score, the competencies you were graded on, the findings written against you, and the radio transcript of that shift.

Progress

Commendations earned, training modules read, which debriefs you have opened, and when the app was last opened.

Two consequences worth being clear about. First, if your device is included in an iCloud or computer backup, this file is part of that backup — that backup belongs to you and your Apple Account, and we have no access to it. Second, because there is no account and no cloud save, deleting the app deletes your progress, and there is nothing we can do to restore it.

What happens when you buy

Mayday Zero offers optional purchases that unlock the full board. Payment is taken by Apple through your Apple Account. We never see, receive or store your card number, your billing address, or your Apple Account credentials.

To know whether this installation has an active subscription, the app uses RevenueCat, a purchase-management service. It receives the following, and only the following:

• An anonymous identifier created for this install. It is a random string. It is not your name, your email address, your Apple Account or your device’s advertising identifier, and it is not shared with anyone else.
• The App Store receipt for this install — which product was bought, when, in which storefront, and whether it is still active.
• Basic technical details needed to validate that receipt: device model, iOS version, app version, locale, and the IP address the request came from, which RevenueCat uses to work out the country and does not retain as a profile of you.

Why this exists at all. Without it, a subscription bought on your iPhone would not be recognised on your iPad, and restoring a purchase after reinstalling would be impossible. It is used to answer one question — has this install paid? — and nothing else.

Apple also gives us aggregated sales and download reports through App Store Connect. Those are counts and totals by country. They do not identify you and we cannot work backwards from them to an individual.

The services involved, and their own policies:

• Apple — Sells the app and processes every payment. Privacy policy
• RevenueCat — Tells the app whether this install has an active subscription. Privacy policy

What we never collect

This is a short list in most apps and a long one here, so it is worth spelling out. Mayday Zero contains:

• No analytics. There is no Firebase, no Google Analytics, no Amplitude, no Mixpanel and no crash-reporting SDK. We do not know which shifts you play, how far you get, or whether you finish them.
• No advertising. There are no ad networks, no ad identifiers and no tracking pixels. The app never asks for App Tracking Transparency permission, because it does not track you — not across our app, and not across anyone else’s.
• No account. There is nothing to sign up for. We do not ask for your name, email address, phone number or date of birth.
• No social or login SDKs. No Sign in with Apple, no Google, no Facebook, no Game Center, no leaderboards.
• No selling or sharing. We do not sell personal information, and we do not share it for cross-context behavioural advertising, as those terms are used in California law. We never have and the app has no mechanism to.

This website is equally plain. It is a static page served by Vercel. It sets no cookies, runs no analytics and asks for no consent, because there is nothing to consent to. Vercel records standard server request logs for security and reliability.

Permissions we never ask for

The game is played by tapping replies and listening. It does not use, and the app contains no code that could use:

• the microphone — you never speak to the game;
• speech recognition;
• the camera or your photo library;
• location services;
• contacts, calendars, reminders or health data;
• your network — other than the purchase check described above, the entire game, including every map and every recording, is inside the app and runs offline.

The App Store privacy label

Apple requires every app to declare its data practices on its App Store page. Ours says that the only data collected is Purchases and an Identifier, that both are used solely for App Functionality, and that neither is used to track you. Nothing is linked to your identity, because we do not know your identity.

Keeping and deleting

• Your save file is kept until you delete it. To erase it, delete the app from your device; to erase it and start again, delete the app and reinstall it. There is no copy anywhere else.
• Purchase records are kept by RevenueCat for as long as the entitlement could matter — a lifetime purchase has to remain restorable indefinitely — and by Apple according to Apple’s own policy and the tax and consumer-law record-keeping that applies to them.
• Email you send us is kept only as long as it takes to deal with your question, and then deleted.

If you want the purchase records associated with your install erased, write to hello@sylicons.com. We will need the anonymous identifier or the receipt to find them, and we will tell you if a record has to be kept for a legal reason.

Where information goes

Apple and RevenueCat are United States companies and process purchase data on servers in the United States and elsewhere. If you are in the United Kingdom, the European Economic Area or Switzerland, that is an international transfer, and it is made under the safeguards those providers maintain — standard contractual clauses and equivalent mechanisms, described in their own policies linked above.

Our lawful basis under the UK and EU GDPR for handling purchase data is performance of a contract — you bought something and the app has to honour it — and, for keeping records of that sale, compliance with a legal obligation.

Your rights

Depending on where you live, you may have the right to ask for a copy of the personal information we hold about you, to have it corrected or erased, to object to or restrict how it is used, to have it ported elsewhere, and not to be discriminated against for asking. You may also withdraw consent where we relied on it.

You can exercise any of these by emailing hello@sylicons.com. We do not charge for this and we will answer within one month, or sooner where the law requires it. In practice the honest answer to most access requests is that we hold nothing that identifies you — the information you are thinking of is the save file on your own device, which you already have.

If you are unhappy with our response, you can complain to the data protection authority for the country you live in. In the European Economic Area and the United Kingdom that is your national supervisory authority; elsewhere it is whichever regulator oversees privacy where you are.

Children

Mayday Zero is not directed at children. It is rated for a general audience but written for adults, and it contains simulated aviation emergencies. We do not knowingly collect personal information from anyone, which necessarily includes children. If you believe a child has provided us with personal information, write to us and we will delete it.

Changes, and how to reach us

If this policy changes we will update this page and change the date at the top. If a change is significant — if the app ever starts collecting something it does not collect today — we will say so in the app before it takes effect, not quietly on a web page.

Questions, corrections, or anything else: hello@sylicons.com. For help with the game itself, maydayzero@sylicons.com.