Doomsday Ark · As of October 2026

Privacy policy

In short: without Pro we create no account and no profile. We show no ads and use no tracking and no analytics tools.

1. Controller

Hydra Ventures UG (haftungsbeschränkt), Mühlstraße 6, 93086 Wörth an der Donau, Germany. Email: contact@doomsdayark.com

2. Loading the situation view (all users)

When you open or refresh the app, it loads the current values from our server. Our service provider Make processes technically necessary access data: IP address, time, requested address and technical details of the connection. We do not analyse this data and do not link it to you. Make keeps logs of these requests for a few days only.

Legal basis: Art. 6(1)(f) GDPR. Our legitimate interest is running the app securely and reliably.

3. Pro subscription

You buy the subscription through Apple. We receive no payment data. Apple gives the app a signed confirmation of the purchase with product, term and transaction identifier. If you use alerts, our server uses it to check whether your subscription is active and asks Apple for the subscription status (App Store Server API).

Legal basis: Art. 6(1)(b) GDPR (contract). For the purchase itself, Apple's privacy policy applies.

4. Push alerts (Pro)

When you turn on alerts, we store:

• a random installation ID and a device key. Both are created by the app and contain no information about you
• your device's push token from Apple
• your settings: alert level, all-clear, quiet hours, Sunday report, time zone, language and app version
• the subscription status from section 3

Purpose: sending you alerts and the situation report. Apple delivers the notifications through the Apple Push Notification service and receives the push token and the text of the notification. Legal basis: Art. 6(1)(b) GDPR (contract).

5. What stays on your device

Language, whether you have seen the introduction, collapsed sections and a copy of your alert settings are stored on your device only. The installation ID and device key are kept in the iPhone keychain, so your alert settings can be restored after a reinstall. The keychain keeps them after the app is deleted, until you reset the device.

6. Service providers

• Make (Celonis), EU data centre: computes the situation view, provides the data, stores alert settings and sends alerts. Make acts on our behalf under Art. 28 GDPR.
• Apple: App Store, subscriptions and delivery of push notifications. Apple processes this data under its own terms, also in the USA.

7. Links to sources

The app opens links to sources in Safari. The privacy terms of the respective website apply there.

8. Retention

• Access data from section 2: a few days in Make's logs.
• Alert data from section 4: until you delete it in the Alerts tab, at the latest 30 days after your subscription ends.
• Data on your device: until you delete the app. For the keychain see section 5.

9. No sharing

We do not sell data. We share data only with the service providers in section 6 as far as the app needs it, or where the law requires it.

10. Your rights

You have the right of access (Art. 15 GDPR), rectification (Art. 16), erasure (Art. 17), restriction of processing (Art. 18), data portability (Art. 20) and to object to processing based on Art. 6(1)(f) (Art. 21). Write to contact@doomsdayark.com. You can delete your alert data in the app at any time. You can also lodge a complaint with a data protection authority.

11. This website

This website sets no cookies and loads nothing from third-party servers. Fonts are served from our own server. When you visit, our hosting provider Netlify, Inc., 512 2nd Street, Suite 200, San Francisco, CA 94107, USA, processes technically necessary access data such as IP address, time and page in server logs. Legal basis: Art. 6(1)(f) GDPR. Netlify acts on our behalf under a data processing agreement. Data may be transferred to the USA. The transfer is based on the EU-U.S. Data Privacy Framework (adequacy decision, Art. 45 GDPR), with EU Standard Contractual Clauses (Art. 46 GDPR) as a fallback.

12. Changes

When the app changes, we update this policy. The version published here applies.