Privacy policy

For the Purzel app and the website purzel.jonasschaude.com · Last updated: November 2026

In short

• Purzel needs no account and shows no ads.
• The app contains no tracking or analytics tools and sends no data to us.
• Your progress and settings are stored on your device only.
• If you use Game Center, the app sends your scores to Apple so they appear on the leaderboards. We receive none of it.
• We only receive personal data if you choose to email us.

Controller

Data in the app

Stored on your device

So you can pick up where you left off, Purzel stores on your device: your best score in endless, your adventure results (stars and best score per level), your daily puzzle results and daily streak, your marbles, unlocked looks and helpers in stock, and your settings (sound, haptics, reduce motion, language, chosen look, reminder and time). This data is not sent to us. Deleting the app removes it. If you back up your device via iCloud or otherwise, this data is part of your backup – as with any app.

No ads, no tracking

Purzel uses no advertising networks, no analytics or tracking services and no cross-device identifiers. The app needs no internet connection to play. If you tap Help, Privacy policy or Legal notice in the settings, this website opens in a browser window; “Rate Purzel” leads to the App Store. In the start menu Purzel reacts to a shake: for that the app reads the motion sensor only while the menu is open and stores none of it. The rating prompt Purzel occasionally shows after a good round comes from Apple; we don’t learn whether or how you rate.

Leaderboards (Game Center)

Purzel offers leaderboards through Game Center, a service by Apple. If you are signed in to Game Center on your device, the app signs in in the background at launch and sends your endless best score, your daily puzzle points and your number of adventure stars to Game Center, where other players can see them together with your Game Center name. Purzel only reads whether you are signed in; we receive neither your name nor your scores. If you are not signed in, nothing is sent. Apple’s processing is covered by Apple’s Game Center privacy information. You can sign out of Game Center or turn it off for Purzel in your device settings at any time.

Daily puzzle reminder

If you turn on the reminder in the settings, Purzel asks for permission to send notifications and schedules the reminders for the coming days on your device. There is no server sending messages; content and time never leave your device. You can turn the reminder off at any time.

Sharing

When you share your daily puzzle result, your device’s share sheet opens – you decide what to share and with whom; we receive nothing. The shared text contains only the date, your points and an emoji grid.

App Store

Purzel is distributed through Apple’s App Store, test versions through TestFlight. When you download it, Apple processes data such as your account information under its own responsibility. If you agreed in your device settings to share analytics with app developers, Apple provides us with aggregated statistics and crash reports that cannot be traced back to you; in TestFlight you can also choose to send us feedback and screenshots. See Apple’s privacy policy for details.

Contact by email

If you write to us, we process your email address and the content of your message to reply and fix problems. If you write via “Send feedback” in the app, the app version and your device’s system version appear below your message (for example “Purzel 0.1.0 (1) · iOS 26.1”); you can delete them before sending. The legal basis is Art. 6(1)(f) GDPR (our legitimate interest in answering requests) or Art. 6(1)(b) GDPR. We delete your message once it has been dealt with, unless legal retention obligations apply.

Our mailbox is operated by Microsoft (Microsoft 365, Microsoft Ireland Operations Limited, One Microsoft Place, South County Business Park, Leopardstown, Dublin 18, Ireland) on our behalf under a data processing agreement (Art. 28 GDPR). A transfer to the USA cannot be ruled out; it is based on the EU-US Data Privacy Framework, under which Microsoft is certified (Art. 45 GDPR).

This website

The website uses no cookies, no analytics and loads nothing from third-party servers; fonts and images are delivered with the site. If you switch the language using the link at the top of the page, your browser remembers this choice in local storage; this information never leaves your browser.

When you visit, our hosting provider processes technically necessary data (IP address, date and time, page requested, browser information) in server log files to deliver the site and protect it against abuse. The legal basis is Art. 6(1)(f) GDPR.

Our hosting provider is Vercel Inc., 440 N Barranca Ave #4133, Covina, CA 91723, USA, acting on our behalf under a data processing agreement (Art. 28 GDPR). The transfer to the USA is based on the EU-US Data Privacy Framework, under which Vercel is certified (Art. 45 GDPR). How long Vercel keeps log data is described in Vercel’s privacy policy.

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 legitimate interests (Art. 21). Just write to purzel@jonasschaude.com.

You can also lodge a complaint with a data protection authority. The authority responsible for us is:

Children

Purzel is suitable for all ages. As the app sends no personal data to us, we do not process any data of children.

Changes

As Purzel evolves, we will update this policy. The version published here applies. The German version is legally binding.