Privacy Policy
Effective July 17, 2026
Sparkheim is a Magic: The Gathering collection app for iPhone, made by an independent developer. This page explains what data the app touches and what happens to it. The short version: your collection lives on your phone, we run no accounts, and the only personal data processing worth talking about comes from the ads shown to free users.
No accounts
Sparkheim has no sign-up, no login, and no user profiles. We do not know who you are.
Your collection stays on your device
Binders, decks, brews, lists, notes, and sleeves are stored in a database on your phone. They are not uploaded to us. If you delete the app, that data is deleted with it.
iCloud backups
If you use the backup feature, your collection is written to your personal iCloud storage under your Apple account. It travels between your device and Apple; we cannot read it, and it never passes through our servers. Apple's privacy policy governs iCloud.
Deck sharing
When you share a deck, the deck list (card names, quantities, and the deck's name) is uploaded to our server so the link works for the person you send it to. A shared deck contains no personal information and is readable by anyone who has the link. Your IP address is used briefly to limit abuse of the sharing service and is not stored with the deck. If you want a shared deck taken down, email us the link.
Advertising
The free version shows ads served by Google AdMob. To do that, Google and its advertising partners may process data from your device, such as device identifiers, IP address, general location, and how you interact with ads.
- In the European Economic Area, the UK, and Switzerland you are asked for consent before any of this happens, and ads respect your answer.
- On iOS, personalized ads also require your permission through Apple's App Tracking Transparency prompt. Decline it and ads stay non-personalized.
- You can change your answer any time in the app under Settings, "Ad privacy options".
- Sparkheim Pro subscribers see no ads, and the app requests none for them.
How Google uses this data is described in Google's privacy and terms.
Purchases
Subscriptions are handled entirely by Apple through the App Store. We never see your payment details. Apple provides us anonymous receipts so the app knows Pro is active.
Card data and images
Card information, images, and prices come from public card databases such as Scryfall. When the app fetches a card image, your device talks to those services directly, which exposes your IP address to them like any web request. Their privacy policies apply to those requests.
Crash reports and analytics
If the app crashes, a technical report (the crash's stack trace, app version, iOS version, and device model) is sent to Sentry, a crash reporting service, on servers in the European Union. Crash reports carry no name, no account, and nothing about your collection; they exist so crashes get fixed. Beyond that there are no analytics: the app does not track what you do in it.
Children
Sparkheim is not directed at children under 13, and we do not knowingly process children's data.
Your rights
Under the GDPR and similar laws you can ask what data we hold about you, and ask for it to be corrected or deleted. Because the app keeps your data on your device, in most cases the answer is that we hold nothing; deleting the app removes your data, and the section above covers shared decks. For anything else, write to us.
Contact
Questions about this policy or your data: hello@sparkheim.app
Changes
If we change how the app handles data, this page changes with it, along with the date at the top.