Bubble Masters
Privacy Policy
Durn Studio UG ("we", "us") operates the mobile game Bubble Masters (the "App"). This Privacy Policy explains what data the App collects, how we use it, and the rights you have over it.
1. Data we collect
1.1 Automatically collected
- Device identifiers. iOS IDFV / Android advertising ID (where permitted), device model, OS version, language, timezone, and country.
- Gameplay telemetry. Levels reached, scores, matches played, session length. Stored locally on your device and, in aggregate, on our servers to power leaderboards.
- Crash + performance data. Stack traces and device state when the App crashes, so we can fix bugs.
- Ad interactions. Which ads were shown, whether they were clicked. Used to prevent ad fraud and report revenue to our ad partners.
1.2 You provide directly
- Purchase records. When you buy coins, hearts, or Pro, Apple / Google handle the payment and share a receipt with us via RevenueCat. We do not see your card details.
- Support requests. If you email us, we store that email address and your message for as long as it takes to help you.
2. How we use it
- Run the game and sync your progress across devices.
- Power global leaderboards and daily challenges.
- Show and attribute ads (for the free tier).
- Detect and prevent cheating, ad fraud, and abusive accounts.
- Understand which features are used, and improve them.
3. Third parties
We share specific data with the following service providers. Each is contractually limited to the purposes listed below and cannot use the data for their own marketing.
3.1 Ads
- Appodeal (ad mediation) — receives device ID, ad ID, and ad interaction data to serve and measure ads.
- AppLovin / AdMob / Meta Audience Network / others — Appodeal's downstream ad networks may receive the same data. The full up-to-date list lives in /app-ads.txt.
3.2 Attribution
- AppsFlyer — receives device identifiers and event data so we can measure which marketing campaigns bring new players.
3.3 Purchases
- RevenueCat — receives the transaction ID and product identifier when you purchase in-app items, and issues the entitlement that unlocks them. RevenueCat never sees your payment method.
3.4 Hosting + analytics
- Railway — hosts our gameplay server (leaderboard sync). Receives IP addresses and gameplay events.
- Vercel — hosts this marketing site. Receives standard web-server logs (IP, page requested, user-agent).
4. App Tracking Transparency (iOS)
On iOS the App asks for permission to use your device identifier for advertising via the system ATT prompt. You can say no — the game still works, you'll just see non-personalised ads and campaign attribution will be less precise. You can change your answer anytime in Settings → Privacy & Security → Tracking.
5. Children's privacy
Bubble Masters is rated for ages 4+ but is not specifically directed at children under 13. We do not knowingly collect personal data from children under 13. If you believe a child has provided us personal data, contact us at the address below and we'll delete it.
6. Your rights
Under GDPR (EU/UK) and CCPA (California) you have the right to:
- Know what data we hold on you.
- Ask us to correct or delete it.
- Opt out of data sale (we don't sell it, but the right exists).
- Withdraw ad-tracking consent at any time.
To exercise any of these rights, email us at hi@bubblemastersultimate.com. We respond within 30 days.
7. Data retention
Gameplay data is kept as long as your device is linked to an active player account (anonymous by default). If you haven't opened the App in 24 months we deprovision the account and delete the associated leaderboard rows.
8. Changes
We'll update this page if we materially change how we handle your data, and bump the "Last updated" date at the top. For anything significant, we'll surface a notice inside the App too.
9. Contact
Durn Studio UG
Berlin, Germany
Email:
hi@bubblemastersultimate.com