Privacy Policy
In short: crawl. works without an account. It stores your game progress, shows a public leaderboard, measures how the game is used, and shows optional ads. We don't sell your data. You can delete everything from inside the app at Settings › Delete account.
Who we are
crawl. is made by Nullset ("we", "us"), an independent developer based in Hungary. We are the controller of the personal data described here. Contact: nullset.studio@gmail.com.
What we collect and why
| Data | Why | Linked to you |
|---|---|---|
| A random user ID created when you first open the app (Firebase anonymous sign-in) | Save your progress and run the leaderboard | Yes |
| Game data: scores, levels, coins, unlocked items, settings, daily and weekly progress, streaks | Save your progress and sync it to the cloud | Yes |
| Your display name, active skin and title | Shown publicly on the leaderboard | Yes |
| Purchase history (which items you bought, not payment details) | Deliver and restore purchases | Yes |
| Usage events (e.g. a run started, a purchase made, a task completed) | Understand how the game is played and improve it (Firebase Analytics) | Yes |
| Device identifiers, including the advertising identifier (IDFA) only if you allow tracking, plus ad interaction data and approximate location derived from your IP address | Show rewarded ads and measure them (Google AdMob) | Yes when tracking is allowed |
| Technical and diagnostic data such as device model, iOS version, crash and performance information | Keep the app working | No |
We do not collect your precise location, contacts, photos, or payment card details. Payments are handled entirely by Apple.
Sign in with Apple (optional)
If you link your game in Settings, Apple gives us a private identifier so your progress can be restored on another device. We do not request your name or email address.
Ads and tracking
Ads in crawl. are optional: you choose to watch one for a second chance or a free booster. The first time you do, iOS asks whether apps may track you. If you allow it, Google AdMob may use your advertising identifier to personalize ads and measure them across apps. If you don't, ads are non-personalized. You can change this any time in iOS Settings › Privacy & Security › Tracking.
Who we share data with
- Google (Firebase) stores game data and the leaderboard (Cloud Firestore), provides anonymous sign-in, and measures usage (Analytics). Firebase privacy
- Google (AdMob) serves the rewarded ads. How Google uses data from apps
- Apple processes in-app purchases, Sign in with Apple and Game Center.
- Other players see your display name, score, skin and title on the leaderboard.
We don't sell personal data. We may disclose data when required by law or to protect our rights or users' safety. Google may process data outside the EU; such transfers are covered by the European Commission's Standard Contractual Clauses and the EU–US Data Privacy Framework.
Legal basis (EU/EEA users)
- Contract: saving progress, the leaderboard and delivering purchases are needed to provide the game.
- Legitimate interest: usage analytics, diagnostics and preventing cheating.
- Consent: personalized ads and tracking, which you give or refuse in the iOS tracking prompt.
How long we keep data
We keep your game data while you use the app. If you delete your account, your cloud save, leaderboard entry and user ID are deleted right away. Usage data in Firebase Analytics is deleted automatically after the retention period set in Firebase (2 months).
Your rights and choices
- Delete: Settings › Delete account removes your cloud data and account, and resets the game on your device.
- Reset: Settings › Reset progress clears the data stored on your device.
- Change your name on the leaderboard in Settings.
- Tracking: allow or refuse it in iOS Settings at any time.
- If you are in the EU/EEA you can also ask us for access to, correction, export or deletion of your data, object to processing, or withdraw consent, by emailing nullset.studio@gmail.com. You may also complain to your data protection authority; in Hungary that is the NAIH (naih.hu).
Children
crawl. is rated 4+ and is not directed at children under 13. We don't knowingly collect personal data from children under 13 (or under 16 in the EU without parental consent). If you believe a child has given us personal data, email us and we will delete it.
Security
Data is sent over encrypted connections and stored with Google Firebase. Access is limited by security rules so that only you can read your cloud save.
Changes
If we change this policy, we'll update this page and the effective date above.
Contact
Questions or requests: nullset.studio@gmail.com · Support