Privacy Policy

Effective date: May 4, 2026 Last updated: May 4, 2026

This Privacy Policy describes how Giuseppe Sorge (“we”, “us”, or “the Developer”) handles personal information in connection with the mobile application Stackle (the “App”), available on Google Play.

We have written this policy to be as clear and direct as we could. If anything is unclear, please contact us at the email address listed at the end.

1. Who is the data controller

The data controller for personal data processed in connection with Stackle is:

Giuseppe Sorge, individual developer
Contact: gsorge.apps@gmail.com
Country of residence: Italy

If you have any question regarding this Privacy Policy or wish to exercise any of your rights under applicable data protection laws (including the EU General Data Protection Regulation, GDPR), you can contact us at the email above.

2. What data we collect

Stackle uses third-party services that collect data on our behalf. We do not operate any server that stores your personal data directly. The data collected is the following.

2.1 Firebase Analytics (Google)

Firebase Analytics collects data about how users interact with the App. This includes:

Pseudonymous installation identifier (Firebase Install ID)
App events: game starts and ends, drops, milestones, ad interactions, in-app purchases
Approximate location (country level), inferred from IP address (the IP address itself is not stored)
Device model, Android operating system version, app version
Language preference and device locale
Session duration and first-open timestamp

This data is associated with the pseudonymous identifier and is not directly linked to your real identity unless you separately provide it (we do not ask).

2.2 Google AdMob

The App displays advertisements served by Google AdMob. AdMob collects:

Advertising ID (Android Advertising ID, or AAID)
IP address (used for ad serving and frequency capping)
Approximate location, derived from IP address
Interaction with advertisements (impressions, clicks, video reward completion)

When you grant consent through the in-app GDPR consent form, AdMob may serve personalized ads based on your interests. When consent is denied, AdMob serves non-personalized ads instead, which use only contextual data (no personal profile).

You can reset or disable your Advertising ID at any time through your Android device settings (Settings → Privacy → Ads).

2.3 Google Play Billing

In-app purchases (e.g. Stackle Pro) are processed by Google Play. We do not access or store payment information. Google Play handles all transaction data, including credit card details, billing address, and purchase history. The only purchase information visible to the App is whether you have acquired Stackle Pro.

2.4 Local data on your device

Stackle stores the following data locally on your device only, in Android SharedPreferences. This data is not transmitted to our servers (we have no servers) or to any third party:

Your highest score
Audio settings (sound on/off)
Stackle Pro entitlement state (whether you have purchased Pro)
Internal counters used for showing ads at appropriate intervals
One-time event flags (used to fire each “first time” analytics event exactly once)

This local data is removed when you uninstall the App or clear app data through Android settings.

3. Why we collect this data

Purpose	Data used	Legal basis (GDPR Art. 6)
Understand how users play the game and improve it	Firebase Analytics events	Consent (in-app GDPR form)
Show personalized advertisements	AdMob personalized ads data	Consent (in-app GDPR form)
Show non-personalized advertisements	AdMob non-personalized data (IP, contextual)	Legitimate interest in monetization
Process in-app purchases	Google Play Billing	Performance of a contract (Stackle Pro purchase)
Detect and fix crashes (if Crashlytics is enabled in future versions)	Anonymous crash reports	Legitimate interest in maintaining the App

We share data with the following third-party services, which act as data processors on our behalf:

Google (Firebase, AdMob, Play Billing) — see Google’s Privacy Policy for details on how Google processes data.

We do not sell or rent your personal data to anyone. We do not share your data with anyone else.

Data transfer outside the European Union

Some of our third-party services (notably Google) process data on servers located outside the European Union, including in the United States. Such data transfers are protected by Standard Contractual Clauses (SCC) approved by the European Commission, ensuring an adequate level of protection.

5. Your rights

If you are in the European Union, the United Kingdom, or another jurisdiction with similar data protection laws, you have the following rights:

Right to access — you can request a copy of the personal data we hold about you.
Right to rectification — you can request correction of inaccurate or incomplete data.
Right to erasure (“right to be forgotten”) — you can request deletion of your data.
Right to restrict processing — you can request that we limit how we use your data.
Right to data portability — you can request a copy of your data in a portable format.
Right to object — you can object to our processing of your data, including for direct marketing or based on legitimate interest.
Right to withdraw consent — you can withdraw your consent at any time. To withdraw consent for analytics and personalized ads, you can:
- Reset your Advertising ID in Android settings
- Reinstall the App, which will re-trigger the GDPR consent form
- Contact us at the email below to request data deletion

To exercise any of these rights, contact us at gsorge.apps@gmail.com. We will respond within 30 days.

If you believe we have not addressed your request adequately, you have the right to lodge a complaint with your local data protection authority. In Italy, this is the Garante per la protezione dei dati personali (https://www.gpdp.it).

California residents (CCPA)

If you are a California resident, you have additional rights under the California Consumer Privacy Act (CCPA), including:

The right to know what personal information we collect about you
The right to request deletion of your personal information
The right to opt out of the “sale” of your personal information (we do not sell your data)
The right to non-discrimination for exercising your CCPA rights

To exercise CCPA rights, contact us at the email above.

6. Data retention

Firebase Analytics events: retained for 14 months (default Firebase retention period), after which data is anonymized and aggregated.
AdMob data: retained according to Google’s policies. See Google’s privacy policy for details.
Google Play Billing data: retained by Google according to their policies and as required by tax and accounting laws.
Local data on your device: retained until you uninstall the App or clear app data.

If you request deletion under your right to erasure, we will instruct our processors to delete your data within 30 days, where technically feasible.

7. Children

Stackle is not directed to children under the age of 13 (or 16 in some EU jurisdictions, including Italy). We do not knowingly collect personal information from children.

If you believe we have inadvertently collected data from a child, please contact us immediately at gsorge.apps@gmail.com and we will delete it.

8. Security

We rely on the security measures of our third-party processors (notably Google) to protect your data. No method of transmission or storage on the Internet is 100% secure, and we cannot guarantee absolute security.

Local data stored on your device is protected by Android’s app sandboxing, which prevents other apps from accessing it.

9. Changes to this policy

We may update this Privacy Policy from time to time, for example to reflect changes in the App, in our practices, or in applicable law. When we make material changes, we will:

Update the “Effective date” and “Last updated” at the top of this document
Notify users through the App or through other reasonable means

The latest version is always available at the URL where you are reading this document.

10. Contact us

For any question, concern, or request related to this Privacy Policy or your personal data:

Email: gsorge.apps@gmail.com Subject line suggestion: “Stackle Privacy”

We aim to respond within 30 days.

This Privacy Policy was last updated on May 4, 2026.