Last Updated: 4/21/2026

STACKLAB LLC ("we", "our", or "us") respects your privacy and is committed to protecting your information.

Information We Collect

We may collect the following types of information:

• **Account Information:**When you sign in using Google or Apple, we collect basic account identifiers such as your user ID and email address.
• **App Usage Data:**We collect information about your interactions with the app, including drill progress, performance data, and feature usage.
• **Device and Technical Information:**This may include device type, operating system version, and app performance data such as crash reports.

How We Use Information

We use collected information to:

• Provide and operate the app
• Save and sync your training progress
• Improve app performance and user experience
• Manage access to features and subscriptions

Third-Party Services

We use trusted third-party services that may collect and process data:

• **Firebase (Google LLC):**Used for authentication and secure data storage of user progress.
• **Google AdMob:**Used to display advertisements. AdMob may use device information and identifiers to provide personalized or non-personalized ads.
• **Apple App Store / Google Play:**Used to process in-app purchases and subscriptions.

These third-party services operate under their own privacy policies.

Data Sharing