StackLab Privacy Policy

1. Introduction

STACKLAB LLC ("StackLab," "we," "our," or "us") respects your privacy and is committed to protecting your personal information. This Privacy Policy explains what information we collect, how we use it, and the choices available to you when using StackLab.

2. Information We Collect

Account Information

When you sign in using Apple or Google, we may collect basic account information such as:

Email address
User identifier
Authentication provider

Guest mode users may use portions of the app without creating an account.

App Usage Data

We collect information related to your use of StackLab, including:

Study progress
Mastery and performance data
Feature usage
Subscription status
App settings and preferences

Device and Technical Information

We may collect technical information including:

Device model
Operating system version
App version
Crash reports
Diagnostic information
Performance information

3. How We Use Your Information

We use collected information to:

Operate and provide StackLab
Authenticate users
Save and synchronize study progress
Restore purchases where applicable
Improve app reliability and performance
Maintain account functionality
Manage subscriptions and premium features
Respond to support requests

4. Third-Party Services

StackLab uses trusted third-party providers that may process information on our behalf.

These include:

Firebase (Google LLC)

Used for:

Authentication
Cloud Firestore
Secure storage of user progress

Google AdMob

Used to display advertisements.

AdMob may collect device information and advertising identifiers to deliver personalized or non-personalized advertising in accordance with Google's policies.

Apple App Store and Google Play

Used for:

Subscription purchases
Payment processing
Purchase validation

Each provider maintains its own privacy policy.

5. Data Sharing

STACKLAB LLC does not sell personal information.

Information may be shared only as necessary to:

Operate app functionality
Synchronize user progress
Process subscriptions
Deliver advertisements
Comply with legal obligations

6. Data Storage and Retention

User information is securely stored using trusted cloud services, including Firebase.

Account-related information is retained while an account remains active.

If a user deletes their account, associated personal data will be permanently deleted or anonymized within a reasonable period, except where limited retention is required for legal, security, fraud prevention, or operational purposes.

7. Your Choices and Rights

Users may:

Delete their account from within the app
Contact us with questions regarding their information
Manage subscriptions through Apple App Store or Google Play
Choose whether to sign in or use guest mode where available

8. Children's Privacy

StackLab is intended for users who are at least 13 years old.

We do not knowingly collect personal information from children under 13.

If we learn that information from a child under 13 has been collected unintentionally, we will take reasonable steps to delete it.

9. Security

We use commercially reasonable administrative, technical, and organizational safeguards to help protect user information.

However, no method of electronic storage or internet transmission can be guaranteed to be completely secure.

10. Changes to This Privacy Policy

We may update this Privacy Policy from time to time.

Changes become effective when posted on this page.

The "Last Updated" date will always indicate the latest revision.

11. Contact Us

STACKLAB LLC
Cleveland, Tennessee 37312
support@stacklabapp.com

12. Delete Your Account

Users can permanently delete their account from within the StackLab app.

Deleting an account removes associated account data, subject to limited legal or operational retention requirements.

For additional instructions, visit the Account Deletion page.