Privacy Policy

Last updated: December 5, 2025

Introduction

Chess Puzzles: Tactics Trainer (“we,” “our,” or “us”) is committed to protecting your privacy. This Privacy Policy explains what information the app collects, how it is used, and the choices you have.

Information We Collect

Automatically Collected Information

Analytics Data

App usage patterns and interactions
Puzzle-solving performance and timing
Feature usage statistics
Device information (operating system, app version)
Session duration and frequency of use

Game Progress Data

Chess puzzle attempts and solutions
ELO rating changes and history
Solving streaks and achievements
Time spent on puzzles
Hint usage and difficulty preferences
Theme selection and customization choices

Technical Data

Anonymous user identifiers
Error reports and crash data
Performance metrics

Information You Provide

Initial Setup

Chess skill level (beginner, intermediate, advanced)
Playing experience and rating estimates
Puzzle difficulty preferences

App Interactions

Push notification preferences
Theme and color selections
Filter settings (difficulty, themes, colors)

How We Use Your Information

The app uses collected data to:

Improve your experience — personalized puzzle recommendations
Track progress — maintain ratings, streaks, and achievements
Optimize performance — analyze usage and fix bugs
Send notifications — daily reminders and streak notifications (opt-in)
Prevent abuse — ensure fair play

Data Storage and Security

Local Storage

Local progress data, preferences, and settings remain on your device until the app is deleted.

Cloud Storage

We use Firebase for anonymous user authentication and synchronize data with secure servers using encrypted transmission.

Data Retention

Rating history retains only the last 90 days; server data persists for service continuity.

Subscriptions and Payments

Payments are processed through the Apple App Store. The app receives only transaction identifiers and subscription status, not full payment information.

RevenueCat

This third-party service manages purchases, receiving only non-sensitive metadata such as user identifiers and subscription status — not names, emails, or payment cards.

Managing Subscriptions

Modify or cancel subscriptions through your Apple ID settings; the app cannot cancel on your behalf.

Free Trials

Apple notifies us when a trial converts to a paid subscription or is cancelled.

Third-Party Services

Firebase (Google) — anonymous authentication and data synchronization. Privacy policy: firebase.google.com/support/privacy
Amplitude — analytics and performance monitoring. Privacy policy: amplitude.com/privacy
RevenueCat — subscription management.

Children’s Privacy

The app is suitable for all ages. We do not knowingly collect personal information from children under 13.

Changes to This Privacy Policy

Updates are posted in-app, reflected by a change to the date above, and accompanied by notifications for significant modifications.

Contact Us

Email: stovmasian.master@gmail.com Subject: Chess Puzzles: Tactics Trainer — Privacy Policy Inquiry

We aim to respond within 30 days.