Privacy Policy

Last Updated: January 28, 2026
Version: 2.0

01About This Policy

This Privacy Policy describes how Studyko ("we," "us," or "our") collects, uses, processes, and protects information about users ("you" or "users") of the Studyko mobile application (the "App" or "Service").

Studyko is a social study and productivity application that uses the Pomodoro Technique to help users focus, track study sessions, and connect with other learners in study rooms.

Contact Information

Email: studyko.app@gmail.com

App Name: Studyko

Platforms: iOS (App Store), Android (Google Play Store)

02Legal Framework & Compliance

Studyko is designed and operated in compliance with the following data protection laws:

  • GDPR - EU General Data Protection Regulation 2016/679
  • COPPA - Children's Online Privacy Protection Act (USA)
  • CCPA/CPRA - California Consumer Privacy Act
  • KVKK - Turkish Personal Data Protection Law (Law No. 6698)
  • Apple App Store Review Guidelines - Section 5.1 (Privacy)
  • Google Play Developer Program Policies - User Data Policy

03Information We Collect

3.1 Account Information

When you create an account using Google Sign-In or Apple Sign-In, we collect:

  • Email address: Account identification, communication
  • Display name: Public profile, social features
  • Profile photo URL: Avatar display (optional)

Note: We do NOT collect or store your password. Authentication is handled securely by Google or Apple through OAuth 2.0 protocol.

3.2 Study & Activity Data

  • Pomodoro sessions: Start time, duration, completion status
  • Study categories: Subject/topic of study
  • Streak data: Consecutive study days
  • Achievement progress: Unlocked achievements, progress

3.3 Social & Communication Data

  • Follow relationships: Users you follow and followers
  • Room memberships: Study rooms joined/created
  • Chat messages: Text messages in study rooms
  • Reactions: Emoji reactions to messages

3.4 Automatically Collected Information

  • Device type & model: Compatibility, debugging
  • OS version: Compatibility, crash analysis
  • App version: Update management
  • Timezone: Local time features, notifications
  • IP address: Security, fraud prevention (temporary)

04Information We Do NOT Collect

We want to be absolutely clear about data we do NOT collect:

Precise GPS location
Contact list / Address book
Photos / Camera access
Microphone / Audio
Calendar data
Health / Fitness data
Financial / Payment info
Biometric data
SMS / Call logs
Browsing history
Files / Documents
Clipboard data

05How We Use Your Information

5.1 Core Service Delivery

  • Create and maintain your account
  • Provide Pomodoro timer functionality
  • Track and display statistics
  • Enable study room features and social interactions
  • Unlock and track achievements
  • Sync data across devices

5.2 Safety & Security

  • Detect fraudulent activity
  • Enforce Terms of Service
  • Moderate chat content
  • Protect minors

06Age Requirements

We do not knowingly collect personal information from children under the age of 13 without verifiable parental consent.

General Use: 13 years and older

Account creation, timer usage, statistics, joining study rooms, sending reactions, and follow features.

Chat Messages: 18 years and older

For safety reasons, text-based chat in study rooms is restricted to users aged 18 and above. Users aged 13-17 can use quick messages and reactions.

Parental Rights (Ages 13-17)

Parents and guardians have the following rights:

  • Access your child's data
  • Request data deletion
  • Refuse further data collection
  • Request data correction

Contact us at: studyko.app@gmail.com

07Chat & Messaging Features

Message Types

  • Text messages: Only 18+ users can send
  • Quick messages: All users (13+) can send predefined messages
  • Emoji reactions: All users (13+) can react

Chat Moderation & Safety

  • Rate limiting: Max 30 messages/hour (regular) or 100/hour (premium)
  • Spam detection: Repetitive content is automatically filtered
  • Content flagging: Potentially harmful content flagged for review
  • Age enforcement: Automatic chat restriction for users under 18

Data Retention

Chat messages: Stored for 90 days, then permanently deleted.
Deleted messages: Immediately permanently deleted.
Moderation logs: Stored for 2 years.

08Third-Party Services

Firebase (Google)

We use Firebase for our backend infrastructure:

  • Firebase Authentication: Secure sign-in
  • Cloud Firestore: Database (AES-256 encrypted)
  • Cloud Messaging: Push notifications
  • Crashlytics: Error reporting (no PII)
  • Analytics: Usage analytics (anonymized)

Data center location: Europe (eur3 region - Belgium/Netherlands)

Authentication Providers

Google Sign-In

Email, display name, profile photo URL

We never receive your password

Apple Sign-In

Email (or relay), display name

"Hide My Email" supported

Google AdMob (Advertising)

Applicable to: Free (non-premium) users only. Premium subscribers do not see ads.

Opting Out of Personalized Ads

Android: Settings → Google → Ads → "Opt out of Ads Personalization"

iOS: Settings → Privacy & Security → Apple Advertising → Disable "Personalized Ads"

09Data Storage & Security

Encryption

  • Data in transit: TLS 1.3 encryption
  • Data at rest: AES-256 encryption
  • Backups: AES-256 encryption

Access Control

  • Authentication: OAuth 2.0 (no password stored)
  • Authorization: Firebase Security Rules
  • API access: Short-lived tokens

10Data Retention Periods

Active Account Data

Stored as long as your account is active

Chat Messages

Automatically deleted after 90 days

After Account Deletion

Most data deleted immediately. Backup systems: 30 days. Payment records: 5 years (legal requirement).

11Your Rights

Right of Access

Request information we hold about you

Right to Rectification

Correct inaccurate or incomplete information

Right to Erasure

Request deletion of your personal data

Right to Data Portability

Receive your data in a structured format

Right to Object

Object to data processing

Right to Withdraw Consent

Withdraw your consent at any time

To exercise your rights: Email us at studyko.app@gmail.com. We will respond within 30 days.

12Account Deletion

You can delete your account and personal data at any time.

Account Deletion Guide →

Contact Us

If you have questions or concerns about this Privacy Policy, please contact us:

studyko.app@gmail.com

© 2026 Studyko. All rights reserved.

This policy was last updated on January 28, 2026.