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Privacy Policy

Effective date: March 17, 2026

This Privacy Policy describes how Denis Sviridov ("Developer", "we", "us") collects, uses, and protects your personal data when you use the ColorWave mobile application ("App"). By using the App, you agree to the practices described in this policy.

1. Data Controller

Denis Sviridov (autónomo)
Calle Gandia 9, 2P, 12006 Castellón de la Plana, Spain
Email: welcome@colorwave.cc

2. Data We Collect

2.1. Account Data

Email address — required for registration and authentication
Password — stored in hashed form; we never have access to your plain-text password
Display name — optional, set by you
Nickname — required, unique username
Profile photo (avatar) — optional, uploaded by you

2.2. Content You Create

Book library — coloring books you add to your collection
Page progress — page status, time spent, notes, completion dates
Photos of coloring pages — images you upload (before, in-progress, after, palette)
Color markers — tool brands, color names, and color codes you log
Tags — categories and themes you assign to pages
Gallery posts — photos and captions you choose to share in the community gallery
Reactions and favorites — your interactions with gallery posts
Wishlist — books you add to your wishlist

2.3. Technical and Analytics Data

Device language — detected automatically to set the App language
App version — sent when you submit feedback
Push notification token — if you enable notifications
Network status — online/offline detection (used locally, not transmitted)
Usage analytics — screen views, feature usage events, and session data sent to Amplitude to help us improve the App
Crash reports — error details and diagnostic data sent to Sentry to help us fix bugs

2.4. User Communications

Feedback messages — text and optional screenshot attachments you submit through the App
Book requests — ISBN, title, and author of books you request to add
Post reports — reasons you provide when reporting inappropriate content

2.5. Data We Do NOT Collect

GPS or precise location data
Advertising identifiers (IDFA, GAID)
Contacts, calendar, or biometric data
Payment or financial data (payments are processed entirely by Apple/Google via RevenueCat)
Browsing history
Device fingerprinting data

3. How We Use Your Data

Purpose	Legal Basis (GDPR)
Create and manage your account	Contract performance
Store your coloring library and progress	Contract performance
Display your posts in the community gallery	Consent (you actively share content)
Send push notifications about wishlisted books	Consent (opt-in at onboarding)
Process feedback and book requests	Legitimate interest
Ensure safety and moderate content	Legitimate interest
Analyze app usage to improve features and fix bugs	Legitimate interest

4. Third-Party Services

We use the following third-party services to operate the App:

Service	Provider	Purpose	Data Shared
Supabase	Supabase Inc. (USA)	Backend, database, authentication, file storage	All account and content data
Expo Push Notifications	Expo / 650 Industries (USA)	Delivering push notifications	Push token, notification text
Google Books API	Google LLC (USA)	ISBN barcode lookup and book search	Search query or ISBN only (no user identifiers)
RevenueCat	RevenueCat Inc. (USA)	In-app subscription management	User ID, purchase history, subscription status
Amplitude	Amplitude Inc. (USA)	Product analytics	User ID, screen views, feature usage events
Sentry	Functional Software Inc. (USA)	Crash reporting and error tracking	User ID, error details, device diagnostics

These services may process data in the United States. Where applicable, data transfers are covered by Standard Contractual Clauses or equivalent safeguards.

5. Data Storage and Security

Your data is stored on Supabase cloud infrastructure.
Authentication tokens are stored in encrypted device storage (iOS Keychain / Android Keystore) via Expo SecureStore.
Passwords are hashed and never stored in plain text.
Photos are stored in Supabase Storage with access controls.
We use HTTPS for all data transmission.

6. Data Retention

Your data is retained as long as your account is active.
When you delete your account, your books, pages, photos, and associated data are permanently deleted.
Cached data on your device is cleared when you sign out.

7. Your Rights

Depending on your jurisdiction, you may have the following rights:

Access — request a copy of your personal data
Rectification — correct inaccurate data
Erasure — delete your account and all associated data
Data portability — receive your data in a structured format
Withdraw consent — revoke consent at any time (e.g., disable notifications in device settings)
Object — object to processing based on legitimate interest
Restrict processing — request limitation of processing

To exercise any of these rights, contact us at welcome@colorwave.cc.

You also have the right to lodge a complaint with your local data protection authority.

8. Camera and Photo Library

The App requests access to your device camera and photo library for the following purposes:

Camera — to scan ISBN barcodes and take photos of your coloring pages
Photo Library — to select existing photos of your coloring pages

These permissions are optional. You can deny or revoke them in your device settings at any time. The App does not automatically save photos to your device's photo library; however, you may choose to save a shareable image card to your gallery when sharing your work.

9. Push Notifications

If you enable push notifications, we collect a device push token to send you updates about wishlisted book releases. You can disable notifications at any time in your device settings or during the App onboarding.

10. Community Gallery

When you share a post to the community gallery, the following becomes visible to other authenticated users: your photo, caption, display name, nickname, and the book title. You can remove your gallery posts at any time.

11. Children's Privacy

The App is not directed at children under 16. We do not knowingly collect personal data from children under 16. If you believe a child has provided us with personal data, please contact us and we will delete it promptly.

12. Cookies and Tracking

The App does not use cookies, web beacons, or advertising trackers. We use Amplitude for product analytics and Sentry for crash reporting (see Section 4). We do not engage in cross-app or cross-site tracking, and we do not use data for advertising purposes.

13. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of significant changes through the App or via email. The "Effective date" at the top indicates the latest revision.

14. Contact Us

If you have questions about this Privacy Policy or your data, contact us at:

Denis Sviridov (autónomo)
Calle Gandia 9, 2P, 12006 Castellón de la Plana, Spain
Email: welcome@colorwave.cc