Privacy Policy

Last updated:

AltSea is built with privacy as a core principle. This policy explains what data we collect (spoiler: almost nothing), how we store it, and your rights.

Zero Cloud Dependency for Core Features: This app has zero cloud dependency for its core features. It stores data locally on your device and works entirely offline. Unlike cloud-based apps, we cannot discontinue your access to this app’s core features. Even if development stops, the app continues working. Your data is yours, stored on your device, permanently.

1. What We DON’T Collect

AltSea is designed to respect your privacy:

  • No browsing tracking: We don’t track what links you clean or where you browse
  • No advertising IDs: We don’t use advertising IDs for analytics
  • No sign-in required for core features: AltSea’s core link-cleaning features work without an account
  • No forced telemetry: Optional telemetry services stay off unless you explicitly enable them

2. Data Storage

Local-First by Default

AltSea is local-first for its core link-cleaning functionality.

The main link interception and URL cleanup features can run on-device without requiring an account.

Some features may still use network requests even if you are not signed in, such as:

  • App update checks
  • Optional link availability checks
  • Optional web preview fetching
  • Optional crash reporting
  • Optional usage analytics

The following data is stored locally:

  • Settings
  • Saved Links
  • Link History: Optional feature, stored locally if enabled
  • Usage Statistics
  • Ignored Domains: Your custom domain rules

Default behavior: You can use AltSea’s core local features without signing in. Optional features may use network requests when enabled.

Optional Account Features, Backup & Sync

Default: Optional

Some optional features in AltSea use cloud services when you choose to sign in or use account-based features. AltSea’s core link-cleaning features still work locally on your device without requiring an account.

If you sign in, AltSea may store and sync limited account-related data through our service providers. All data is transmitted over HTTPS.

You can continue using AltSea’s core local features without signing in.

3. Optional Telemetry (Opt-In Only)

Both telemetry services are disabled by default and require your explicit consent.

Crash Reporting (Sentry)

Default: Disabled

When enabled:

  • What’s sent: Error messages, stack traces, device info (OS version, app version)
  • NOT sent: Your links, browsing history, personal data, synced data
  • Purpose: Fix bugs and improve app stability
  • How to disable: Settings → Crash Reporting (toggle off)
  • Sentry Privacy Policy: https://sentry.io/privacy/

Usage Analytics (Amplitude)

Default: Disabled

When enabled:

  • What’s sent: Usage events (e.g., “Fast Mode used”, “Settings opened”)
  • NOT sent: Actual URLs, link content, personal information, synced data
  • Purpose: Understand feature usage to prioritize improvements
  • How to disable: Settings → Usage Analytics (toggle off)
  • Amplitude Privacy Policy: https://amplitude.com/privacy

4. Permissions Explained

INTERNET

  • Why: Check link availability, fetch web previews, and support optional account, backup, and sync features
  • How: Used only for optional network and account-related features

POST_NOTIFICATIONS (Android 13+)

  • Why: Required for Fast Mode to work
  • How: Brief notification displayed while processing link
  • Control: Required for Fast Mode; use Advanced Mode if you deny this permission

5. Third-Party Services and Optional Cloud Processing

Browsers

AltSea opens cleaned links in your chosen browser. We don’t control browser privacy policies—check your browser’s privacy settings for how they handle URLs.

Optional Services

  • Google Sign-In: Used when you choose to sign in. These services process your sign-in information and account-related data as part of authentication and account features.
  • RevenueCat: Used for premium purchase and entitlement-related flows. When account-based premium features are used, RevenueCat may receive an account-linked identifier needed to manage purchases and entitlements.
  • Sentry: Used only if you explicitly enable crash reporting.
  • Amplitude: Used only if you explicitly enable usage analytics.
  • Feedback submissions: If you send feedback through the app, we may receive the information you choose to submit, such as your message, name, email address, and any optional diagnostic attachment or app logs you include.

You should also review the privacy policies of any third-party services you choose to use through AltSea.

Optional Network Requests

Some features may use network requests even when you are not signed in:

  • Link availability checks: HTTP HEAD/GET request to verify a URL is reachable
  • Web previews: Fetches Open Graph metadata such as title, description, and image
  • App update checks: Contacts AltSea services to check for newer versions

If you sign in or use account-based features, additional network activity may occur for account management, backup, syncing, premium status, and support flows.

6. Data Retention

On-Device Data

  • Saved links: Retained until you manually delete them
  • Link history: Retained until you clear it or disable the feature
  • Settings: Retained until you uninstall the app
  • Statistics: Retained until you uninstall the app

Account and Cloud Data (if used)

  • Account information and backup/sync data: Retained while your account or related feature use remains active
  • Purchase and entitlement records: Retained as needed to manage premium access and related compliance obligations
  • Feedback submissions: Retained as needed to respond to your message, troubleshoot issues, and keep support records
  • Deleted account-related data: Removed within a reasonable period after account deletion or deletion request, unless a longer retention period is required for legal, security, or fraud-prevention reasons

Telemetry Data (if opted in)

7. Children’s Privacy

  • AltSea is suitable for users of all ages
  • Account creation and sync features require users to be 13 years or older
  • Core local features do not require us to identify you
  • If account-based features are used, we may process limited account information and age-related status records
  • Optional usage analytics are disabled by default
  • If you’re a parent/guardian and have concerns about your child’s use of the app, contact us at altseaapp@gmail.com

8. Changes to Privacy Policy

We will notify you of privacy policy changes via:

  • App update release notes
  • In-app notification

Continued use after notification constitutes acceptance.

Your control: You can always delete your data before accepting changes.

9. Contact & Questions

General Inquiries & Deletion requests

Last updated: March 31, 2026