At First Sight — Privacy Policy & Terms of Service

Effective Date: August 13, 2026 · Publisher: LunaWorks (Colby Cabrera)

Welcome to At First Sight, a sight-reading trainer application. This Privacy Policy describes how we handle information in connection with your use of the application across Android, iOS, iPadOS, and watchOS.

We are committed to protecting your privacy, providing an offline-first experience, and maintaining complete transparency regarding data handling.

1. Privacy Philosophy & No Account Requirement

At First Sight is built with an offline-first design:

No User Accounts: You are not required to create an account, log in, or register to use the application.
No Personal Identifiers: We do not collect, request, or store personal identifiers such as your name, physical address, phone number, contact list, or advertising identifiers (AD_ID) on any external server.

2. Local Application Data (On-Device Storage)

To provide settings persistence and progress tracking, At First Sight saves specific application data locally on your device. This data is stored using native platform key-value storage mechanisms:

Android: SharedPreferences (within daily_limit_prefs, practice_stats_prefs, theme_prefs, and analytics_prefs)
iOS / iPadOS: NSUserDefaults
JVM / Desktop: java.util.prefs.Preferences

The specific data stored locally includes:

2.1. Daily Generation Limit Data

Used to track and enforce daily sheet music generation limits for free-tier users.

Last Sheet Generation Date: Timestamp string of the last generated sheet.
Sheets Generated Today: Integer counter of sheets generated on the current day.

2.2. Practice Statistics

Used to record and display your sight-reading training progress and achievements.

Last Active Date: Date string representing your last active practice session.
Streak Count: Integer representing consecutive practice days.
Total Sheets: Cumulative count of practice sheets generated.
Sum of Difficulties: Integer used to compute average difficulty levels.
Recent Activities Log: Serialized JSON list of recent practice records (sheet parameters and completion status).

2.3. App & Analytics Preferences

Theme Mode: Chosen visual theme (System Default, Light Mode, or Dark Mode).
Analytics Collection Toggle: Boolean flag recording your preference for enabling or disabling telemetry.

External Data Transfer Disclaimer: None of the local settings, limits, or practice statistics listed above are transmitted to external servers. This data remains strictly sandboxed on your local device.

3. Permissions Requested & Purpose

At First Sight requests specific platform permissions to operate:

3.1. Internet Access (`android.permission.INTERNET`)

Required for external network communication:

Sheet Music Rendering: The app uses an embedded WebView to render sheet music. This WebView retrieves the open-source OpenSheetMusicDisplay JavaScript library from a public Content Delivery Network (CDN) (https://cdn.jsdelivr.net/npm/opensheetmusicdisplay) at runtime.
Subscription Verification: Communicates with RevenueCat's secure servers (api.revenuecat.com) to check subscription status and verify entitlements.
Usage Telemetry: Sends optional anonymized analytics events to Firebase Analytics (if enabled).

3.2. Network State & Wake Lock (`android.permission.ACCESS_NETWORK_STATE`, `android.permission.WAKE_LOCK`)

Network Check: Verifies network availability before attempting subscription or CDN requests to prevent unnecessary battery drain.
Background Dispatch: Ensures system wake lock for brief background dispatching of batch telemetry events.

3.3. Vibration Controls (`android.permission.VIBRATE`)

Haptic Feedback: Interacts with the device's haptic engine (via pulsar-kmp) to provide subtle tactile responses when selecting difficulty levels, adjusting key signatures, or pressing UI controls.

4. Third-Party Services & Analytics

4.1. RevenueCat SDK (Subscriptions & In-App Purchases)

We integrate the RevenueCat SDK to manage in-app subscriptions for At First Sight Pro.

Data Transmitted: Anonymized purchase tokens and transaction receipts.
Payment Processing: All financial transactions, billing details, and credit card processing are handled securely by Google Play Store (Android) or Apple App Store (iOS). We never collect or store payment card details.

4.2. Firebase Analytics (Optional Telemetry)

On Android, we use Google Firebase Analytics to collect anonymized telemetry (e.g., screens viewed, practice sessions completed, feature usage).

No Advertising Tracking: Advertising ID collection (com.google.android.gms.permission.AD_ID) is explicitly disabled in our manifest and build configuration.
Opt-Out Control: Telemetry collection is optional. You can turn telemetry on or off at any time in App Settings.

5. Children's Privacy

Because At First Sight does not collect or transmit personal identifiers or personal information, the application does not knowingly collect data from children under the age of 13. It is safe for musicians of all ages.

6. Data Retention & Deletion

All application data (practice statistics, streak counts, and local settings) is stored exclusively on your device. We do not host or back up this data on external servers.

You can permanently delete all local application data at any time by uninstalling the application or clearing the application data/cache in your device settings.

7. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Any updates will be posted to this page. Continued use of the application after an update constitutes acceptance of the modified policy.

8. Contact Information

Publisher / Developer: LunaWorks (Colby Cabrera)

Support Email: colbycabrera.wd@gmail.com

Support & FAQ: https://colbycabrera.github.io/sight-reading-trainer-support/

Effective Date: June 28, 2026 · Publisher: LunaWorks (Colby Cabrera)

Please read these Terms of Service ("Terms") carefully before using the At First Sight mobile application.

This application is published by LunaWorks (Colby Cabrera) ("we", "us", or "our"). By accessing or using the application, you agree to be bound by these Terms. If you do not agree to these Terms, please do not download, install, or use the application.

1. Description of Service

At First Sight is a sight-reading trainer application designed to help musicians practice and improve sheet music reading skills. The application generates sheet music exercises according to user preferences and configuration.

2. Acceptable Use Guidelines

By using the application, you agree to the following guidelines:

Personal & Educational Use: The application is provided for your personal, non-commercial, and educational music practice.
Prohibited Conduct: You agree not to copy, reverse engineer, decompile, modify, or distribute the application source code or binary assets.
Fair System Use: You agree not to abuse, automate, or artificially query the sheet music generation capabilities to scrape or hoard generated files or to interfere with the normal usage of the application.

3. Subscriptions & In-App Purchases

At First Sight offers a premium upgrade option under the entitlement "At First Sight Pro" to unlock additional features (such as removing daily sheet generation limits).

3.1. Billing and Payments

All transactions, subscription charges, and payments are processed securely by the platform storefront where you downloaded the app (Google Play Store for Android or Apple App Store for iOS) via RevenueCat.
By purchasing a subscription, you agree to pay all applicable fees and taxes associated with your account.

3.2. Subscriptions & Renewal

Subscriptions are billed on a recurring basis.
Your subscription will automatically renew at the end of each billing cycle unless you turn off auto-renew or cancel the subscription at least 24 hours before the end of the current billing cycle.

3.3. Cancellation and Refunds

You can manage, change, or cancel your subscription at any time directly through your App Store or Google Play Store account settings.
Refunds are subject to the terms and refund policies of the respective store (Google Play Store or Apple App Store). We do not directly handle refunds or payment disputes.

4. Local Data & Service Disclaimers

4.1. Offline-First Storage

At First Sight stores your practice statistics, streak counts, and application settings locally on your device. We do not maintain external cloud-based backups of this progress data. If you uninstall the application, delete application storage, or clear your device cache, your progress data will be permanently deleted and cannot be recovered.

4.2. Network Dependency for Notation Rendering

Sheet music notation rendering within the application requires active internet connectivity to fetch the necessary OpenSheetMusicDisplay library from a Content Delivery Network (CDN). If you are using the app offline, sheet music generation and rendering may fail to load correctly.

5. Disclaimer of Warranties

The application is provided on an "as is" and "as available" basis, without warranties of any kind, either express or implied. To the fullest extent permissible pursuant to applicable law, LunaWorks (Colby Cabrera) disclaims all warranties, express or implied, including, but not limited to, implied warranties of merchantability, fitness for a particular purpose, and non-infringement. We do not warrant that the application will be uninterrupted, error-free, secure, or free from viruses or other harmful components.

6. Limitation of Liability

To the maximum extent permitted by applicable law, in no event shall LunaWorks (Colby Cabrera) be liable for any direct, indirect, incidental, special, exemplary, punitive, or consequential damages (including, but not limited to, loss of data, loss of profits, business interruption, or educational setbacks) arising out of or in any way connected with the use, performance, or inability to use the application, even if advised of the possibility of such damages.

7. Governing Law

These Terms shall be governed by and construed in accordance with the laws of the jurisdiction in which the developer operates, without regard to its conflict of law principles.

8. Changes to These Terms

We reserve the right, at our sole discretion, to modify or replace these Terms at any time. Your continued use of the application after any such changes constitutes your acceptance of the new Terms of Service.

9. Contact Information

Developer / Publisher: LunaWorks (Colby Cabrera)