Privacy Policy for Morse Code Trainer and Keyer

Effective date: June 29, 2026

mjwgeek built Morse Code Trainer and Keyer as a freemium application. This Privacy Policy explains how information is handled when you use the app.

Information Collection

Morse Code Trainer and Keyer does not require a user account and does not collect, sell, or share personal information.

Text entered into the app for Morse code practice or transmission is processed locally on the device and is not uploaded to mjwgeek's servers.

USB Device Access

The app may request access to connected USB devices in order to communicate with compatible amateur radio equipment.

USB access is used only for radio communication and audio-routing features. Information from connected USB devices is not uploaded or shared with mjwgeek.

Microphone Access

If microphone-based Morse code decoding is added or enabled, microphone audio is processed locally on the device for live decoding.

The app does not intentionally record, store, or upload microphone audio.

Google Play Billing

The app may offer optional paid features through Google Play Billing.

Payment processing is handled by Google Play. mjwgeek does not receive or store your credit card number, bank information, or other payment credentials.

Google Play may provide the app with purchase-status information so that paid features can be unlocked or restored.

Data Stored on the Device

The app may store local settings and preferences, including:

• Morse code speed
• Tone frequency
• Display preferences
• Premium feature entitlement status

This information remains on the device unless Android or Google Play backs up the app's local data.

Third-Party Services

The app may use Google Play services, including Google Play Billing, for purchase processing and entitlement restoration.

Google's handling of information is governed by Google's own privacy policies.

Children's Privacy

The app does not knowingly collect personal information from children.

Because the app does not require an account or collect personal information, no child-specific personal data is intentionally gathered.

Data Security

mjwgeek does not operate a server that receives personal data from this app.

Local data remains subject to the security protections provided by the Android device and operating system.

Changes to This Privacy Policy

This Privacy Policy may be updated if the app's features or data practices change. Any updated version will be posted at the same public privacy-policy URL with a revised effective date.

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