Privacy Policy

Last updated: March 2, 2026

Overview

PacketChess is designed with your privacy in mind. The app does not collect, store, or transmit any personal data to us or any third party. There are no user accounts, no analytics, and no tracking of any kind.

Data Collection

PacketChess does not collect or transmit any personal information. We have no servers, no databases, and no way to access your data.

Network Communication

PacketChess communicates exclusively over amateur radio using the AX.25 packet protocol. All game data (moves, invitations, chat messages) is transmitted over RF through your radio equipment. No internet connection is used for gameplay.

As with all amateur radio communication, transmissions are unencrypted and may be received by any station on the same frequency. This is consistent with amateur radio regulations, which prohibit encrypted communications.

Local Data

The following data is stored locally on your device only:

  • Your callsign — entered in Settings for use as your AX.25 source address
  • TNC and audio settings — your preferred connection mode and device configuration
  • Game history — chess games, moves, and chat messages stored in a local Core Data database

This data never leaves your device except as AX.25 packets transmitted over amateur radio.

Microphone Access

PacketChess requests microphone access when using the Software TNC mode. The microphone is used solely to receive and decode AX.25 packet audio from your radio. Audio is processed in real time and is not recorded or stored.

Bluetooth Access

PacketChess requests Bluetooth access to connect to Mobilinkd TNC hardware devices. Bluetooth is used exclusively for KISS TNC communication and is not used for any other purpose.

Local Network Access

PacketChess may connect to KISS TNC servers on your local network (e.g., Direwolf). This connection is used exclusively for packet radio communication.

In-App Purchases

PacketChess offers optional tip jar purchases through Apple's StoreKit framework. All payment processing is handled entirely by Apple. We do not receive or store any payment information.

Third-Party Services

PacketChess does not use any third-party analytics, advertising, or tracking services.

Contact

If you have any questions about this privacy policy, please contact us at contact@va7lsz.com.