Latry

Mobile SvxLink Client for Android & iOS

Latry brings hassle-free digital voice communication to your favorite SvxReflector and HAM TETRA talkgroups. Developed by Silviu YO6SAY as a passion project, it delivers crystal-clear audio using the efficient Opus codec with background support on both Android and iOS devices.

Key Features

Versatile Connectivity

Connect seamlessly to SvxReflector servers or join conversations on HAM TETRA networks.

High‑Quality Opus Audio

Enjoy low-latency voice with an integrated jitter buffer and resampling.

Simple Tap‑to‑Talk Interface

Tap to start talking and tap again to stop—perfect for on-the-go operation.

Talkgroup Support

Easily choose your talkgroup and see who’s transmitting in real time.

Secure Authentication

Pair your callsign with an authentication key to keep conversations private.

Cross-Platform Mobile

Available for both Android and iOS devices, with background support.

Open Source & Free

Built with Qt 6.9 and released under GPLv3 license as a hobby project. Community contributions welcome - view source, contribute, or build your own version on GitHub.

Tutorial: Connecting to SvxReflector (RO)

HAM Tetra test in Spain

Tutorials & Mentions

Frequently Asked Questions

What is the main purpose of Latry?

Latry is intentionally designed to be a tiny and focused SvxLink client available on both Android and iOS. Its primary goal is to do one thing well: connect you to SvxReflector and HAM TETRA talkgroups with a simple, reliable interface. It is not intended to be a full replacement for a complete SvxLink node.

Is Latry really free? Does it contain ads?

Yes, Latry is completely free and contains no advertisements whatsoever. If you see ads while using the app, they are likely coming from adware installed on your device, not from Latry itself. The app will always remain ad-free.

Will you add a dashboard or other advanced features?

No. To keep the app simple and lightweight, I do not plan to add complex features like a dashboard, talkgroup scanning, or server management. SvxLink itself does not have a built-in dashboard, so such a feature is outside the scope of this client. Need more fancy features? Consider using WhatsApp instead.

What are the minimum system requirements?

Latry requires Android 9.0 (Pie) or newer and iOS 13.0 or newer. To ensure the best performance, security, and stability, I do not plan to support older, outdated operating systems. Keep note that the current Android version is 16 so please don't ask for support on Android 8 or earlier.

Can the app run in the background?

Yes, background support is available on both platforms. This allows the app to continue running and maintain connections even when not in the foreground, ensuring you never miss important communications.

Is the iOS version fully featured?

Yes! The iOS version includes all the same features as the Android version, including SvxReflector connectivity, HAM TETRA support, high-quality Opus audio, and background operation. Both versions are maintained with feature parity.

Is the app open source?

Yes! Latry is now open source and available on GitHub under the GPLv3 license. As a hobby project with limited development time, community contributions are especially welcome. You can view the source code, contribute to the project, or build your own version at github.com/s1lviu/Latry.

Got a bug report or a feature request?

Latry is an open-source project that was originally built by a single developer. Its future now relies entirely on community support. The official GitHub repository is the central place for all contributions and discussions.

Since the original developer is no longer an active user of the app and cannot lead active development, he now supports the project by reviewing and merging valid pull requests. Therefore, the most direct and effective way to fix a bug or add a feature is to submit a Pull Request. Your involvement is what keeps the project moving forward.

Don't have a strong technical background? You can still contribute. Modern AI coding assistants like ChatGPT Codex, Claude Code or Gemini CLI can help you write the necessary code for your proposed fix or feature, which can then be submitted for review. Don't forget to test your changes thoroughly before submitting a pull request.

Ready to get on the air?

Download the free app for Android or iOS and join the conversation today.

About The App

Latry - A Cross-Platform Mobile SvxLink Client

Latry is an application that lets amateur radio operators connect to digital voice networks from their Android and iOS devices. It functions as a client for SvxLink, allowing you to join talkgroups on SvxReflector systems or HAM TETRA networks and chat with other users over the internet.

After entering your server host, port, callsign, authentication key, and desired talkgroup, Latry establishes a secure connection and handles audio streaming using the Opus codec.

Latry supports displaying names for other users on the network when available. Settings are saved locally, so your server details are ready the next time you connect.

This project is provided for hobbyist use and is not affiliated with the official SvxLink project. Use it responsibly and comply with your local amateur radio regulations.