Downloads

The SIMRelay product is web-first — the dashboard works in any modern browser and the API is just HTTPS. A few companion tools live here.

Mobile apps

Native iOS and Android apps for receiving SIMRelay messages on the go, with push notifications and biometric unlock. Beta — install links available from the dashboard's "Downloads" section once you're signed in. Public store releases coming soon.

BYOS (Bring Your Own SIM) device firmware

If you'd rather operate your own SIM cards on hardware you control, our BYOS firmware turns supported Android devices into self-hosted SMS relays that talk to the SIMRelay control plane. BYOS is in private preview for select customers — contact us if you have a fit.

MCP server for AI agents

The Model Context Protocol server that exposes SIMRelay as native tools to Claude Desktop, Claude Code, Cursor, and other MCP hosts. Source on GitHub; install via npm: npm install -g simrelay-mcp-server. Setup details on the MCP server page.

Example clients

Reference HTTP client implementations in Python, TypeScript, and Go — including auth, polling, and webhook signature verification. Public repository link coming with the developer docs launch.

Logo and brand assets

For partner pages and press: request the brand kit. We're happy to share logo, color, and typography guidelines.