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About Extentos
What is Extentos?
Extentos is a development studio for building smart-glasses experiences, starting with Meta Ray-Ban. It provides a vendor-agnostic SDK, a simulator, an MCP server for coding agents, and built-in analytics, so you can add glasses features to your existing iOS or Android app without needing physical hardware upfront.
Who is Extentos for?
It's ideal for mobile developers and AI engineers who want to experiment with smart-glasses apps, especially those building with Meta Ray-Ban or exploring the Ray-Ban Display beta. It's not for non-developers or those looking for a turnkey consumer app—it's a developer tool.
Key capabilities
The Extentos SDK works in Xcode and Android Studio, and its MCP server integrates with agents like Claude Code, Windsurf, and Codex. The simulator mimics real glasses to speed up iteration, and the assistant runtime lets you configure voice agents with your choice of model (including local ones).
Key features
- Vendor-agnostic SDK — Write once, deploy to Meta Ray-Ban today, with more vendors on the way.
- Simulator — Test in a glasses-like environment without owning hardware, cutting iteration time from 10 minutes to 1 second.
- MCP Server — Let coding agents like Codex or Cursor interact with Extentos's 38 tools directly.
- Assistant runtime — Build voice agents with configurable turn-taking, interruption, and echo cancellation.
- Analytics — Get error data, vendor mix, latency, and frame drops to improve app performance.
SaaSpartout Score
7.3
/10
Editorial score from our review methodology — not user ratings.
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Extentos Pricing
Extentos pricing: Free to start. Billing model: Free.
For comparison: the median starting price in Developer Tools is $19/month, measured across 301 tools we track. See the full SaaS Pricing Index →
Free tier
Extentos is free to start—use the SDK and simulator to build and test your smart-glasses app without upfront cost.
Paid plans for extended usage, team features, or analytics are expected, but exact pricing isn't public yet.
Frequently asked questions
Is Extentos free?
Yes, Extentos is free to start. The SDK and simulator are available at no cost, but some advanced features may require a paid plan in the future.
How much does Extentos cost?
Extentos currently has a free tier. Exact pricing for paid plans hasn't been announced yet; check the official site for updates.
What smart glasses does Extentos support?
Extentos works with Meta Ray-Ban smart glasses (currently live), with Ray-Ban Display in beta, and Android XR and Brilliant Labs in preview.
Who is Extentos best for?
It's best for iOS and Android developers who want to add smart-glasses features to their apps, especially those using AI coding agents or building voice assistants.
Does Extentos work with coding agents like Claude Code?
Yes, Extentos provides an MCP server that integrates with agents like Claude Code, Windsurf, Codex, and more, giving them access to its tools and simulator.
What are the main alternatives to Extentos?
Alternatives include developing directly with Meta's smart-glasses SDK, using other AR/VR development platforms, or building custom integrations. Extentos stands out for its vendor-agnostic approach and built-in simulator.
