Nexo

Private alpha · Mobile & wearable AI

One companion. Wherever your day takes you.

Nexo is a voice-first AI companion that keeps useful context, coordinates tools, and meets you through the devices you already carry or wear.

See how Nexo works

The companion layer, built to move with you.

PhoneOne companion

Why Nexo

Your assistant should not reset every time life moves.

Most assistants are built around isolated commands and disconnected interactions. Nexo is being developed as a continuous companion: available by voice, able to retain useful context with permission, and designed to coordinate meaningful work without constantly pulling you away from what you are doing.

Deeper conversation. Organized continuity. Permissioned memory. Useful tools.

Fragmented

Continuous

Product principles

  • 01

    Continuous by design

    Carry relevant, permissioned context across sessions instead of beginning from zero.

  • 02

    Hands-free when it matters

    Access Nexo through your phone or compatible headphones, without requiring a specific device or headphone style.

  • 03

    The companion, not the gadget

    Nexo is designed to move across phones, headphones, glasses, cars, and future interfaces.

How it works

A conversation that can keep working.

  1. 01

    Activate

    Start Nexo from the device that fits the moment.

  2. 02

    Ask or delegate

    Speak naturally, think aloud, or hand off a defined task.

  3. 03

    Stay in flow

    Continue the conversation while independent tools work, then receive a concise result when it is ready.

The flow

  • 01Voice
  • 02Nexo
  • 03Tool task
  • 04Useful result

Working private alpha

The foundation is already running.

The current prototype supports real-time speech, natural interruption, session continuity, bounded background tasks, and web research. A functioning Android testing application supports headphone double-tap activation. An intuitive dashboard to consult conversations, memories, etc. Cross-platform mobile development, including iOS, is planned.

NexoIllustrative product flow

Personal dashboard

Your conversations, memory, and tools — all in one place.

The working Nexo dashboard is your private command center. Every conversation is stored with its date, summary, and full transcript, alongside any jobs or tool calls that ran inside it. You can revisit past work, inspect outputs, and manage the memory Nexo builds about you.

  • Browse every conversation with summaries, dates, and full transcripts
  • Review attached jobs and tool calls, including their complete outputs
  • See all saved personal memory and facts, with the source conversation for each
  • Delete, edit, or add anything — you control what Nexo knows
Dashboard conversation history with summaries, dates, and transcripts

Product vision

Same companion. Different surface.

Nexo carries portable context, conversation, and tools between surfaces. The companion is the product; the device is only the way in.

Android testing app functioning today; iOS development planned.

PhoneIn development and testing

Principles and control

Personal should also mean controlled.

Nexo is being designed around explicit permissions, bounded tool access, transparent memory controls, and secure short-lived client credentials.

  • Permission first

    Access is requested explicitly and can be withdrawn.

  • Memory controls

    What Nexo remembers is designed to be visible and editable.

  • Bounded tools

    Tool actions run inside defined, reviewable limits.

  • Clear status

    You can always tell when Nexo is listening or working.

Detailed privacy and security documentation will be published as the beta implementation is completed.

Roadmap

From working prototype to portable companion.

These are development targets, not completed commitments. Timelines may change.

  1. Now

    Working mobile voice and orchestration application.

  2. Q4 2026

    Cross-platform mobile development, including iOS.

  3. Q1 2027

    Deeper personalization, organized conversations, and cross-platform testing.

  4. Q2 2027

    Pricing validation and AI-glasses integration feasibility.

  5. H2 2027

    Wearable integration prototype and partner exploration.

Founder

Built with a simple conviction: the best assistant should fit into your life.

Iker Castillo, founder of Nexo

Iker Castillo

Founder and developer

Working across AI systems, Python, mobile experiences, and tool-driven research workflows.

Help shape an assistant that actually fits into your day.

Join private beta waitlist and tell us where a hands-free companion would be most useful to you.