Your personal AI assistant, always on your wrist

Rivius is a discreet AI wristband that turns spoken thoughts into reminders, tasks, lists, and drafts — sent to the right tool the moment something comes to mind.

Join the waitlist

Introducing Rivius

Capture thoughts, ideas, and tasks the moment they occur.

Press & Speak

One press on the wristband and you talk naturally — while walking, driving, cooking, or mid-conversation.

heard “Call Max tomorrow”

action reminder · tomorrow 9:00

captured · sent to Reminders

Understands Intent

Rivius doesn't just transcribe. It detects whether you meant a reminder, task, idea, list item, event, or message draft.

Reminder

Call Max · tomorrow

List item

Milk · shopping list

Idea

saving · categorized

Understands Intent

Rivius doesn't just transcribe. It detects whether you meant a reminder, task, idea, list item, event, or message draft.

Reminder

Call Max · tomorrow

List item

Milk · shopping list

Works With Your Tools

Calendar, tasks, email, notes, and lists — Rivius routes every thought to the right app automatically.

Calendar

Tasks

Email · Notes · …

Rivius

Confirms With a Buzz

A short vibration confirms capture. Higher-risk actions like sending an email always wait for your approval.

Draft email to Lisa

Awaiting OK

Add milk to list

Added

Remind: call Daniel

Set

Private by Design

A physical on/off switch, clear status feedback, and processing only after you activate it. No always-on recording.

microphone · standby

switch: off

session auto-ended

buffer cleared

The problem

Your best thoughts arrive at the worst moments.

Too Much Friction

Even opening a phone is too much when you're walking, driving, carrying something, or in a conversation. So the thought gets postponed — and lost.

Voice Memos Go Nowhere

Assistants Only Take Commands

Apps Organize Too Late

Someone walking through the city, hands full — no chance to open a phone.

Why a wristband

Built as a wristband, because availability is everything.

Zero Friction

No pockets, no screens, no unlocking. Press, speak, done — usable with one hand, without looking at it.

Discreet & Wearable

Lightweight and socially acceptable in everyday situations — a wristband, not another device to take out.

Physical Privacy Switch

A real on/off switch plus light and vibration feedback. You always know when Rivius is listening.

Smart Standby

No continuous recording. Rivius processes audio only after a clear activation — button, wake word, or gesture.

Auto Session Detection

Rivius notices when you've finished speaking, ends the session, and alerts you if a recording runs unusually long.

All-Day Battery

No screen, no speaker — just a microphone, a button, and Bluetooth. Simple hardware that lasts all day.

How It Works

From spoken thought to completed action.

Close-up of a discreet wristband being activated with one press.

Press and speak

A thought occurs. One press on the wristband and you say it naturally — no phone, no screen, no app.

Sound wave visualizing Rivius parsing a spoken thought for intent.

Rivius understands

Your speech is transcribed and parsed for intent: the action, the person, the timing, and where it belongs.

A to-do list with actions Rivius created from spoken thoughts.

Action lands in your tools

Reminders, tasks, list items, events, and drafts appear in the right app — with a daily inbox to review.

Early voices

Built for people whose ideas won’t wait

  • I capture ideas on my morning run that used to be gone by the time I reached my desk. Rivius has them waiting as a tidy task list.

    Lena M.

    Startup founder

    1/4

  • Between client meetings I just press and talk. The follow-ups are sitting in my task manager before I'm back at the car.

    Jonas K.

    Sales consultant

    2/4

  • I stopped sending myself cryptic voice memos. Rivius files the idea, sets the reminder, and drafts the email for me.

    Sarah T.

    Creative director

    3/4

  • It feels like the assistant is simply there — no phone, no app, no friction. My shopping list finally has everything on it.

    David R.

    Executive & father of two

    4/4

  • I capture ideas on my morning run that used to be gone by the time I reached my desk. Rivius has them waiting as a tidy task list.

    Lena M.

    Startup founder

    1/4

  • Between client meetings I just press and talk. The follow-ups are sitting in my task manager before I'm back at the car.

    Jonas K.

    Sales consultant

    2/4

  • I stopped sending myself cryptic voice memos. Rivius files the idea, sets the reminder, and drafts the email for me.

    Sarah T.

    Creative director

    3/4

  • It feels like the assistant is simply there — no phone, no app, no friction. My shopping list finally has everything on it.

    David R.

    Executive & father of two

    4/4

  • I capture ideas on my morning run that used to be gone by the time I reached my desk. Rivius has them waiting as a tidy task list.

    Lena M.

    Startup founder

    1/4

  • Between client meetings I just press and talk. The follow-ups are sitting in my task manager before I'm back at the car.

    Jonas K.

    Sales consultant

    2/4

  • I stopped sending myself cryptic voice memos. Rivius files the idea, sets the reminder, and drafts the email for me.

    Sarah T.

    Creative director

    3/4

  • It feels like the assistant is simply there — no phone, no app, no friction. My shopping list finally has everything on it.

    David R.

    Executive & father of two

    4/4

FAQ

Your Questions, Answered clearly

What can Rivius capture?

Is Rivius always listening?

Which apps does Rivius work with?

Do I have to confirm every action?

How long does the battery last?

When can I get one?

What can Rivius capture?

Is Rivius always listening?

Which apps does Rivius work with?

Do I have to confirm every action?

How long does the battery last?

When can I get one?

Never lose a thought again

Speak it the moment it occurs — Rivius turns it into action in your tools. Join the waitlist for early access.

Join the waitlist

The problem

Your best thoughts arrive at the worst moments.

  • Too Much Friction

    Even opening a phone is too much when you're walking, driving, carrying something, or in a conversation. So the thought gets postponed — and lost.

    Someone walking through the city, hands full — no chance to open a phone.

  • Voice Memos Go Nowhere

    Recorders capture audio and note-takers produce transcripts — but you still have to review them, find the action points, and move them into your apps yourself.

    A voice recorder and paper notes — captures that never become actions.

  • Assistants Only Take Commands

    Voice assistants execute basic commands, but they don't structure free-flowing thoughts into organized reminders, tasks, ideas, and drafts.

    A smart speaker that only executes basic commands.

  • Apps Organize Too Late

    Productivity apps only help after you've unlocked a phone, chosen a tool, picked a category, and typed. By then the capture moment is gone.

    A phone full of apps that all need unlocking, choosing, and typing.