Do work,
with your voice.
Talk to Jo the way you’d talk to a person. Say “tell Sarah three o’clock works” and Jo sends the email.
“It’s like Siri, but it doesn’t suck.”
Andrew Chen — a16z
Summarize unread from investors
3 need replies — Chen, Segal…
Reply to Josh: shipping tonight
Sent to #eng-core
Close the WebSocket PR
JO-214 → Done
Move standup to 3:00
Rescheduled — 4 invited
Jo
to you · 0.8s
Close the WebSocket PR
You —“Jo, close the WebSocket PR.”
Jo —“Found JO-214 — WebSocket integration. Mark it Done?”
You —“Yes.”
Jo, talk to me — 01 / 04
The problem
You live in twelve tools.
None of them listen.
You open Gmail to check on Sarah’s email. You tab to Slack to answer Josh. You switch to Linear to mark a PR closed. Three apps. Forty-five seconds. You lost the thought you were mid-sentence on.
The problem isn’t the tools. It’s the interface. Keyboards and taps were built for sitting at a desk. Jo is built for the walk to the meeting, the cab, the corner — anywhere you’d rather just say the thing and move on.
“Think Superhuman’s speed obsession, but the interface is voice and the surface area is every connected service — not just email.”
Rahul Vohra — Superhuman
How it works
Three steps, start to finish.
Jo turns your stack into a conversation, so you can keep moving.
Tap once. Jo listens — hands-free, mid-stride.
It routes to the right tool and calls it. Nothing for you to set up.
You —“Close the WebSocket PR.”
Jo —“Done. JO-214 marked complete.”
You hear the result. You never stopped walking.
Calendar
Standup moved to 3:00 — 4 invited
02 / 04
Integrations
Your tools,
your way.
Jo doesn’t rebuild your integrations — it reuses your existing MCP server connections and attaches them directly to the voice session. Every tool you already have access to becomes a spoken command away.
03 / 04
Our philosophy
The slowest thing in your workflow isn’t your Wi-Fi. It’s the app-switching. The wrong tab open. The thought interrupted by a notification you had to tap through to dismiss. We built Jo around a single belief: the interface should disappear. Your tools should answer to you — not the other way around. Speed isn’t a feature. It’s the whole point. We want everyone at inbox zero. We want everyone’s screen time at zero. The assistant that works best is the one you never have to look at.
The film
#handsfreedom
Questions