Ruby

Ruby is an AI call assistant for Mac that listens live and surfaces the right question or reminder at the right moment for high-stakes calls.

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Live call assistance for Mac

Ruby is an AI call assistant that runs on Mac and helps during live conversations. It listens to the call as it happens, then surfaces a question, reminder, or follow-up at the moment it may be most useful.

The workflow is simple: sign in with Claude, brief Ruby with the meeting context and a skill, then take the call. Ruby uses the user's Claude subscription for the AI layer and keeps the assistant private to the user during the call.

Core features

Live call listening

Ruby listens to the conversation in real time and watches for moments where a question or reminder may help.

Context briefing

Before the call, you can tell Ruby who you are meeting and assign a skill such as the-mom-test, sales, hiring, or a custom prompt.

Timely on-screen prompts

Ruby surfaces the question worth asking when the timing fits, instead of waiting until the call is over.

Private display

Only the user can see Ruby, and it is hidden from screen share so the assistant is not visible to other participants.

No meeting bot

Ruby does not join the call as a bot, which keeps the interaction on the user's side of the conversation.

Claude-based processing

Ruby uses the user's Claude subscription for the AI work, and the transcript plus notes stay with the user.

Common use cases

Founders on customer calls
Use Ruby to keep high-stakes customer conversations moving and ask the question that would otherwise come to mind only after the call.
Product managers in discovery interviews
Brief Ruby with the interview context so it can prompt for a useful follow-up while the discussion is still active.
Sales calls and objections
Keep Ruby on hand during sales conversations to help surface the next question or the point worth remembering in the moment.
Recruiting interviews
Use Ruby to stay present in interviews while still having a prompt available for a missing detail or follow-up question.
Custom live-call workflows
If your call style does not fit a preset use case, Ruby can be briefed with your own skill and used as a personal call assistant.

Pros and Cons

Pros

Runs privately for the user and stays hidden from screen share.
Does not require a visible bot participant in the meeting.
Uses the user's existing Claude subscription for AI processing.
Supports briefing with different skills or custom call contexts.
Keeps transcript and notes with the user.

Cons

Available for Mac only on macOS 14.4+.
Requires Claude Code, not the Claude desktop app.
Public pricing information was not available on the site because the pricing page returned a 404.

FAQ

How does Ruby work during a call?

You sign in with Claude, brief Ruby with the meeting context, and then take the call. Ruby listens in real time and surfaces a question or reminder when the moment seems right.

Does Ruby join meetings as a bot?

No. The site says there is no bot joining the call.

Is Ruby visible to other meeting participants?

Ruby is described as private by default and hidden from screen share, so only the user can see it.

What does Ruby use for AI processing?

Ruby uses the user's Claude subscription for the AI work, so the site describes it as not adding a separate AI bill.

What platform does Ruby support?

The download is for Mac, and the site notes macOS 14.4+ with support for Apple Silicon and Intel Macs.

Quick Facts

Category: AI call assistant
Platform: Mac
Minimum OS: macOS 14.4+
Primary users: Founders, PMs, AEs, recruiters
Workflow: Sign in with Claude, brief the call, then receive live prompts during the conversation
Domain: ruby.codeongrass.com