The expert in your ear, in every conversation.
Underhear listens to the conversations that matter and whispers what’s next — framed by the framework you upload. Sales calls, client meetings, interview prep, due diligence. Same engine, swappable expertise. Between sessions it builds a compounding mental model so nothing is forgotten, ever.
One engine. Every conversation that matters.
Pick the framework. Underhear plays the role of the expert who’d be in the room if you could afford one.
Consulting
Client meetings, AI maturity assessments, due diligence. Underhear sits in the room, listens for what your framework says to probe, and surfaces the dimension the partner would have caught.
Sales
Discovery calls, demos, customer success reviews. Underhear listens for buying signals, objections, and the next move your playbook says to make.
Customer support
Live agent assist, escalation triage, complex ticket coaching. Underhear matches the situation to your playbook and whispers the next step before the customer asks.
Interview prep
Practice partner for system design, case interviews, FP&A rounds. Run your own mocks, get the next probe whispered. Built for practice, not for live cheating.
Tech due diligence
Code reviews, infra audits, M&A diligence calls. Underhear catches the gaps between what's claimed and what the evidence supports.
Or bring your own playbook.
Upload your firm’s own framework — your training docs, your interview rubric, your sales methodology. Underhear runs on whatever expertise you bring. The more specific your framework, the sharper the whispers.
Your framework. Our listener. Whispers in your ear.
No bots in your call. No “AI is recording” awkwardness. Just your phone, in your pocket, running on the playbook you choose.
Upload your framework
Pick a pre-built framework — AI maturity, system design, FP&A discovery, tech due diligence — or upload your firm's own playbook. The framework becomes the AI's instruction set.
Underhear listens silently
Open Underhear before your conversation. One tap. Audio stays encrypted on your device and in your private workspace — no bots in the call, no awkwardness.
Whispers framed by your framework
Brief whisper cards arrive on your phone — a missed dimension, a pattern from a past session, the next question your framework says to ask. Between sessions, the model compounds.
A taste of what your framework can do.
Each framework reshapes Underhear into a different expert. Here are four we ship with — to give you a feel for what whispers framed by a framework actually sound like.
AI Maturity Assessment
Maps an organization's AI capability across infrastructure, data, talent, and governance dimensions. Tells you what to probe next based on what you've heard.
Probes infrastructure, data quality, talent, governance, and 5 more dimensions.
Illustrative — actual framework content is private to your workspace.
System Design Interview Practice
Walks you through requirement gathering, capacity estimation, high-level design, and storage trade-offs. Whispers the next question to ask yourself when you're stuck.
Covers requirements, capacity estimation, high-level design, storage trade-offs, and scaling.
Illustrative — actual framework content is private to your workspace.
FP&A Discovery
Surfaces the financial drivers any operator should know about a business — revenue model, unit economics, cash conversion, capex intensity. Reminds you when you're missing a key one.
Covers revenue model, unit economics, cash conversion, capex intensity, and 4 more drivers.
Illustrative — actual framework content is private to your workspace.
Tech Due Diligence
Probes the engineering org along code quality, infrastructure maturity, team velocity, and security posture. Surfaces tensions between what's said and what's documented.
Covers code quality, infra maturity, team velocity, security posture, and tech debt signals.
Illustrative — actual framework content is private to your workspace.
The moat moved from the model to the framework.
LLMs finally fast and accurate enough.
Sub-second whisper latency on a real conversation was science fiction 18 months ago. Today it's a product. The window to build on top is open.
Margins on knowledge work are under pressure.
Clients want senior judgment without the senior bill rate. Augmenting expert judgment in real time is the only way to defend the price.
Frameworks are the new moat.
The AI is a commodity. The structured knowledge you bring — the playbook, the rubric, the interview script — is what your buyers actually pay for. Underhear puts it in the loop.
Radically transparent during pilot.
Every tier ships with every feature. We charge what it costs us during the pilot — no markup, no surprise bills.
Then $5/hour at our cost — no markup.
Limited cohort. We work with you 1:1 to get value out of it.
- Real-time AI whispers during conversations
- Compounding mental model across sessions
- Pre-built framework library
- Upload your own framework / knowledgebase
- iOS + web apps
- End-to-end encrypted audio
Launching after pilot. Pilot graduates lock in early-access pricing.
For people running these conversations every week.
- Real-time AI whispers during conversations
- Compounding mental model across sessions
- Pre-built framework library
- Upload your own framework / knowledgebase
- iOS + web apps
- End-to-end encrypted audio
- Priority support
For partners and team leads running these conversations across multiple clients or hires.
- Real-time AI whispers during conversations
- Compounding mental model across sessions
- Pre-built framework library
- Upload your own framework / knowledgebase
- iOS + web apps
- End-to-end encrypted audio
- Team rollup across users
- Shared firm framework library
- SLA + dedicated success
The $5/hour at-cost rate covers what we pay for LLM tokens + real-time transcription on a typical hour of meeting audio. We’ll show you the running cost in-app so you always know what each session is costing. After we launch broadly, we’ll add markup — but pilot users keep at-cost pricing for life.
Be in the first 50 to use it during pilot.
Free for everyone right now. Pilot seats are limited so we can sit with each user, listen to feedback, and build the partner you actually want in the room.