Meet Jack. Your coworker who never misses a word.
Jack listens along to your interviews and meetings, answers questions as they come up, and turns every call into a clear summary — whatever language it happened in.
Free to try · macOS & Windows · Works with Zoom, Meet, Teams and more
Jack sits in wherever you talk
- Job interviews
- Stand-ups
- Client calls
- 1:1s
- Sales demos
- Lectures
- All-hands
- Podcasts
- Zoom
- Google Meet
- Microsoft Teams
- Slack huddles
- Webex
- Discord
- YouTube
- Any app with sound
How Jack works
You talk. Jack takes the notes.
Jack runs quietly on your computer. It hears the call, follows every speaker, and keeps you one step ahead.
Tell me about a time you had to scale a system under real pressure.
और उस समय आपकी टीम कितनी बड़ी थी?
And how big was your team at the time?
Answer 1 · drafted in 1.2 s
- Situation: Black Friday traffic tripled in 48 hours.
- Action: Added a Kafka queue and sharded Postgres by merchant.
- Result: p99 latency 820 ms → 190 ms, zero downtime.
- Team: Led 4 engineers; mention it for Arjun.
✦ Call summary
- • Asked how you scaled under pressure; strong result.
- • Arjun (in Hindi) asked about team size.
- • Next: system design round on Thursday.
Action items
Every language
Speaks your language. And theirs.
Your call can switch languages mid-sentence. Jack keeps up, and your notes always arrive in the language you read best.
Hello
English
Heard · Hindi
क्लाइंट चाहता है कि डेमो गुरुवार तक तैयार हो।
✦ Jack's note · English
The client wants the demo ready by Thursday.
Features
Small tools. Big calm.
Everything Jack does is built for the moment you’re in: mid-call, under pressure, with no time to switch tabs.
Start with the Black Friday outage: traffic tripled in 48 hours. You added a Kafka queue in front of payments and sharded Postgres by merchant, which took p99 from 820 ms to 190 ms with zero downtime.
Answers while the question is still warm
Jack drafts what to say as people talk, using the prompt you picked. Earlier answers stay one arrow key away.
// two_sum.py
def two_sum(nums, target):
seen = {}
for i, n in enumerate(nums):
if target - n in seen:
return [seen[target-n], i]
seen[n] = i
Ask about your screen
One click sends a snapshot of your screen to Jack: code, slides, a chart. It answers in context.
Floats above everything
A compact always-on-top window with its own opacity. Stays out of your way.
System design interviewer
Your instructions, your tone.
Sales call coach
Your instructions, your tone.
Lecture note-taker
Your instructions, your tone.
Prompts for every call
Save instructions for interviews, sales, lectures, and switch in a click.
Keyboard first
Browse answers with the arrow keys. Save with ⌘S. No mouse hunting.
Resume maker
A resume for every job. Tailored in seconds.
Keep one profile. Paste a job description. Jack rewrites your summary and highlights for that job and picks the skills that matter, without inventing a thing.
Job description
Staff Engineer · Razorpay
Scale our payments platform. Own latency and reliability across Kafka pipelines and PostgreSQL clusters. Go a plus.
Priya Menon
Senior Backend Engineer · Bengaluru
Summary
Payments engineer who scales Kafka and Postgres systems under real load.
Experience
Northwind Payments
Contoso
Education
Skills
Get started
Up and running in a minute.
No setup calls, no bots to invite, no calendar access.
01
Download Jack
Install it on macOS or Windows and sign in. Takes about a minute.
↓Jack.dmg
macOS · Windows
02
Pick a prompt
Tell Jack what kind of call it is, or write your own instructions once and reuse them.
Behavioural interviewSystem design interviewSales discovery call03
Start talking
Press Start and join your call. Jack listens, answers, and writes the summary.
🎙Listening
Privacy
You're in control.
Jack is a coworker, not a spy. You decide when it listens and what it sees.
Not listening
● Listening, until you press Stop
- ✓
Nothing joins your call
Jack listens through your computer's audio. No bot participant, no calendar access, nothing to invite.
- ✓
Listens only when you say
Start and Stop are yours, and the listening status is always visible in Jack's window.
- ✓
Screens only on click
Jack sees your screen only when you press the capture button, one snapshot at a time.
- ✓
Encrypted in transit
Audio, screenshots, and answers travel over encrypted connections.
Pricing
Start free. Upgrade when Jack earns it.
Free for your first calls. Pro when you're hooked.
FAQ
Good questions.
Anything else? Ask Jack. Or us.
No. Jack runs on your computer and listens through its audio, so nobody sees an extra participant and there's nothing to invite.
Anything that plays sound on your computer: Zoom, Google Meet, Microsoft Teams, Slack huddles, Webex, a YouTube lecture, or a phone call routed through your laptop.
Jack follows conversations in many languages, including when people switch mid-call, and writes your notes and summaries in the language you read best.
Only between Start and Stop. The status is always visible in the Jack window, and screenshots are sent only when you click the capture button.
Yes. Prompts are saved instructions, like “system design interviewer” or “sales discovery call”. Pick one before you start and Jack answers in that style.
Fill in a job profile once. For each job, paste the description and pick a template; Jack rewrites your summary and highlights for that role and picks the most relevant skills, without inventing facts. Download it as a PDF.
macOS 13 Ventura or later (screen questions need macOS 14), and Windows 10 or later on 64-bit machines.
Your next call deserves a coworker.
Download Jack, press Start, and let it take the notes. You'll wonder how you ever took calls alone.