Every answer, before they finish the question.
Zustly listens to your interview, reads your screen, and quietly floats the perfect talking points over your call — undetectable to everyone but you.
Free to start · macOS 13+ · Windows 10+
Priya · Hiring manager
YouInterviewer · Hidden from share
"Tell me about a time you disagreed with a senior engineer."
Zustly is drafting…
Works quietly alongside
Watch one question get answered.
Pick a call type, then flip between your desktop and what the other side sees through screen share.
Priya · Hiring managerYouInterviewer · Hidden from share
"…"
Listening…
Your interviewer sees you. Never Zustly.
Built to stay out of the call, out of the screen share and out of your way.
Final round · 3 in call
No bots detected- Host
You
Candidate · Senior Frontend
- Interviewer
Priya Raman
Hiring manager · Acme
- Interviewer
Daniel Ortiz
Staff engineer · Acme
Zustly
Runs on your Mac
Never joins your interview. Zustly runs on your Mac, not in Zoom or Meet, so the interviewer's guest list only ever shows real people.
# CoderPad · longest substring, no repeats
def length_of_longest(s):
seen, left, best = {}, 0, 0
Zustly hint
Sliding window + last-seen map. Move left past repeats, O(n) time.
# CoderPad · longest substring, no repeats
def length_of_longest(s):
seen, left, best = {}, 0, 0
Hidden from screen share. Share your whole screen in a coding round and the interviewer sees only your editor. Drag the slider to compare.
"Why are you a good fit for this role?"
Zustly · from your resume
- • Rebuilt our React dashboard, LCP 4.1s → 1.3s
- • Led a design systems effort used by 6 teams
- • Tie-in: "your JD stresses performance — that's my core work"
Knows your story. Add your resume and the job post once, and every answer uses your real projects and the role's keywords. Tap a role to see it adapt.
Quietly brilliant, when it matters most.
Five things Zustly does in the background, so you can stay present in the conversation.
Zustly01 / 05
0.8s
Question ends
Zustly answers
Swipe for next feature
Pick a question. Watch it think.
"Describe a project that failed. What did you learn?"
Calm on the call. Offers after.
"I froze on a system design round last year. This time the talking points were just… there. Offer came two days later."
"The STAR prompts are scary good. It pulled a story from my own resume I'd completely forgotten about."
"Shared my screen for a live coding round and nobody saw a thing. It felt like having a calm friend on the call."
Cheaper than one bad interview.
Starter
Try Zustly on your next call.
$0 10 min/day
- 10 minutes every day
- Resume + JD context
- Screen & code reading
- STAR / technical modes
- Undetectable overlay
- Buy additional credits
Teams
Invite teammates and work together.
$12.99/hour
- Everything in Starter
- Invite teammates
- Shared team workspace
- Pay per hour of use
- Buy additional credits
Business
For teams and high-stakes rounds.
$14.99/hour
- Everything in Teams
- Most capable answer model
- Mock interview replays
- Priority support
- Buy additional credits