hcalls - Real-Time AI Interview Assistant
hcalls is a Real-Time AI Interview Assistant application. It captures live audio during video calls on Zoom, Google Meet, and Microsoft Teams, transcribes interviewer questions in real time, maps them to your uploaded resume, and streams structured answer guidance so you can respond with confidence.
hcalls uses Google Sign-In (OAuth 2.0) to provide secure, one-click authentication. We only access your name and email to create your account. No additional Google user data is accessed or stored.
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hcalls is Your Real-Time AI Interview Assistant
Hear the question, see structured guidance on your screen, and deliver confidently on every call. hcalls captures live audio on Zoom, Meet & Teams, maps questions to your resume, and streams tailored answers in real time.
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"Tell me about a time you disagreed with a PM on scope or timeline. How did you resolve it?"
Apple
LinkedIn
GitHub
Figma
Chrome · Edge · Brave
Run hcalls from your interview tab. Keep the guidance on your phone.
The hcalls extension captures live meeting audio from Google Meet, Zoom, and Microsoft Teams, pairs with your phone by QR code, and streams real-time transcripts and coaching without keeping the hcalls dashboard open.
AI interview copilot for your browser
Dual-track audio
Captures the meeting audio and your microphone separately for clearer transcripts.
Answers on your phone
Scan once to pair the companion, then keep coaching off your shared desktop.
Tab or screen capture
Use one meeting tab, or choose a screen, window, or tab when your setup needs it.
Open the extension, select a session, scan the QR code, and begin capture. Stop at any time from the extension or phone.
Your Brain Knows the Answer.
Your Mouth Betrays You.
The best AI interview assistant doesn't just prep you - it provides structured guidance in real time. No more blanking out. No more generic answers. No more invisible rubrics.
Your Mind Goes Blank at the Worst Moment
Speech speeds up. Fillers take over. You forget the project that would have been perfect. Under pressure, your brain closes exactly when you need it open.
ChatGPT Doesn't Know You
Generic AI gives you textbook answers that don't mention your projects, stack, or impact. Interviewers can smell generic. You need answers from your own resume.
You Know the Story. You Can't Structure It Live.
Behavioral answers need a spine. Without real-time structure guidance, you ramble, lose the point, or forget the result. STAR answers get callbacks. Rambling doesn't.
You Forget Your Own Wins Under Pressure
You scaled that system to 10M requests. You cut deploy time by 40%. But when they ask 'tell me about a performance optimization' - your mind goes to Google, not your actual achievement.
AI Screeners Score You on Rubrics You Can't See
HireVue, Karat, and Byteboard score you on criteria you never see - speech clarity, problem decomposition, technical depth. A great answer in the wrong structure fails anyway.
Set Up in 3 Minutes.
Run in 4 Different Ways.
Upload your resume, paste the JD, then pick your mode - Web, Phone, Browser Extension, or Desktop. Same AI engine underneath, whichever way you run it.
Upload Resume
Drop your resume or paste your LinkedIn - takes 30 seconds. hcalls reads your real projects, skills, and metrics to make every suggestion feel like it came from you.
- Indexes your tech stack, achievements, and impact metrics.
- Categorizes past roles for quick behavioral answer mapping.
- Stays 100% local - never synced to external servers.
Add Job Description
Paste the target role's JD. The AI instantly pulls required skills, keywords, and priorities - so your answers always hit exactly what the interviewer is scoring for.
- Extracts must-have technical skills and keywords.
- Identifies behavioral themes: leadership, scale, conflict.
- Cross-references JD against your resume to find perfect overlap.
Choose Your Mode
Pick how you want to see answers: on your main screen (Web), on your phone via QR scan (Secondary Device), through the Chrome extension, or as a Desktop overlay. Same AI engine, four ways to use it.
- Web Copilot: no install, browser tab, works for AI screeners.
- Secondary Device: QR scan → phone shows answers, tab camouflages as Google Docs.
- Browser Extension: captures the meeting tab while guidance streams to your phone.
- Desktop App: OS-level overlay, invisible to all screen recording software.
Get Real-Time AI Guidance Live
As each question is asked, AI-generated answers appear in under 2 seconds - wherever you chose to receive them. No typing, no searching. Resume context, STAR structure, and JD keywords arrive exactly when you need them.
- AI answers generated within 1.5s of question detection.
- Surfaces the right resume project at the right moment automatically.
- Works across Web, phone, extension, and desktop - your choice.
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Interviews in 2026 Come in Two Flavors.
We Handle Both.
AI screening bots don't ask follow-ups. Human interviewers don't follow scripts. Your tool needs to handle both realities.
The Bot Has Already Decided Your Score Before You Finish Speaking
Companies like Google, Amazon, HireVue, Karat, and Byteboard use AI bots to screen 80%+ of candidates before any human gets involved. These bots score you on rubrics you cannot see - speech clarity, problem decomposition, technical depth. A great answer in the wrong structure fails.
- Captures AI bot audio questions in real-time
- Generates rubric-aware bullet points in 2 seconds
- Formats responses for scoring algorithm patterns
- Works with pre-recorded and live bot question formats
Your Interviewer Is Watching Your Eyes. Not Your Screen.
The classic format - a human on camera, sometimes with screen share, sometimes with live coding. You need to sound natural, structured, and confident. Nervousness is visible. Silence costs you.
- Listens silently alongside your call - no mic interference
- Matches questions to your resume automatically
- Streams STAR-structured talking points to your screen or phone
- Zero visible footprint when screen sharing is active
One AI Engine. Four Ways to Run It.
Built for Every Interview Setup.
Pick the mode that matches your interview setup. You can switch modes between sessions - the AI stays the same underneath.
Works the Moment You Open Your Browser
Best for: AI Screening Rounds · No Screen Share
No download, no extension, no setup. Open hcalls in a browser tab, share your interview tab audio, and answers stream in real-time. The fastest way to get started.
- 1Open hcalls in a separate browser tab
- 2Share your AI interview tab audio (one browser permission)
- 3Answers stream into hcalls in real-time as questions are asked
- AI video screeners (HireVue, Karat, Byteboard)
- Phone screens and no-video rounds
- Practice sessions before the real interview
- Any interview where your screen is NOT being shared
Why Candidates Are Switching
from Other AI to hcalls
Why a dedicated AI interview helper that works during live interviews outperforms ChatGPT, other AI, and generic prep tools - every time.
| Comparison Point | Other AI | hcalls |
|---|---|---|
| General interview tips & adviceBoth provide general guidance - but only one is personalized to you. | ||
| Mock interview practice modeOther AI has a dedicated mock interview mode. hcalls focuses on live sessions. | ||
| Resume builder built-inOther AI includes resume building. hcalls uses your existing resume as context. | ||
| Uses your actual resume for contextMaps answers to your real projects, metrics, and achievements. | ||
| Understands the target job descriptionExtracts required skills and keywords to align your responses. | ||
| Assists smoothly during live interview flowNo complex prompting - answers appear automatically as questions are asked. | ||
| Works free with no credit card requiredFree tier includes 50 credits - try the full product, no card needed. | ||
| Completely undetectable on Zoom, Teams, MeetWin32 Display Affinity makes the overlay invisible to all screen-sharing software. | ||
| Works on phone via QR pairing (answers on secondary device)Scan a QR code with your phone. Answers stream to your phone. Main tab camouflages as Google Docs. | ||
| Chrome extension with QR phone companionCapture the meeting tab and microphone separately while transcripts and coaching stream to your phone. | ||
| One-time credit purchase (no monthly lock-in)Other AI requires a monthly or annual subscription. hcalls uses one-time credits you buy only when you need them. | ||
| Structures answers in STAR/CAR formatAutomatically maps questions to behavioral frameworks with your experience. |
Maximize your interview preparation.
High-quality practice tools at a fraction of the cost.
Compare the real cost of alternatives. Practice with real-time feedback and structured answers to build interview confidence efficiently.
Resume Data Stays Private
Never shared, logged, or used for model training. Stays 100% on your device.
Invisible to Zoom & Teams
Win32 Display Affinity API ensures the overlay is never captured in screen recordings.
No Virtual Audio Drivers
Uses WASAPI system loopback - nothing unusual appears in your device list.
User-Controlled Sessions
Copilot only listens when you explicitly start a session. Zero passive monitoring.
From "I Froze Up"
to "I Got the Offer"
Real results from candidates who used hcalls to walk into their interview with the right answer, every time.
“I failed four consecutive Staff loops because I'd freeze during the high-scale system design panels. The volume of concurrent questions always got to me. I used hcalls for my next round-the Copilot captured the prompts and cleanly mapped out a Redis sharding architecture on my screen. I stayed structured, kept my cool, and landed the offer.”
“I went through three failed loops where I couldn't explain my code complexity under pressure. I started doubting my skills. I set up hcalls the night before my Stripe interview. When the interviewer threw a recursive graph problem, the Copilot instantly laid out the space-time tradeoffs. I explained it perfectly and got the offer.”
“AI screener bots were my absolute nemesis-I failed five in a row because my natural speaking style didn't hit the scoring algorithm. I tried hcalls for a Web3 startup's screen. The Copilot structured the answers to the rubric format live. Passed the screen and got the recruiter call the next morning.”
“I failed three EM loops in a row because I struggled to structure behavioral scenarios under pressure. My stories felt disorganized. hcalls changed everything-the Copilot recognized the prompts and mapped my career achievements to the STAR framework live on screen. It was the first time I felt 100% in control.”
Share the Edge with Friends.
Both Earn Free Copilot Credits
Invite your network to hcalls. Our two-sided referral program rewards both of you the moment they register.
Your Friend Receives
When someone registers using your invitation link, they get 50 free credits instantly on sign-up to start practicing mock interviews.
You Earn Instantly
Every time a referred colleague signs up and activates their trial, you instantly receive +50 free credits loaded into your account.
Three Steps To Unlimited Fuel
Share Your Link
Get your unique invite link from your dashboard and share it with friends, peers, or colleagues.
Friend Signs Up
They sign up using your link to instantly get 50 free credits and start practicing.
Get Rewarded
You instantly receive +50 free credits in your account the moment they join.
Everything You Want to Ask
Before You Buy
Detection, privacy, speed, and platform questions - answered directly.
Your Next Interview Could Happen This Week.
Don't go in unprepared. Set up in 3 minutes, get a structured answer to every question in 2 seconds - no card needed.