The Invisible AI Copilot
for Technical Interviews
Powered by proprietary GhostLayer™ technology.
Invisible in screen shares like Zoom, Microsoft Teams, and Google Meet—so you can focus on the interview.
Windows 11 required. Windows 10 is no longer supported.
Generic tools get you caught.
GhostLayer™ gets you hired.
Interview Coder runs invisibly on top of any coding platform. It sees what you see, but the interviewer sees nothing.
1. Download & Login
Install the native macOS or Windows app. It sits quietly in your menu bar, ready to assist.
2. Activate Stealth Mode
Toggle GhostLayer™ with a global hotkey. The overlay appears for you, but is invisible to screen sharing.
3. Ace the Interview
Get real-time answers and code suggestions. Solve hard problems with confidence and zero anxiety.
Helping engineers get hired at
Enterprise Grade AI
Built for the Modern Engineer
Stop worrying about trick questions. Our suite of undetected tools gives you the confidence to land your dream role.
Real-time Audio Transcription
State of the art speech recognition technology. Supports 14+ languages including English, Hindi, Spanish, German, Japanese, and auto-detect mode. 99%+ accuracy.
AI-Powered Screen Reading
Advanced OCR extracts coding problems instantly from any screen. AI generates step-by-step solutions with real-time streaming. Auto-detects programming language.
Zero-Trace Stealth Mode
Invisible to screen sharing (Zoom, Microsoft Teams, Google Meet), task managers. Supports coding practice on platforms like HackerRank and LeetCode. No taskbar icons. Instant panic hide & show with Ctrl+B.
Multi-Shot Queue System
Capture scrolling problems in parts with Ctrl+Shift+H. Queue up to 10 screenshots. View numbered thumbnails in floating preview. Auto-stitches all captures before solving.
Smart Question Detection
AI automatically detects interviewer questions from audio and triggers instant responses. Use manual Ctrl+Enter on each question asked is recommended for better accuracy.
Context & Prompt Managers
Add your own context, resume information and prompt information that you wanted to give to the AI manually. Customize system prompts up to 1500 characters for personalized responses.
20+ Undetectability Features
Process hiding, window exclusion, and more. Designed by security researchers to be hidden in live interview
Zero-Downtime Reconnection
Advanced audio buffering keeps last 3 seconds of speech. Automatic reconnection with exponential backoff. Never miss context during network hiccups.
Is it safe?
Yes, OfferLetter runs entirely locally. It does not perform API injections or browser modifications. It works as an overlay layer, meaning no monitoring tool can ever detect it.
Designed to stay hidden.
Our proprietary GhostLayer™ rendering technology separates the AI overlay from the main frame buffer. If you record your screen, share your window, the Copilot remains invisible.
- Invisible to Zoom, Microsoft Teams, and Google Meet screen shares.
- Does not appear in Screenshot captures.
- Process hiding from Task Manager / Activity Monitor / Taskbar icons.
- Keyboard shortcuts for capture and help, so you stay focused during interviews and coding practice.
Pricing
Invest in Your Career
Simple, transparent pricing. Start free, upgrade when ready.
Free Trial
Perfect for testing. No credit card required.
Starter Pack
Credits never expire. Great for students.
Monthly Pro
Unlimited solutions. Cancel anytime.
Lifetime Pro
Pay once, own forever.
Secure payments by Razorpay. We never store your card info. Paid-plan refunds are not automatic: they require the 7-calendar-day window and AI credit usage limits in our Refund & Cancellation Policy (e.g. Starter ≤3 credits used after purchase; Monthly Pro first charge / Lifetime ≤10).
Support
Frequently Asked Questions
Still have questions? Email us at offerletter0221@gmail.com (provisional)
AI Coding Interview Assistant for Technical Preparation
Our AI coding interview assistant helps developers prepare for technical interviews by providing real-time guidance, coding solutions, and problem-solving support. Whether you are practicing DSA, solving LeetCode problems, or preparing for FAANG interviews, this tool helps you improve your performance.
Designed for software engineers, students, and job seekers, the platform supports multiple programming languages and offers intelligent suggestions to solve complex coding questions faster.
Improve your coding interview skills, reduce anxiety, and increase your chances of success with AI-powered assistance tailored for modern technical interviews.
Ready to ace your next interview?
Join 12,000+ engineers who landed roles at top-tier companies.
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