Ace Every Interview
With AI Power
Your invisible AI companion for technical interviews. Real-time answers, undetectable assistance, and a proven track record of candidate success.
See Hidden Buddy in Action
A sleek desktop app that works invisibly alongside your interview, delivering real-time AI answers
Hidden BuddyInterviewer
"Can you explain how you would design a URL shortener service that handles millions of requests?"
Detected Question
System Design: URL Shortener
Key Components:
1. API Gateway - Rate limiting, auth
2. Hashing Service - Base62 encoding
3. Cache Layer - Redis for hot URLs
4. Database - NoSQL for write speed
Recommendation: Use a consistent hashing algorithm for horizontal scaling...
Voice Mode
Real-time speech recognition captures every question with high accuracy
Audio waveform visualization
Stealth Overlay
Invisible to screen sharing - only you can see the AI responses
AI: Use DFS with memoization...
Multi-Model
Switch between AI models on the fly based on question type
Powerful Features
Everything you need to succeed in your interviews
Real-Time Voice
Natural speech-to-text with instant AI responses
100% Undetectable
Complete stealth mode for all video platforms
Multiple AI Models
GPT-4, Claude, Gemini and more
Lightning Fast
Millisecond response times
System Design Expert
Deep technical knowledge
Works Everywhere
All major platforms supported
How It Works
Get started in 3 simple steps and ace your next interview
Download & Install
Download Hidden Buddy for Windows or macOS. The lightweight desktop app installs in under 2 minutes with automatic updates built in.
Sign In & Go
Log in with your account. All AI models are pre-configured and ready to use - no API keys or setup needed. Just pick your preferred response style and domain.
Start Your Interview
Launch Hidden Buddy before your interview. It listens in real-time, transcribes questions, and delivers precise answers through an invisible overlay.
Works With Every Interview Platform
Hidden Buddy runs as a separate desktop application, so it works seamlessly alongside any video conferencing or coding platform you use.
Loved by Professionals
See what our users have to say about their experience
"Hidden Buddy helped me land my dream job at a top tech company. The real-time voice assistance during system design rounds was a game-changer. I felt confident and prepared throughout."
Alex R.
Software Engineer at FAANG
"I was nervous about my first Big Tech interview, but Hidden Buddy gave me the edge I needed. The AI responses were incredibly accurate and fast. Got the offer within a week!"
Sarah M.
Full-Stack Developer
"The multi-model support is brilliant. I could switch between GPT-4 for coding questions and Claude for behavioral ones. The stealth mode works flawlessly across all platforms."
James K.
Senior Data Scientist
"Used Hidden Buddy for 5 interviews and received 4 offers. The system design expertise is outstanding - it helped me articulate complex architectures clearly and concisely."
Priya S.
DevOps Engineer
"The lightning-fast response time is unreal. Questions are answered before I even finish processing them. It completely transformed my interview performance."
Michael T.
Mobile Developer
"Best investment in my career. Went from struggling with coding interviews to acing them consistently. The voice transcription is incredibly accurate even with accents."
Lisa W.
Backend Engineer
Simple Pricing
Choose the perfect plan for your interview preparation
Ready to Ace Your Interviews?
Join 600+ professionals who are getting hired with Hidden Buddy
Frequently Asked Questions
Everything you need to know about Hidden Buddy
Hidden Buddy runs as a lightweight desktop application that listens to your interview audio in real-time. It transcribes questions using advanced speech recognition, sends them to your chosen AI model (GPT-4, Claude, or Gemini), and displays accurate answers through an invisible overlay on your screen. The entire process takes milliseconds.
Yes. Hidden Buddy runs as a separate desktop process and does not interact with your browser or video conferencing software directly. It uses system-level audio capture and a transparent overlay that is invisible to screen sharing. It has been tested and verified on Zoom, Google Meet, Microsoft Teams, and all major platforms.
Hidden Buddy supports 50+ AI models including OpenAI GPT-4 and GPT-4o, Anthropic Claude 3.5 Sonnet and Claude 3 Opus, Google Gemini Pro and Ultra, Meta LLaMA, Mistral, and many more. You can switch models mid-interview based on the type of question being asked.
Hidden Buddy works with every video conferencing and coding platform including Zoom, Google Meet, Microsoft Teams, Webex, CoderPad, HackerRank, LeetCode, HireVue, Karat, and any browser-based interview tool. Since it runs as a standalone desktop app, there are no compatibility issues.
No! Hidden Buddy handles all AI infrastructure for you. All AI models are fully managed and ready to use out of the box. Just sign up, download the app, and start your interview. No technical setup or configuration required.
Yes! Hidden Buddy offers a generous free plan with 5 AI requests per day. No credit card required - just sign up and start using it immediately. When you need more, upgrade to Pro or Premium for higher limits and advanced features.
Hidden Buddy excels at coding interviews (algorithms, data structures), system design rounds, behavioral/leadership questions, SQL and database queries, machine learning concepts, and general technical discussions. It adapts to the type of question being asked.
Our users report a 98% accuracy rate across coding, system design, and behavioral questions. The AI models are tuned for interview contexts and provide production-quality code, detailed system design explanations, and well-structured behavioral responses using the STAR method.