Native macOS app · No subscription required
Undetectable AI copilot
for technical interviews
Hidini is a native macOS copilot that puts real-time transcription and AI hints in a floating overlay, completely invisible to screen sharing.
Everything you need.
Nothing they can see.
One invisible overlay holds four tools: live transcription, AI hints, screen analysis, and full keyboard control. Because it is built for technical interviews, every answer arrives while the question is still being asked, powered by the AI provider you trust.
Ultra lightweight
100% native macOS App.
Tiny and lightweight.
The entire app is written in Swift with zero third-party frameworks, so the download stays under 4 MB and idle CPU usage sits at 0%. No Electron, no web views, no Rust overlay wrappers.
- < 4 MB
- download size
- 0%
- CPU when idle
- 0
- third-party deps
How we measured: All three numbers come from the current public release. Download size is the size of the notarized .dmg we publish on the releases page. Idle CPU is what Activity Monitor reports with the overlay open and no session running. The dependency count is zero because the Xcode project links no third-party packages at all.
AI credits included.
Or bring your own keys.
Every plan comes with AI credits so you can start right away. Prefer your own provider? Bring your own API keys and skip credits entirely. Or go fully local with any OpenAI-compatible app (e.g. LM Studio, Ollama, Jan). Zero cost, full privacy. See pricing for details.
- Claude Anthropic
- GPT OpenAI
- Gemini Google
- Local AI e.g. LM Studio, Ollama
Specifications
Hidini at a glance
| Platform | macOS 14 Sonoma or later, on Apple Silicon and Intel Macs |
|---|---|
| Download size | Under 4 MB |
| CPU when idle | 0% |
| Third-party dependencies | None. Written entirely in Swift, with no Electron shell and no web views |
| Free tier | 50 AI credits and 10-minute demo sessions, no card required |
| Pro | $79.99 one time. Includes 500 AI credits, unlimited session length, and bring-your-own-key support |
| Extra credits | $10 per 1,000 credits, purchased inside the app |
| Subscription | None. Every paid tier is a one-time purchase |
| Cloud AI providers | Claude (Anthropic), GPT (OpenAI), Gemini (Google) |
| Local AI providers | LM Studio, Ollama, Jan, and other OpenAI-compatible servers, at zero cost |
| Transcription engines | Apple Speech, OpenAI Realtime, Groq Whisper, Deepgram Nova-3 |
| Hidden from | Zoom, Google Meet, Microsoft Teams, Discord, OBS, and other screen capture tools |
They'll call it an unfair advantage. So was Google. So was Copilot. So was asking your senior dev for help. Every new tool is "cheating" until it becomes the standard.
What Hidini does not do
- Hidini hides the overlay from screen capture, not from the room you are in. Anyone looking at your physical display, or a second camera pointed at it, still sees everything you see.
- Hidini is macOS only. There is no Windows, Linux, iOS, or browser version, and there is no browser extension.
- Hidini does not answer for you. It puts a transcript, a hint, or a screen analysis in front of you, and you still decide what to say and what to write.
- Cloud providers need a working internet connection. If you want to stay offline, run a local model through LM Studio, Ollama, or Jan instead.
FAQ
Frequently asked questions
Does Hidini work with Zoom, Google Meet, and Microsoft Teams?
Yes. The overlay never appears in shared or recorded output from Zoom, Google Meet, Microsoft Teams, or any other tool that captures your screen. You see the full interface while everyone else sees a clean desktop.
How much does Hidini cost?
The app starts free with 50 AI credits and 10-minute demo sessions. Pro is a one-time purchase of $79.99 that unlocks unlimited session length, 500 credits, and bring-your-own-key support. There is no subscription.
Source: Current pricing
Which AI providers does Hidini support?
Hidini comes with preconfigured AI and included credits, so it works out of the box with no setup. You are also free to connect your own API keys for Claude (Anthropic), GPT (OpenAI), or Gemini (Google), or run fully local models through LM Studio, Ollama, or Jan at zero cost. Deepgram and Groq are supported for fast transcription and inference.
Source: Anthropic API docs , OpenAI API docs , Gemini API docs
What does the Hidini overlay show during an interview?
The overlay shows a live transcript of the conversation, AI hints for the current question, and on-demand analysis of anything on your screen, such as a coding problem or an architecture diagram. Everything is controlled with keyboard shortcuts, so you never have to click away.
What is Hidini?
Hidini is a native macOS app that gives you live AI help during technical interviews. It shows real-time transcription, AI hints, and screen analysis in a floating overlay that stays invisible to screen sharing in Zoom, Google Meet, and Microsoft Teams.
Blog
Latest from the blog
Getting Started with Hidini
A complete guide to installing Hidini, choosing your AI provider, and running your first interview session.
How Screen-Sharing Invisibility Works
What Hidini's invisibility means in practice: what you see, what the interviewer sees, and how to verify it yourself before a real interview.
Choosing the Right AI Provider for Your Interviews
A practical comparison of Claude, GPT, Gemini, and local AI for technical interview assistance: accuracy, speed, cost, and privacy.
Download Hidini for macOS
Free to try, no subscription required. Install in seconds and start your first session.
macOS 14 Sonoma or later · Apple Silicon and Intel