Chrome extension or desktop app for an AI interview copilot?

What an interview Chrome extension is

A Chrome extension is a small program installed from the Chrome Web Store that adds features to the browser. Interview-helper extensions typically listen to a meeting, detect a question and show a suggested answer in a panel. Looking at public Chrome Web Store listings (checked 13 November 2026), the approaches differ:

• One extension, InterviewIQ, says it stores answers you prepared, shows them when a question is detected, and tells you to start Google Meet with captions on. The listing says it works best for conversation interviews, "not live coding tests".
• Another listing named Interview Copilot (an unrelated product that shares our name) says it "monitors speaker audio and screen, detects questions, and generates answers", and that speech recognition runs locally in the browser. The listing does not explain how the screen is monitored.

These are two examples, not a ranking, and we have not tested either one. The point is that the category is broad: some extensions are prep notebooks, others are live answer generators.

How a Chrome extension gets audio

Chrome's extension API for tab audio is tabCapture. According to the Chrome developer documentation, it "lets you access a MediaStream containing video and audio of the current tab". Three details from that page matter for interview use:

• It needs a user action. The docs say it "can only be called after the user invokes an extension, such as by clicking the extension's action button."
• It is per tab. It captures the current tab, and capture stops when "the tab is closed, or the media stream is closed by the extension." If your interview is in a native Zoom or Teams app instead of a browser tab, a tab-capture approach has nothing to capture.
• Muting side effect. The docs note that "audio in that tab will no longer be played to the user" unless the extension routes the stream back to the speakers. A badly built extension can silence the call.

The alternative is screen sharing from a web page through getDisplayMedia. MDN's documentation says the browser "will ask the user to confirm the sharing request, and to select the content to share", that audio is optional and may be missing from the stream, and that the machine sharing "will display some form of indicator so the user is aware that sharing is taking place."

Why extensions are limited and easy to notice

We can only state what the documentation supports, and it supports these constraints:

• Install prompts and a public listing. Chrome's docs say some permissions "trigger a warning that users have to allow" at install. Store listings are public, with a privacy section where the developer discloses data handling.
• Browser-only scope. Everything happens inside Chrome. An extension cannot hear a native meeting app, and it lives in a browser profile that may also be where an assessment site runs.
• Capture indicators. Display capture shows an indicator on the sharing machine, per MDN. How a given browser draws it is up to the browser.
• Policy exposure. A browser is also what many assessment and proctoring tools inspect. Whether a specific platform detects extensions is something each platform decides, and we have not confirmed it for any named platform. See can HackerRank detect AI and can Codility detect AI for what those platforms say publicly.

None of this says an extension will be detected. It says an extension lives in an environment that is shared, inspectable and governed by browser rules, which is a different risk profile from a separate app.

What a desktop overlay does differently

Interview Copilot is a desktop app for macOS and Windows, with a Linux beta. Instead of living in one browser tab, it listens to the audio your computer plays, so it works with Zoom, Teams, Meet or a browser tab alike. It transcribes the interviewer, suggests answers in an overlay, can solve a coding problem from a screenshot, and can show the answer on your phone as a second screen.

On the window itself: on macOS and Windows the overlay asks the operating system not to include it in screen capture. On Linux the window is visible. Whether it is hidden in a screen share depends on the program doing the sharing, so test with a private share first. This is a request to the OS, not a guarantee. The page invisible interview assistant goes into that detail.

Extension vs desktop app: a side-by-side

The part that matters most: the rules

Technology does not decide whether using a copilot is acceptable. The employer does. Some companies allow notes or AI during a call, some ban any outside help, and many assessment platforms state their own terms. Breaking a stated rule can end an application, and an offer can be withdrawn later if it comes out.

So the honest path is simple. Before a live interview, ask the recruiter: "Is it OK to use AI tools or notes during the call?" If the answer is no, do not use one in that interview. If the answer is yes or "ask for approval", get it in writing. Many people use a copilot for practice and mock interviews, where there is no rule to break. The free plan needs no card, so you can try it in a practice call.

How to choose

1. Where is your interview held? A native app means an extension will not hear it. A browser tab means either type can work.
2. Is it a coding assessment? One listing above says it is not for live coding tests. Check what any tool says about coding.
3. Read the privacy section. Listings disclose what data is handled. Look at what is sent to a server.
4. Test privately first. Share your screen in a private call and see what the other side sees.
5. Ask about the rules. Always.

Sources

• Chrome for Developers: chrome.tabCapture API
• Chrome for Developers: permission warnings
• MDN: Using the Screen Capture API
• Chrome Web Store: InterviewIQ listing
• Chrome Web Store: Interview Copilot extension listing (unrelated to our product)

Checked 13 November 2026. Extension features and listings change; verify on the store page.

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