Cowinx

Cowinx on Zoom, Meet, Teams & Webex

The stealth itself is the same everywhere — it works at the macOS level, below any meeting app. The only thing that changes per platform is the screen-share UI. Here is the one rule that applies to all of them, plus Zoom's one specific setting.

Prerequisites

Cowinx must be installed and granted all three permissions first — see Install & first launch. And whichever platform you use, finish with the pre-flight check.

The one rule

Cowinx's overlay is excluded from screen capture by the operating system, so it stays out of the outgoing video regardless of which meeting app you run. Your job is simply to confirm that — and to avoid share modes that grab the whole display unpredictably.

Share a specific window or screen — then watch it from a second device.

Pick the share target deliberately rather than letting the app auto-detect, and verify the result from a second device before the real call. That single habit covers every platform below.

1

Zoom

Zoom is the most common platform for technical interviews, and it has one setting that matters. Its screen capture mode controls what Zoom can actually see when you share — and the wrong mode can expose overlays.

Enable Advanced capture with window filtering

  1. 1
    In Zoom, go to Settings → Share Screen → Advanced.
  2. 2
    Under Screen capture mode, select Advanced capture with window filtering.
  3. 3
    This mode captures only the windows you explicitly select — it filters out floating panels, overlays, and system-level windows.
  4. 4
    Close and re-open the Settings window to confirm the selection is saved.
Zoom Settings → Share Screen → Advanced → select Advanced capture with window filtering as the screen capture mode

Important

The default Auto-detect can capture overlays and floating windows. Always switch to Advanced capture with window filtering before any Zoom interview.
2

Google Meet, Microsoft Teams & Webex

These don't need a Zoom-style capture-mode setting — the same OS-level exclusion applies. The reliable habit is identical across all three:

  1. 1
    When you share, choose a specific window or screenfrom the picker rather than an “automatic” or app-detected option.
  2. 2
    Join the meeting from a second device (or use the platform's own self-preview) and confirm the Cowinx overlay is not in the shared view.
  3. 3
    Because the menus differ between apps and change between versions, treat the second-device check as the source of truth, not any single menu path.

Note

On any platform, re-run the second-device check after a meeting-app or macOS update — capture behavior can change between versions.
3

Solving during a call

Once you're in the call, the flow is the same everywhere:

  1. 1
    If the question is spoken aloud: just listen. Cowinx transcribes it in real time from the meeting audio.
  2. 2
    If the question is shared on screen: press ⌥S to capture the region with the question.
  3. 3
    Press ⌥⏎ to solve — in code, a system-design outline, or behavioral STAR format.

Need more help?

Check Troubleshooting or email cowinxlab@gmail.com.