Built to stay invisible, and provable on your own machine.
An interview is a lot to put on the line. So instead of asking you to trust it, we’ll show you it works.
TopCoder gives you real-time help during a live interview, which only works if the interview never catches it. There are three places a tool can slip. It shows up in the screen you’re sharing. Or the page catches you the second you click away, or logs a keystroke your hands never touched. TopCoder shuts all three, and you can check each one below.
How it stays hidden
Invisible on screen share, even full screen
Share or record your screen and TopCoder isn't in it. It's not hidden behind another window or shrunk into a corner; it isn't in the capture at all. macOS drops it from the frames Zoom, Google Meet, Teams, Webex, CoderPad, HackerRank and CodeSignal send out. One window or the whole screen, the result's the same.
Nothing an interviewer would spot
It runs under a plain, system-style name and stays out of the Dock, the Cmd-Tab switcher, Activity Monitor and Mission Control. If an interviewer has you share your screen and click through your open apps, nothing looks off.
Your mouse and focus never leave the page
Your clicks and scrolling land on the interview window underneath TopCoder, cursor included. The browser reads it as if your mouse never moved and your tab never blurred, even while you're typing into TopCoder. Nobody is watching this happen: when a tab blurs, it fires an event the interview site's own code records, and that's the flag it looks for. The page just never sees you leave.
Your shortcuts never reach the browser
TopCoder grabs its own keyboard shortcuts before the browser can. Those keys stop at the system level and never touch the interview tab, so a keylogger in the page records none of them. It intercepts only those exact keys. Everything else you type reaches the page normally, so nothing about your typing stands out.
Verify the stealth yourself
Test 1 just needs a second device to watch your screen share. The other two take under a minute once it’s installed. Install it first, then run all three before your interview.
Download TopCoder for MacProve it’s invisible on capture
- Start a meeting on this Mac (Zoom, Google Meet, Teams, any app will do).
- Share your entire screen in the meeting.
- Join the same meeting from your phone and look at the shared screen.
- Confirm the TopCoder overlay is not visible on your phone’s view.
Whole screen or a single window, you get the same result: TopCoder isn’t in the feed.
Prove you never lose focus
- Open webbrowsertools.com/test-always-active in the browser tab you would interview in, then press Start. It starts counting every time the tab loses focus or gets hidden.
- Start an interview session in TopCoder. The overlay only switches to click-through once a session is running.
- Now do everything you would mid-interview: move your cursor onto the overlay, click it, scroll its answers, and type into it.
- Look back at the counters. They all stay at 0, because the browser never registered that your cursor or your attention left the tab.
No one has to be watching. A blurred tab fires a browser event, and interview platforms record it automatically to flag that you switched windows. This page listens for that same event, and TopCoder never trips it.
Prove your shortcuts aren’t logged
- Open the W3C key event viewer and click into the page so it has keyboard focus. It shows every key the browser receives, the same thing a site’s keystroke tracker would see.
- Start a session in TopCoder, exactly as you would in a real interview.
- Press TopCoder’s shortcuts, like Cmd Q, Cmd G and Cmd J. The log stays empty, because those keys are stopped before the page ever sees them.
- Now type a normal sentence and watch it log every letter. That is the proof that only your shortcuts are caught, while your real typing passes through untouched.
A keystroke tracker can only log what reaches the page. Your shortcuts never do.
Walk in knowing it works.
Every new account gets one free interview. Run all three tests on your own machine first, so on interview day the tool is the last thing on your mind.