macOS · Invisible overlay

Ace your coding interview
with AI on your side

An invisible desktop assistant that solves coding problems in real time. Sits on top of any window. Hidden from screen recordings.

Download for macOS See how it works

5 free requests · No credit card required

logo blind.codes Blind.Codes
5
Auto ▾ ⚙️
// Two Sum — return indices of two numbers that add to target
 
def two_sum(nums, target):
    seen = {}
    for i, n in enumerate(nums):
        diff = target - n
        if diff in seen:
            return [seen[diff], i]
        seen[n] = i

How it works

Three keystrokes. That's all.

01 —

Capture

Press ⌘⇧S to screenshot your screen. The app window hides itself before capture.

02 —

Analyze

The screenshot is sent to AI which identifies the problem and writes a clean solution.

03 —

Read

The solution appears in the overlay with syntax highlighting. Approach first, then code.

Features

Built to be invisible. Built to be fast.

◈

Invisible overlay

Always on top, content-protected, hidden from screen recordings and screenshots.

◈

14 languages

Python, JavaScript, TypeScript, Java, C++, Go, Rust, C#, Swift, Kotlin and more.

◈

Auto language detection

Detects the language from context, or force one with the selector.

◈

Syntax highlighting

VSCode Dark+ color scheme. Clean, readable, no noise.

◈

Stealth mode

Press ⌘⇧L to make the mouse pass through the window, your interview browser never loses focus.

◈

Instant hide

Press ⌘⇧H to instantly hide or show the window at any time.

◈

Opacity control

Adjust transparency so the overlay blends naturally with your screen.

Two perspectives. One screen.

Your interviewer sees your IDE. You see the solution.

Interviewer's screen recording THEIR VIEW
● zoom — screen share
def
  solve(nums, target):
    # thinking...
    pass
— no overlay visible —

The Blind.Codes window is content-protected and excluded from all screen capture APIs. It simply does not exist in their recording.

Your actual screen YOUR VIEW
● zoom — screen share
def
  solve(nums, target):
    # thinking...
    pass
Blind.Codes ⏱ 3
# hash map approach
def
 solve(nums, t):
  seen = {}
  for i,n in
    enumerate(nums):
    if t-n in seen:
      return ...

The overlay floats on top of everything, semi-transparent, always visible to you — positioned wherever you want on your screen.

See it in action

Watch how Blind.Codes works during a real interview.

Pricing

Pay once. No subscription.

Starter
$5 one-time
20 credits
  • 20 AI analyses
  • All languages
  • No expiry
Get started
POPULAR
Standard
$10 one-time
40 credits
  • 40 AI analyses
  • All languages
  • No expiry
Get started
Pro
$25 one-time
110 credits
  • 110 AI analyses
  • All languages
  • No expiry
Get started

New users get 5 free credits — no credit card required.

Download free

Keyboard shortcuts

Everything is a keystroke away.

Capture screen & analyze

⌘ ⇧ S

Stealth mode (mouse passes through)

⌘ ⇧ L

Hide / show window

⌘ ⇧ H

Reset opacity

⌘ ⇧ O

Reset to home

⌘ ⇧ X

Test your setup before the interview

Make sure nothing gets flagged. Takes 30 seconds.

Open the Stealth Benchmark in your interview browser and run all checks — focus loss, tab switch, DevTools, shortcuts and more.

Free · No install · Open source

▶ Run stealth test
01 —

Enable Simulation mode

Open Settings ⚙️ and toggle Simulation mode on. No credits used — the app behaves exactly like in a real interview.

02 —

Enable Stealth mode

Press ⌘⇧L to activate Stealth mode. Your mouse passes through the overlay and your browser never loses focus.

03 —

Run the benchmark

Open the Stealth Benchmark, click Run all checks, then press ⌘⇧S to trigger a capture. Aim for 100%.

Free to try · No credit card required

Ready to stop struggling?

Download Blind.Codes and get 5 free analyses instantly.

macOS — Apple Silicon macOS — Intel Windows — x64