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.
5 free requests · No credit card required
Blind.Codes
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.
● 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.
● 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.
New users get 5 free credits — no credit card required.
Keyboard shortcuts
Everything is a keystroke away.
Capture screen & analyze
⌘ ⇧ S
Stealth mode (mouse passes through)
⌘ ⇧ L
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
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.