Your Androids. On your PC. In one file.

Mirror. Control. Screenshot. Record. Multi-device. Zero bloat.

Download · Start · Features · Shortcuts · FAQ

     

Built different

• One .exe. No installer. No Assets/. No Electron.
• Instant. Sub-2 ms recv → present latency. 60 fps. GPU-accelerated.
• Silent. No telemetry. No network calls outside your device.
• Native. Pure Win32 + D3D11 + D2D1. Not a web app pretending.
• Self-contained. ADB tools, Android agent — all bundled inside.

Features

• Live mirroring — 60 fps H.265 (H.264 fallback), hardware-decoded on NVDEC / Quick Sync, sub-2 ms end-to-end latency
• Full control — mouse, keyboard, scroll, multi-touch-like gestures
• Multi-device — switch between any connected phone instantly via the ▾ picker or Ctrl+W, no restart needed
• Lossless screenshots — native resolution PNG pulled straight from the device
• MP4 recording — variable frame rate, muxed on the fly
• USB — plug and play, no extra setup
• Health overlay — real-time FPS, latency, GPU/CPU usage, decode/render acceleration mode
• Zero install — no APK on the phone, no SDK or runtime required on your PC

Start

1. Enable Developer options → USB debugging on your phone.
2. Plug it in and accept Allow USB debugging.
3. Run askryn.exe.

No CLI, no config, nothing to install.

Shortcuts

Key	Action
Esc / Right-click	Back
Ctrl+H	Home
Ctrl+P	Power
Ctrl+S	PNG screenshot
Ctrl+R	Record to MP4
Ctrl+W	Switch device
Ctrl+D	Toggle health overlay
Arrow keys	D-pad navigation
Backspace	Delete
Enter	Confirm

Under the hood

Everything the app needs is packed inside the .exe — the Android agent (JAR) and ADB tools. On first launch, adb.exe and its two support DLLs are silently extracted next to the exe:

📁 anywhere you drop it/
   ├── askryn.exe
   ├── adb.exe           ← extracted on first run
   ├── adbwinapi.dll     ← extracted on first run
   └── adbwinusbapi.dll  ← extracted on first run

The Android agent is pushed to /data/local/tmp/ on the phone over ADB sync and runs via app_process — no APK install required. Video travels as H.265 (H.264 fallback) from the device → Media Foundation MFT (hardware decode) → NV12 → 3-slot ring buffer → D3D11 flip-discard swap chain with ALLOW_TEARING on fresh frames and vsync pacing when idle. The render thread only runs when there is actually a new frame or UI change, so idle GPU/CPU drop to near zero. The C++ runtime is statically linked — no Visual C++ Redistributable needed.

Requires

• Windows 10 1903+ or Windows 11 (x64)
• Android 11+ with USB debugging enabled

No ADB, no SDK, no runtime — nothing to install.

FAQ

Do I need to install adb or platform-tools? No. ADB tools are bundled inside the exe and managed automatically.

Do I need the Visual C++ Redistributable? No. The runtime is statically linked inside the exe.

Data collection? None. No telemetry, no network traffic to anything but your device.

Source available? No, binary-only release.

License

Apache 2.0. © 2026 zncodex. See LICENSE.

Not a scrcpy fork

askryn is written from scratch with a native Win32 + D3D11 UI. The only thing in common with scrcpy is the app_process + Java server pattern — standard across all Android mirror tools. No scrcpy code is used.

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