Frequently Asked Questions
Got questions? Here are clear answers. The most common concern is privacy — so let's address it first: CastAngel does not send your screen, files, or personal data to any cloud server. Everything stays on your local network. Below are answers to the questions we hear most.
Privacy & Data
Does my screen or file data go to the cloud?
No. CastAngel does not send your screen, files, or personal data to any cloud server. All traffic stays on your local network. This is the core design principle of CastAngel.
Is CastAngel safe to use?
Yes. Since all data stays on your local network and no third-party servers are involved, the risk of data interception is minimal. Activation is verified locally against a hardware fingerprint.
Do you collect any personal data?
No. CastAngel does not collect, transmit, or store personal information. No telemetry, no usage reporting, no crash reporting. The application does not phone home.
Where is my data stored?
Screen data is displayed in the browser and not stored. Files are stored on the PC's desktop in user-named folders. Nothing is stored on any external server.
Setup & Requirements
Do I need internet to use it?
No. CastAngel works entirely on your local network. You only need devices connected to the same WiFi. Internet is not required for screen mirroring or file transfer.
Do I need to sign up or create an account?
No account, no signup, no login. Just run the app and open the URL it shows you. CastAngel doesn't collect email addresses or require registration.
Do I need to install anything?
No. CastAngel is a single portable executable. Double-click and it runs. No setup wizard, no service registration, no runtime dependencies. The viewing device only needs a browser.
Which browsers are supported?
Chrome, Firefox, Safari, and Edge — any modern browser with WebSocket support. No plugin or extension needed on the viewing device.
Which Windows versions are supported?
Windows 7 SP1, 8.1, 10, and 11 — both 32-bit and 64-bit. Two builds are shipped to match the target PC architecture.
Troubleshooting
Why can't I find my device on the network?
Ensure both devices are on the same WiFi network and the same band (2.4GHz or 5GHz). Some routers treat different bands as separate networks. Also check that Windows Firewall allows ports 12377 and 12399.
Why is the connection slow?
Local network speed depends on WiFi signal strength. Move closer to the router, use 5GHz if available, or reduce screen resolution. CastAngel uses delta compression to minimize bandwidth.
Why can't I access the URL from my phone?
Your phone must be on the same WiFi network as the PC. If you're on cellular data or a different WiFi network, it won't work. CastAngel is designed for local network use only.
Licensing
How does licensing work?
One-time purchase, hardware-bound. Your license is locked to the machine's SMBIOS and CPU ID — no account, no recurring fees, no online check after activation.
Can I move my license to a new PC?
Yes. Contact support with your old machine ID and we'll issue a new key for the new hardware at no charge.
What's the refund policy?
14-day, no-questions-asked refund. If CastAngel doesn't work for you, email us and we'll refund the full purchase.