DETAILED FEATURE COMPARISON
Side-by-side feature and performance comparison between Standard and PRO tiers.
| FEATURE | FREE | PRO |
|---|---|---|
| Online cloud keymap backup | 15 backup snapshots | Unlimited cloud backup |
| Picture resolution on PC | Up to 1080p (Full HD) | Up to 2K (phone native sharpness) |
| Frame rate on PC | 30 / 60 / 90 FPS | 120 FPS ultra-smooth |
| USB video transmission bitrate | Up to 64 Mbps | Up to 120 Mbps |
| Mouse & keyboard response speed | Standard 125 Hz | 1000 Hz instant reaction |
| Windows Pro authorization | Free limits after sign-in | Online capability, 5–15 minutes; no offline Pro |
| Smoothest mode & Dedicated game screen | — | |
| Forward game audio to PC speakers | ||
| Account badge & Multi-device pairing | — | PRO Badge & Priority pairing |
FREE
STANDARD- Freely customize keymaps right on the game screen
- Smooth camera aim with adjustable mouse sensitivity
- Auto-detects each game and saves custom key profiles
- Crisp 1080p Full HD picture, smooth at 30 / 60 / 90 FPS
- Listen to game audio directly through PC speakers or headphones
PRO
- Unlock 2K high resolution, sharp as your phone display
- Unlock ultra-smooth 120 FPS for high refresh rate monitors
- Smoothest pacing mode, keeps frame rate rock-solid without tearing
- Ultra-fast 1000 Hz mouse response, zero delay instant reaction
- Windows Pro uses a signed Ed25519 capability renewed online
- Auto cloud keymap backup, easily restore when switching devices
- Play borderless fullscreen (F11) or on a dedicated second monitor
- 1 computer + 1 phone with priority multi-device pairing
- Exclusive PRO badge displayed on your account
- Time adds up automatically when you enter more license codes
HOW TO ACTIVATE PRO
Three simple steps to unlock all premium features on your desktop computer.
Get License KeyCreate an account
Sign in securely with your verified email
Enter a CK-... code
Paste your license key in the console below
Sign in to CastKey Desktop
Open CastKey Desktop and enjoy your game
Redeem Your Pro License
Enter your 16-character license key (e.g. CK-PRO-8888-9999-ABCD) to unlock Pro on your account.
FREQUENTLY ASKED QUESTIONS
Quick answers to common questions about PRO features and benefits.
See all >Pro unlocks a sharper 2K QHD picture, 120 FPS ultra-smooth mirroring, 1000 Hz HID polling rate, and unlimited keymaps. You can activate an authorized monthly or lifetime license code; each additional code automatically extends your duration.
Click 'Start Free Trial' on the PRO card, register a brand-new account and verify your email to use the 15-day Pro trial. Windows Pro also requires online capability renewal. Each email is eligible once; when the trial ends, the account automatically returns to Free.
Each Windows Pro stream needs a fresh server-signed Ed25519 capability bound to your account, installation and device key. Capabilities last 5–15 minutes and require online renewal. If renewal fails, the Pro stream stops and the app returns to Free. The 7-day local checkpoint only displays status and cannot unlock Pro.
A Pro license supports 1 computer + 1 phone simultaneously with priority multi-device pairing on your Web Dashboard. You can easily switch connected phones anytime without losing your keymap configurations.
CastKey is 100% safe. It acts as a genuine HID hardware peripheral driver through direct USB. It does NOT inject DLLs, hook game memory, or modify game files, ensuring complete anti-ban safety across Free Fire, PUBG Mobile, and other competitive games.
Yes. Your Pro license is linked to your central CastKey account. You can sign in with the same account across both the Windows desktop client (via USB cable) and the standalone Android OTG adapter app without extra fees.