Castrix turns any browser into a broadcast-grade teleprompter. Write your script, scan a QR code on any screen or phone, and go live — with perfectly synced displays, a phone remote, and three scroll modes including voice tracking.
Everything a prompter operator expects — without the hardware cart, the cables, or the installs.
One controller drives every display — external monitors auto-fullscreen, iPads and iPhones pair with a QR scan. No apps, no installs, no limits.
Every screen keeps the exact same line under its reading arrow — regardless of screen size or font size. No drift, no jumps, just a smooth glide.
Scan a QR and your phone becomes the console: start/stop, speed, marker jumps, timers, even the emergency message. Bluetooth clickers work too.
Manual speed for classic operation. Timed mode to finish in exactly 4:00. Voice mode that follows your words — or scrolls only while you're talking.
Bold, highlights, and colors — exactly what the host sees. Import .txt, .docx, or .pdf, get an instant read-time estimate, and save multiple shows.
Mirror-flip any screen independently for beam-splitter rigs, and set text size per device. The talent's glass and the operator's monitor each get it right.
Time-of-day clock, count-up or count-down timer with a 0:00 flash, a 3/5/10-second countdown before scroll, and a progress bar with time remaining.
Direct peer-to-peer between your devices, with automatic HTTPS relay fallback when the venue's network fights back. It just connects.
Castrix keeps a private layer between the operator and the talent — so you can run the show without ever breaking it.
Annotate the script with cues, timing notes, and reminders that appear on your controller — and never on the host's screen.
Drop invisible markers anywhere in the script. Jump between segments instantly from the controller or the phone remote — the host never sees them.
One tap launches a fullscreen, red-bordered private message to the host — "WRAP NOW", "GUEST CANCELED, PIVOT" — until you take it down.
Start, stop, adjust speed, jump markers, and run timers from a QR-paired phone anywhere in the room — or from a Bluetooth clicker in the talent's hand.
Type it, paste it, or import a .txt, .docx, or .pdf. Style it with bold, highlights, and colors — and see the estimated read time instantly.
Open Castrix on any monitor, iPad, or phone and scan the pairing code. Every screen snaps into perfect line-for-line sync. No installs, ever.
Hit start from the controller, your phone, or a clicker. Pick manual, timed, or voice mode — and let the glide engine keep every screen on the same line.
Try everything free for 7 days — no feature gates during the trial.
No. Every display — external monitor, iPad, iPhone — is just a browser tab. Scan the pairing QR code and the screen joins the show instantly. External monitors even go fullscreen automatically.
Yes. Mirror flip is set per device, so the iPad behind the glass can be flipped while your operator monitor stays normal. Text size is per-device too, so each screen is tuned for its distance.
Castrix connects your devices directly, peer-to-peer, whenever possible — and automatically falls back to a secure HTTPS relay when the network blocks direct connections. It works over any network that can load a web page.
Yes. Any phone becomes a full remote by scanning a QR code — start/stop, speed, marker jumps, timers, and the emergency message. Bluetooth presentation clickers are supported as well.
.txt, .docx, and .pdf. Scripts keep rich-text styling — bold, highlights, colors — and Castrix shows an estimated read time the moment your script loads. You can save multiple shows and switch between them.
Set up your first show in minutes — script, screens, remote, live. Free for 7 days with every feature unlocked.
Start free trial