GlassLineThe teleprompter that follows your voice.
Read your script out loud on Android and it scrolls to keep up. Or set a words-per-minute pace and let it scroll itself — no microphone, no permission, no connection.
No account, no sign-in. Scrolling mode is free forever and works offline.
It expects you to be human
Speech recognition mishears things. Speakers hesitate, drop a word, say one that was never written down. A prompter that demands a perfect read is worse than one you nudge yourself.
recogniser
heard thereThere isis nobodynobody uh behindbehind thethe cameracamera holding queuecue cardscards where the
script
went
The filler matches nothing and costs nothing. “Queue” for “cue” still lands. The word that was never said is stepped over, not waited for.
GlassLine matches loosely and only ever moves forward. Whatever comes back from the recogniser, the script never jumps backwards under you and never races off down the page.
Built for the moment the camera is rolling
The script can sit in a floating window over your camera app while you film, in whichever of three shapes suits the shot.
Android decides how big that window is and never tells an app. The only thing left to choose is its proportions — and since the area is roughly fixed, that choice is really a choice of type size: a wide strip gives you the biggest words and the fewest lines, a tall column the most lines at the smallest type.
Android also hands the microphone to whichever app is recording video and gives everyone else silence, so voice scrolling normally dies at exactly the wrong moment. An optional voice-scrolling service — Android’s one documented exception — keeps it alive during a take. It stays off until you switch it on, it cannot read your screen, and your video keeps its own sound.
and it keeps following you even while you film, which is the whole idea, and the reason the window is here at all: you read, the camera rolls, and nothing in between
and it keeps following you even while you film, which is the whole idea, and the reason the window is here at all: you read, the camera rolls, and nothing in between
and it keeps following you even while you film, which is the whole idea, and the reason the window is here at all: you read, the camera rolls, and nothing in between
What it costs, plainly
Word recognition is the expensive half, and it is the only half that ever asks for anything.
- Scrolling mode
- Free, always. No microphone, no permission, no connection — a whole script reads start to finish with nothing granted and nothing on the network.
- Voice tracking
- Once the app has been open a while, starting a voice session offers you a short video first. Decline it and carry on reading in scrolling mode; nothing is locked, and a session already running is never interrupted.
- Your scripts
- Stored on the phone, and never uploaded.
- What you say
- Goes to the speech recognition service built into your phone — on most phones Google’s, which may do the work over the network. GlassLine never saves the audio and never sends it to a server of its own.
- An account
- There isn’t one.
Android 7.0 and later. Free to install.