What it is
Write or paste a script, point the phone at yourself, and read it scrolling over the live camera feed while you record. Takes land in a review screen where you keep them or shoot again; keeping saves straight to Photos. Scripts are stored on the device, and the scrolling overlay is a reading aid only - it is never burned into the recorded file.
Why
The App Store category is dozens of near-identical apps, and the reviews of the biggest ones all complain about the same things: a paywall before you have recorded anything, features that were free until an update took them away, subscription traps, and sync that eats your scripts. The differentiator here is not a feature - it is not doing any of that.
So: the whole loop works on first launch with no paywall and no signup, there is no billing of any kind in v1, and nothing syncs anywhere because there is no account and no backend to sync to.