You know what? I built this teleprompter app for creators who struggle to read scripts while recording. Most teleprompter apps in the market are expensive (they charge you around $20/month), so in this full build I show you how to create a professional alternative from scratch using React Native + Expo—iOS and Android—without the theory fluff. You’ll see the complete flow: paste or write a script, pick your video ratio (portrait/landscape/square), set the scroll speed (lazy/slow/easy/super fast), and jump into a clean dark UI with that purple accent theme. Inside the recording screen, I add the features that actually matter in real usage: a floating teleprompter overlay, transparency control, optional word highlight, countdown before recording, camera flip, and live speed control while you’re recording. I also cover the advanced settings like video quality (720p/1080p/4K) and stabilizer, then I show you how to save the final video to your camera roll or share it directly. Finally, I walk you through the exact setup to run and test locally: install packages, start Expo, scan the QR with Expo Go, and test on your phone. I also explain the project structure (assets, screens, utils) and why I store scripts locally with AsyncStorage—no backend needed—so everything stays simple and stable.