Teleprompter apps scroll a script well. None fix what the script does to your audio: to read off your phone you stand back, and at that distance the mic records the room with you. Takewell runs an open source speech model on the phone after each take, removing background noise and room echo, then levels the volume so nothing clips. On the review screen you flip between the original and the cleaned take and hear it. iOS Free on every take, no credits. Your video and audio stay on the phone.