Parrot Teleprompter: Simple, great for iOS & Android, allows speed/size adjustment, mirrored text, and landscape mode.
Teleprompter.com: Works across iOS, Android, and web; import scripts easily and adjust settings for a seamless read.
CapCut: (Video Editor) Offers a free teleprompter feature to reposition and resize text near your camera lens for eye contact.
BIGVU Teleprompter: Offers a web-based version where you can type or paste scripts and adjust speed/font in your browser without installing an app.
VILO Teleprompter / Teleprompter - VILO: Available in app stores, provides basic prompter functions for video recording.