Side Channel Data Leakage: Keystroke Logging: UITextView field is editable.

[Grazfather]

https://github.com/prateek147/DVIA/blob/master/DVIA/DamnVulnerableIOSApp/DamnVulnerableIOSApp/Base.lproj/Main.storyboard#L915

You can probably just add editable="NO" there.