You can modify the app in any way you see fit as long as you don’t use copyrighted material or suggest in any way illegal or fraudulent actions or uses.
2. Unauthorized use:
You are no allowed to use the app for illegal uses or to contact the persons using the app in order to incite them to perform illegal activities or to continue contacting them after they explicitly requested not to be contacted.
Failure to respect these guidelines will have consequences up to and including forfeiting the rights to use any TAP applications and might have additional consequences from Apple or law enforcement.