Not safe for kids under 18
Whisper is an anonymous social networking app. Users post short text posts overlaid with pictures and anyone on the app can respond.
Social Networking

In-depth breakdown

Minimum Age Requirement
Messaging Capabillities
Users can post public comments or send private messages to other users. Also allows photo, audio, and video messaging.
Location Sharing
All posts on Whisper are location-based. There is no way to disable the geo-location feature.
Parental Controls
None. Apple and Android parental controls can be used at the device level.
While this app is intended to be anonymous, the posts are location-based, and the messaging feature allows for anyone to message a user.