Not safe for kids under 18
Tinder is a popular dating app where users can upload and browse profile pictures and bio descriptions. If two users “match”, they can directly message one another. Sexual/Mature content is likely.

In-depth breakdown

Minimum Age Requirement
Messaging Capabillities
After users “match” by both approving of the others’ profile/bio, they can send direct messages, along with voice and video calling.
Location Sharing
Location is used to connect users within a certain radius and cannot be turned off while using the app.
Parental Controls
None, though Apple and Android parental controls could be used at the device level.
Tinder started on college campuses and has a reputation for being a “hook up” app that facilitates sexual encounters. Owned by The Match Group (Like OkCupid, Hinge, and Match).