It's not illegal, but you should pay attention to compliance and legality besides chatting.

Of course, dating software is legal, but people who use dating software are not necessarily legal. This is just like chatting and making friends on QQ in the past. A few years ago, how many people were cheated because they went to see QQ users, so whether the software is legal is not the key. The key is who uses this software. Many criminals like to use legal platforms for illegal activities.