CastChat is an app that allows you to send "broadcasts" to other users in your area, with a range of up to 20km. These broadcasts will be sent directly to your phone, so there is no need to refresh/pull from a database each time you want to see if there are any new messages. You can then message users privately, if you wish. There is no need to make any accounts!
I think this app would be great for anything that would require you to get help/spread your thoughts to other people that you may not know, but you would like to be in your community. Whether that looking for classmates to study with, or just talking about something that is specific to your area (sports, hanging out, etc).
I just released my app last night and am lacking users. I would greatly appreciate it if you could try it out and give me feedback on what you think of it (designs, colors, features?)
I will be checking back here frequently, so feel free to leave a comment!!
Just search for "CastChat" in the Google Play Store