Two way radio apps don’t come any easier than Walkie-talkie. It’s simple to use and is great-looking, too. The app works on Android, iOS, and in any desktop web browser. Just tune your devices to the same frequency, push the button, and you’re ready to talk.
You don’t have to set up an account, and the app doesn’t require any special permissions. The only point to keep in mind is that your chosen channel is not private, so if anyone else happens to tune to the same frequency, they’ll be able to listen in.
Walkie talkie apps work like the real devices. You listen to all the activity on your chosen channel, then hit the big Speak button when it’s your turn to talk.
Walkie talkie apps require Wi-Fi or data connections, although due to the heavily compressed audio, they use very little data.