Guys, which app to chat do you use most on cell phones?

WhatsApp

I just use SMS / Imessage, no reason for me to use an app.

The phone itself. As in, calling people and talking to them. By design, that's the primary purpose of a cell phone, however some people seem to need to be reminded this more and more frequently. It is annoying af to communicate with someone by texting in one way or another, at maybe 20 words per minute, instead of talking at 150 words per minute.

Pinger (Text Free)