Only two? Between regular texting (sms), WhatsApp, Facebook and Facebook messenger, Signal, Instagram, Twitter, Slack, Discord, Snapchat, Tinder, and finally WeChat, which are currently installed on my phone (space is cheap these days) I'm jealous. I probably make regular use of like seven of those. They mostly have different groups of people on them, though there's a lot of overlap when sharing content within an app (eg Instagram content is shared via Instagram, Twitter content via Twitter, even when that person has other ways of contacting me). I wonder why our use cases are so different! Is it down to the fact that the people I talk to are terminally online?