Like the user interface. But the app has been very glitchy lately; all my messages "ghost" for a few seconds or minutes. Today someone texted me while my phone was turned off, showed me the sent text messages on their phone. Those messages still haven't shown up on my messages app hours later, after restarting. Now I'm wondering how many texts I've missed through my years of using the app. If I'm questioning the basic functionality, I'll need to find another app.