According to recent statistics, Americans use WhatsApp, Messenger, and iMessage as their top messaging apps. However, the popularity of messaging apps can vary depending on the age group and demographic. Younger users tend to prefer apps like Snapchat and TikTok, while older users tend to use Facebook and email. It's worth noting that privacy concerns have also impacted app usage, with apps like Signal and Telegram experiencing a surge in popularity due to their focus on privacy and security.