Fontkey is a keyboard app that lets you use unique fonts to customize your social media profiles on Instagram, Snapchat, Tiktok, Roblox, Twitter, Tumblr, and more. With Fontkey installed, you can come up with text messages and social media bios for your Instagram bio or Snapchat story. This app is particularly useful for those who work in the digital marketing industry and those who work as social media managers. This helps create more engaging posts, thanks to its stylish and cool fonts. Plus, the emojis are there to add a flair to your copies. Lastly, you may easily switch keyboards from time to time, just in case you need to.