There's a hidden surprise in the iOS app that allows you to change the app's icon. To find it, tap the Streaks button (flame icon) at the top of the home screen.
You can scroll down to see the custom app icons. You can select any icon that's available to you. The more snippets you add, the more icons you'll unlock!
We use the total sum of snippets you have added across all your Journal projects to unlock the icons. We do not consider snippets in Freestyles and Freestyle Collabs in this sum.
To reset the app's icon to the original one, open the icons' screen and tap "Reset Icon" at the top right.
Tip: You might have to restart your phone to see the icon change on your home screen.