having your phone be black and white makes every app 10x less addictive. i turn my phone on & off black and white depending on what i’m doing and there’s an easy way to switch back and forth in settings by triple clicking the side button:
accessibility > general > accessibility shortcut > color filters
and then you can go to color filters (just search it) and choose grayscale. i set mine at ~90% intensity so i can still see a hint of color.
i love looking up from my phone and thinking “wow, the world is so colorful”