I’ve been noodling some ideas lately and I sort of rediscovered an idea I remembered I had from the past.
Most mobile app interactions are 20-30 seconds in length (at most!). It makes a lot of sense to design an experience around these types/lengths of interactions. Some interactions go beyond that length and their design should be completely different.
You know you’re hitting the right area in the users’ brains when you find your app is the first thing they use in the morning and/or the last thing they use before sleep. This is an incredibly powerful place to exist in someone’s life.