There is an app for almost everything, soon also for AI, but what should the icon look like? There is no convincing solution yet, but there are many ideas.
The music app – a musical clef. The camera app, even simpler – a camera, the train app – the train logo, of course. And the one for the photo collection? A photo album? No, too simple. On the iPhone it’s a stylized flower in rainbow colors. Luckily at least it says “Photos” underneath, even though the app also stores videos.