What kind of products are totally overdone?

Maybe it is only me, but I see certain categories of online products that seem to be like "copy-paste" and the market is overcrowded by them. (and they repeats in the PH charts too often as well)

They are especially these:

• AI writing tools

• social media apps (I do not think that something breath-taking can be developed there)

• productivity apps (trackers)

• fitness apps

We are in an era when everybody can have some online product or app.

Which online solutions do you think are overrepresented in the market, and vice versa, which ones are missing here and could potentially be a "blue ocean"?

In my opinion, there is a few apps that:

– help you learn sciences (e.g. physics, mathematics, chemistry, law, medicine)

– Parents + kids apps (for common activities)

(But it is only my own perception.)