Mashable reports that mobile analytics company, Adjust, has a report to this effect. Adjust says:
"nearly 80% of the 1.2 million apps currently available are just sitting in the App Store with hardly any downloads at all.
Adjust calls them Zombie Apps – apps that are “just sitting in the App Store with hardly any downloads at all”.
It has been my opinion that beyond the 250,000 applications marked, a lot of duplication and redundancies occur in the average mobile platform’s app store. Duplications and triplications, and loss of visibility. Of course, none of these take away the merits of the App Store. It just puts things into perspective and helps with clarity.
Full details at Mashable.