Riding on a hit: Ketchapp's Pineapple Pen leverages another pop culture hit, the PAPP song.
iPhone owners continue to upgrade their handsets to iOS 10 en masse, as Apple's own software continue to dominate the free charts.
The new game from YouTube star PewDiePie, Tuber Simulator, was the top free app not from Apple, Facebook, Google or Snapchat in many territories, but in the UK it was meme-based Pineapple Pen that muscled Pewds, Apple, and the others out of its way to take the #1 spot on Oct 6, 2016.
