I think you or the mods should remove your comments because they are potentially defamatory. There is indeed no evidence that the Dash author himself was responsible, he says it was a family member.
“Almost 1,000 fraudulent reviews were detected across two accounts and 25 apps for this developer so we removed their apps and accounts from the App Store,” Apple spokesperson, Tom Neumayr
They’re allegations, sure. I said that in my second comment. But Tom didn’t hedge his words there.
