Sarah Dales, founder of Airsave Travel answered on a false accusations recently:
"Out of the top 100 projects from CoinMarketCap only 30 odd projects have fully functional products. We have been on iOS AppStore from 2017 onwards and the app has gained a lot of traction. The logic is customer acquisitions through referral and paying the referrer a fee. The back-end safety of the App is verified by Apple before being put on their store and we would put the blockchain code on GitHub when its time, rather than presently as a half-baked code."
I am sure that app could not be verified by Apple if it was some sort of scam!