Entertainment site Wonderwall caught up with a number of celebrities including Katherine Heigl, George Clooney, Selena Gomez, Ewan McGregor and Nick Jonas – to ask them what phone apps they think should be invented to address a few life’s mysteries that can’t yet be solved by a smartphone!

Revealing her dream app, Katherine said "Maybe they actually already have this, but I really thought it would be great if Whole Foods came out with an app that listed everything in every aisle so you could just click on what you want and then it goes into a shopping cart and then all they have to do is call the store with your credit card and they’ll deliver it."

Visit Wonderwall to find out some of the weird and wonderful apps the stars wished really existed.