So while the BA App, Rome2Rio, or Monzo might be stalwarts of the frequent flyer’s home screen, here are the clever, hardworking Apps our travel insiders swear by. The Timeshifter app works to help you prepare for jumps across multiple time zones by making simple, intuitive swaps before your trip that will prepare your circadian rhythm for your new location. It’s received a positive review from Conde Nast Traveller’s senior visuals editor, Chelsea Hughes, who used it on a trip from London to Australia, a gnarly 16-hour flight and 10-hour time difference, and genuinely didn’t feel any jetlag whatsoever – a genuinely impressive feat.