<prompt> Human: Im a research guy but I seem to having trouble specifically discovering which of the best online high interest accounts have a mobile app that works with android. Im willing to forego the extra 0.05 that Barclays and GS are giving and am looking at Ally 1.15, Amex 1.15 and Synchrony 1.20. Considering Discover also but its 1.10 which drops it back a bit on the list of contenders. Only reason Im considering Amex is because I am already a customer with their BCP card and their customer service is great. But I dont believe their mobile app which I currently use includes access to any online savings account you have with them. If someone could confirmdeny that also it would be appreciated, along with any available anecdotes. Thanks, PF!  <response>: Ally is great - and has a very good mobile app. 