The lightning app is about the best app to control an Auralic product with although I do dislike IOS software in general.
You can also control it with Bubbleupnp from android devices if you do not like Apple devices.
Not quite as intuitive but still gets the job done.
I used both for an Aries Mini until I sold and went with a super integrated and had no need of a separate streaming unit any longer.
One point to bear in mind the Lightning app will NOT work on anything below ios11. So this rules out all older ipads, iPods and iPhones.
I had to buy an ipad mini2 just to run the darn app!
Actually no surprise at all as when Apple rolled out ios11 and declared a huge number of devices would not be capable of updating to it, they made them near obsolete overnight.