Are there apps to help manage newborn feeding routines?
I can't vouch for their quality (lacking as I am the principal components for feeding newborns), so maybe someone can help me out there, but there certainly are – and a lot to choose from, to boot.
The do-what-they-say-on-the-tin iOS apps 'Baby Feeding Log' and 'Baby Nursing/Breastfeeding' let you keep track of how much you newborn's been fed, and when. The former is a little more spartan (and apparently prone to crashing), whilst the latter also lets you record the baby's weight, height, and other milestones, and gives you the option of adding photos to each.
In fact, there's not quite so many apps specifically for feeding – most modern parenting can be done all in the space of a single program or website – but if that's what you're after, iBaby Feed Timer has the cheesiest name but the best reputation. Recommended by NHS midwives, it lets you time feeds as they happen and provides analysis afterwards (kinda like Sleep Cycle). The best bit? Large buttons on the left and right, all the easier to hit if you've got a fussy eater!