Never thought I'd be the kinda momma to have an app for my baby, but....
I've been using Huckleberry for about 10 days now and have to say I'm impressed.
Essentially, it's an algorythm predicting when baby's tired, but not over tired. It's a bit creepy, actually, how spot on it is. I wouldn't pay the subscription (maybe my baby's sleep isn't as bad as I thought as we already do most of what they suggest in their "plan")but it's handy when you gotta try to remember how long she's been awake, how long since she fed, when did I last change her nappy, is she crying cause she's teething, tired, hungry.........and then you get a txt saying: 15minutes until naptime. I put baby down 5 minutes later and 7 and a half minutes later she's snoring. No tears, no breakdowns, no hysterical wake ups every 10 minutes becaus3 she's overtired.
I'm impressed. If you have trouble keeping up with nap times, try it. It's free.
P.s. I wish I was getting paid by them, but I'm not. I'm just sharing my experience.