No matter how well (or not-so-well) your baby sleeps at night, there's nothing wrong with needing a little outside help every now and then. Aside from the obvious role you and your partner play in teaching your baby to sleep, sometimes you just need to bring out the big guns, so to speak. With technology running the world, it's no surprise that there are lots of great apps to make sleeping easier for your baby — and you definitely shouldn't feel bad about downloading one (or all) of them.
I've had one of each — a "problem" sleeper and a great sleeper — and in both cases, I can testify to the power of a great app or white noise machine to help babies get to sleep and stay that way. The great thing about apps is they're completely portable, meaning that if your baby is fussy on the road, in the airport, or at Grandma's house, there's nothing stopping your from whipping your phone out and soothing them just like at home.
Some of the apps are simple white noise machines, while others have other features like timers, recorders, and sleep logs, but they're all designed with one thing in mind: helping your baby sleep.