Where else can you find a baby monitor for less than $1 but the iTunes App Store? The Baby Monitor iPhone App developed by CodeGoo calls you when it detects noise.
Tech-savvy parents just program the call forwarding number in the Baby Monitor app and place the iPhone near the sleeping baby. Baby Monitor for the iPhone has an unlimited range, so it can also be used to see when kids arrive home or during a family vacation.
Best of all, the Baby Monitor app costs 99 cents from iTunes--an incredible bargain, considering even the simplest secondhand baby monitors still hover around $15.