Are you really having contractions or is it a false alarm? It's a question moms-to-be have been asking for years, but Bloomlife intends to take the guesswork out of when it's really time to run to the hospital. The contraction tracking device features a sensor embedded into an electrode patch. Simply place the patch on an expectant mama's belly and load the free app. Within seconds, you'll see how long each contraction lasts and how it compares to previous contractions. Eventually, the founders of Bloomlife hope to expand the sensor's readings to include fetal heart rate and other vital information. The patch can be worn up to one week and each pack comes with five patches. Bloomlife is available for rental at $150 for 1 month, $250 for 2 months, and $300 for 3 months.