I like it.

It does what it says it will do, which is to wake you up before you completely fall asleep. As a teen male who likes to go nightclubbing, I especially need my sleep. One full sleep cycle before I hit the party will last me enough energy for 4/5 hours. Highly recommendable for people who need to sleep for a short period of time or just wants to get a small quick boost of energy.

Ross Moreira about Sleep Cycle power nap, v1.0