Everyone over 30 knows that feeling on top of your game when you’re sleepy gets harder and harder with age. Thankfully, Sleep Cycle tracks your movements while you sleep to determine the best moment to wake you up so that you feel refreshed during the day. When we sleep, we go through several sleep cycles that last approximately ninety minutes each, going from light sleep to deep REM-sleep (the phase in which we dream). This intelligent app makes the most of this natural rhythm, gently waking you up at the time when your sleep is the lightest. You can set your alarm clock to your ideal wake up time and Sleep Cycle will determine when to go off so you feel like you woke up naturally.