Lark, a system available for the iPod, iPhone and iPad, is a silent un-alarm clock and sleep sensor to wake you up silently. The product comes with a wristband which will vibrate at the time you set even if your devices’ battery has died.
Lark’s patent-pending nudge you awake technology, uses dynamic vibration and works hand-in-hand with its reporting features to give you detailed feedback on how you slept. Lark Pro also comes with the opportunity to attain a 7-day sleep assessment which will help you decipher how you wake up and what are your strongest sleep patterns to bring you a more energetic life with a healthier sleep.
Lark retails for $129 and Lark Pro goes for $189 while the app can be attained for free at the Apple App Store