Gear4 has announced that it will soon launch its Renew SleepClock system for the iPhone, iPad, and iPod in the United States. Sporting a top-mounted dock, the SleepClock uses an advanced no-contact sensor to sense the users’ breathing rate, when they’re in light or deep sleep, if they leave their bed at night, and when they’re trying to go to sleep—adjusting their sleep soundtrack appropriately in the latter case, and waking…