Android: Sleep Bot is a personal metric tool for tracking and analysing your sleep patterns. Whether you're keeping a detailed log for your doctor or just trying to get a handle on your exhaustion, Sleep Bot will keep track of the details.
Sleep Bot is a full app paired with a simple widget to make "clocking" in and out of your sleep routine easy. If you do nothing but use the widget to mark when you fall asleep and wake up, Sleep Bot tracker can compile a basic sleep record for you. In additional to simply recording the times, you can annotate the sleep record with notes and export a detailed sleep history for backup or to share with your healthcare provider.
Sleep Bot is a free application, Android only. You can download it by searching for "Sleep Bot" in the Android Market.
Sleep Bot Tracker Log [AppBrain]