The app was lacking many features which are now supported in v 2.0.1 Battery drainage is no longer an issue and sleep analysis data is saved appropriately to the health app.
The new features like push notifications, AirPlay videos and stay sleep session on the iPhone are really awesome! Wearing AW while using the app on iPhone instead of AW is also a great option to conserve battery life to about 95%!
In app support for tips to stay awake or sleep are some added bonus to improving my overall sleep experience!
In all, it just does as promised! Thumbs up to the developer for meeting our expectations!
Jennefier0083 about SleepIsle, v2.0.1