POWERGLASS
HOURS, NOT PERCENT.
PowerGlass turns your Apple Watch battery percentage into a live time-remaining prediction, based on how you actually use your watch. By learning your real-world usage patterns, it shows you exactly how many hours you have left.
Your battery drain isn't constant, and neither is your lifestyle. PowerGlass keeps adapting as your habits change, so its predictions stay accurate as your routine evolves.
Predictions
Time remaining, learned from you
PowerGlass learns your hourly drain pattern across the day and converts your battery percentage into hours remaining — plus a depletion estimate showing the day and time you'll need to charge.
Learning
Two modes, three speeds
Separate models for Standard and Low Power Mode, so switching modes never muddies the data. Choose a learning speed — Steady, Balanced or Responsive — to control how quickly new days are averaged in.
Complications
Your hours, on the watch face
Circular gauge, rectangular with a 24-hour usage graph, corner, inline and a clean compact display. The rectangular complication is fully customisable — pick exactly which metrics it shows.
Make it yours
Full-screen layout editors
Every data field on the app's main pages is editable in a true WYSIWYG editor — remaining hours, life at 100%, average drain, depletion time, learning stats and more.
Achievements
Efficiency, longevity, learning, consistency, engagement and a few just for fun — milestones that reward consistent usage and a well-trained model.
Your data
Everything happens on your watch. No account, no servers, no analytics — your usage patterns never leave your device.
Available on the App Store for Apple Watch.