PowerGlass

Apple Watch battery percentage tells you how much charge you have, not how long it will last. PowerGlass fixes that.

PowerGlass turns your 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 — whether that's 4 hours or 40.

Your battery drain isn't constant, and neither is your lifestyle. PowerGlass continuously adapts as your habits change, keeping its predictions accurate as your routine evolves.

Key Features
• Personalised time-remaining predictions driven by your hourly usage patterns
• Dual-mode learning with separate models for Standard and Low Power Mode
• Multiple complications: circular gauge, rectangular with usage graph, corner, inline and compact
• Depletion time estimate — see the day and time you'll need to charge
• Achievements that reward consistent usage and learning milestones
• Customisable rectangular complication — choose which metrics to display
• 24-hour usage graph showing your drain pattern across the day
• Power-user tools: inspect data, track learning progress, and adjust learning speed

The more you use it, the smarter it gets — giving you confidence in every charge.

Note: In Low Power Mode, Apple Watch restricts background app refresh. To maintain learning accuracy, open the app periodically while in this mode.