Guardians of the Battery

Your iPhone says 40 %. But 40 % of what? On a quiet morning at home that lasts all day. At the start of a long trip it might not get you home. Guardians of the Battery turns the percentage into the number you actually need: how long it will last. TIME, NOT PERCENT • Time remaining, worked out from how fast your battery really drains • Live drain rate in % per hour, measured between real percent steps so it doesn't jump around • Level, charging status, drain and forecast on one screen, with a detail view behind every card A FORECAST THAT LEARNS YOUR DAY A battery app only sees the battery while you're looking at it, which is when the screen is on and drawing the most power. So Guardians learns your usual drain from the stretches between your visits: phone in your pocket, screen off, other apps, calls. Once it has a couple of hours of those, every forecast uses your real-world rate instead of the worst case. The detail view shows both numbers and says which one it's using. ON YOUR HOME AND LOCK SCREEN Small and medium Home Screen widgets, plus circular, rectangular and inline Lock Screen widgets, show your level at a glance. With Pro they also show when you'll reach your low-battery threshold. A HEADS-UP WHEN YOU'RE LOW Pick your own threshold and get an alert when the battery drops below it. iOS lets an app check only while it's open and during occasional background refreshes, so an alert can arrive late. For a forecast you can always see, add the widget. HISTORY AND INSIGHTS • Battery level charts for the last hour, 6 hours, 24 hours and 7 days • Today's range and 24-hour trends in every detail view • Insights: unusual drain, your heaviest hours of the week, how you charge, your weekly trend and when you're likely to run low • Keep readings for 7, 14, 30 or 90 days, and clear them whenever you like GUARDIANS PRO The live numbers, the forecast, the last hour of history, the widgets and low-battery alerts are free. Pro adds: • The forecast in your widgets • Full history: 6 hours, 24 hours and 7 days • 24-hour trends in every detail view • Battery Insights Start a 14-day free trial, free via the App Store, no credit card required. After that, Lifetime Access is one purchase: pay once, all future Pro features included forever. No subscription. PRIVATE BY DESIGN Every reading stays on your device. No account, no analytics, no tracking, no servers. WHAT IT ISN'T Guardians doesn't extend your battery life, switch on power-saving modes or close apps. It's a dashboard, not a tuner: it tells you what your battery is doing so you can decide what to do about it. iOS doesn't share per-app battery use with apps; you'll find that in Settings › Battery.