Battery Log: Health & Cycles

Keep a real record of your iPhone battery health and watch how your capacity holds up over months of charging. BatteryLog turns the numbers hidden in Settings into a clear history you can actually read.

Most people check Battery Health once, see a percentage, and forget it. BatteryLog is the log book instead: jot down your health percentage and cycle count whenever you like, tag how you charged, and let the app draw the trend line. Over time you get a picture no single screenshot can give you — how fast your battery is really aging, and roughly when a replacement will pay off.

WHAT YOU GET

• A running history of every charge session with health %, cycle count and charge added
• Trend charts that plot health, cycles and charge added so decline is obvious at a glance
• A degradation read-out that estimates the headroom left before your battery hits replacement territory
• Charge tagging for cable, wireless and MagSafe so you can compare how each affects wear
• Battery-care guidance drawn from Apple and Battery University on heat, the 20–80% band and cycles
• CSV export of every reading to back up or crunch the numbers in a spreadsheet

PERFECT FOR

• Owners of an older iPhone deciding whether it is finally time for a battery swap
• People who baby their battery and want proof their habits are working
• Anyone reselling a phone who needs a documented health history
• Data lovers who would rather track a trend than trust a single number

WHY NOT JUST CHECK SETTINGS? Settings shows you one number, today. It never remembers last month, never draws a line, and never tells you how quickly things are sliding. BatteryLog keeps every reading so you see the slope, not just a dot — the difference between guessing and knowing.

PRIVACY Your charge history lives on your device. No account, no ads, no tracking, and nothing leaves your phone unless you choose to export it.

FULL ACCESS Logging your first readings, viewing the trend and reading the care guide are free. A subscription unlocks unlimited charge history beyond the free entries, the full trend charts and CSV export:

• Weekly plan
• Yearly plan
• Lifetime — pay once, keep forever Payment is charged to your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends; manage or cancel anytime in your App Store account settings.

Start your battery's history today — log one reading and watch the trend build.

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