Menu-bar app for Mac notebooks · macOS 14 or later

Your Mac battery, read properly.

Amp shows charge, battery health, power draw and up to 90 days of history from the menu bar. When something changes, it tells you what and by how much. Every reading stays on your Mac.

Coming to the Mac App Store See what it records

One purchase. No subscription, no account.

One reading from the Mac Amp was built on, November 2026.

Charge: 100%Fully charged
Health: 89%of design capacity
Cycles: 362of 1,000 rated
Draw: 21.5 Wwhole Mac, on adapter
Battery: 90.1°Fcell temperature

History

Ninety days, one sample a minute.

While it runs, Amp logs charge, system power, adapter output and battery temperature once a minute. Pick a window from one hour to thirty days and Amp compares it with the window before.

Charge, power and temperature charts
Each time on battery longer than 10 minutes, with its average draw
Energy drawn from and put back into the battery
CSV export of the full log

Amp's dashboard window. Four tiles read charge 100%, health 89%, draw 21.5 watts and temperature 90.1°F. Below them, a 24-hour comparison, a Battery Detective finding, and charts of charge level and power draw across two days.

Battery DetectiveA real finding, word for word.

“The last 10 minutes averaged 26.2 W versus 12.5 W during the prior hour. Battery temperature rose 5 °C at the same time.”

Battery Detective compares the last ten minutes with your own previous hour. It works from fixed rules and your readings, so every finding comes with the numbers behind it.

Battery Care

Advice that matches what the battery is doing.

Amp tracks how long the battery sits above 95%, how often it drops below 10%, and how much time it spends above 40 °C. Then it suggests one next step.

Charge limits and power modes stay in macOS. When a change belongs there, Amp opens the right settings page.

Amp's Battery Care pane: cell temperature 90.3°F, marked cool; a note that charge limits and power modes stay under macOS control with a button to open Battery Settings; and eight short tips on keeping a battery healthy.

Widgets

On the desktop, too.

A small widget for charge and state. A medium one adds battery health and cycle count. Both read the battery directly and refresh on their own.

Medium Amp widget: fully charged, 100%, health 89%, 362 cycles.

Privacy

Your battery history never leaves your Mac.

Amp has no servers to send it to. Export the log or delete it from Settings whenever you like. Read the privacy policy.

AccountNone
Analytics and trackingNone
AdvertisingNone
Data uploadedNone
History kept on your MacUp to 90 days

Questions

Which Macs does Amp work on?

Mac notebooks running macOS 14 or later. The app runs natively on every Mac that can run macOS 14. On a desktop Mac there is no internal battery to read, but Amp can still show compatible Bluetooth device levels.

Does Amp upload my battery data?

No. Amp has no account and no analytics. History is stored in Amp's own folder on your Mac, kept for up to 90 days, and can be exported as CSV or deleted from Settings.

Is it a subscription?

No. Amp is a one-time purchase on the Mac App Store. Updates come through the App Store.

Can Amp change my charge limit or power mode?

No. Those settings belong to macOS and Amp does not ask for administrator access. Amp shows when a change would help and opens the right page in System Settings.

Which Bluetooth devices show a battery level?

Devices that publish the standard Bluetooth battery service to your Mac. Bluetooth is optional and off until you turn it on in Settings.

When can I buy it?

Amp is being prepared for Mac App Store review. This page will link to the store as soon as it is approved.

Buy it once. Keep the whole app.

No feature tiers, no monthly fee, no account.

Coming to the Mac App Store