Dotwatt shows how long your MacBook will last and which apps drain it, holds the charge at 80% and switches Low Power Mode in one click. One payment, $2.99.
For Apple silicon Macs on macOS 14 or later. No account, no telemetry.
Click the dot in the menu bar. Now holds the time left, Low Power Mode and the three apps using the most energy. Stats holds battery health and 30 days of history.
You're good until 7:38
Plenty of time remains at the current pace
left on battery
Off · on battery
TOP APPS
Close it, or at least its heavy tabs
If you quit: 5h 40m → ≈6h 22m (≈+42m)
Quit it when you're done with it
If you quit: 5h 40m → ≈6h 05m (≈+25m)
Barely matters: quitting changes little
If you quit: 5h 40m → ≈5h 47m (≈+7m)
Gains are rough estimates from each app's share, not a forecast.
BATTERY
Stops charging at this level. macOS still tops up to 100% now and then to keep its readings accurate.
Share of the energy measured today
Google Chrome 27% 
Xcode 14% Figma 9% 
Zoom 6% Slack 3% Apps are ranked by energy use, each with a rough estimate of the time you get back by quitting it.
TOP APPS
Close it, or at least its heavy tabs
If you quit: 5h 40m → ≈6h 22m (≈+42m)
Quit it when you're done with it
If you quit: 5h 40m → ≈6h 05m (≈+25m)
Barely matters: quitting changes little
If you quit: 5h 40m → ≈5h 47m (≈+7m)
Gains are rough estimates from each app's share, not a forecast.
Set a limit from 80 to 100% with the charging control built into macOS 26.4 and later.
Stops charging at this level. macOS still tops up to 100% now and then to keep its readings accurate.
Share of the energy measured today
Google Chrome 27% Xcode 14% Figma 9% Zoom 6% Slack 3% Code works out the numbers. Apple Intelligence only words them, on your Mac, never in the cloud.
You're good until 7:38
Plenty of time remains at the current pace
left on battery
Off · on battery
TOP APPS
Close it, or at least its heavy tabs
If you quit: 5h 40m → ≈6h 22m (≈+42m)
Quit it when you're done with it
If you quit: 5h 40m → ≈6h 05m (≈+25m)
Barely matters: quitting changes little
If you quit: 5h 40m → ≈5h 47m (≈+7m)
Gains are rough estimates from each app's share, not a forecast.
Thirteen charging tips, each showing what is known and what is not. No promised gains without proof.
Limited offer for early users. One payment, no subscription.
$2.99once
$4.99once
Opens when the first 10 keys are sold
$7.99once
The regular price after 40 keys
Use it on up to three Macs of your own.
It arrives minutes after payment and is checked offline.
Write to support and the payment is returned.
A signed, notarized app of half a megabyte. Drag it to Applications and open it.
Pay once through Paddle. The license key is in your inbox a few minutes later.
DOTWATT-ZG90d2F0dHwxfHR4bl8wMWo…To activate: open Dotwatt from the menu bar, press Paste, then Activate.Dotwatt checks the key on your Mac and opens the panel. No sign-in.
No. Instead, every purchase can be refunded within 7 days.
Macs with Apple silicon on macOS 14 or later. Intel Macs are not supported.
No. There is no account and no telemetry. History stays in a file on your Mac, and the license key is checked offline.
Dotwatt uses the charging control built into macOS, which arrived in 26.4. It switches the limit on only on macOS versions we have tested.
Once, to install the helper that switches Low Power Mode.
On up to three Macs of your own. A lost key is sent again from the lost key page.