Everything Dotwatt does

See what the battery is doing

• Time left, measured. Dotwatt reads the battery every five seconds. A first estimate of the time left arrives about 15 seconds after you unplug and settles within two minutes. It can sit next to the percentage in the menu bar.
• The apps spending the charge. Each app's share of the energy, for now, for today and for seven days.
• What quitting an app gave. Quit an app from the list and Dotwatt measures the draw again, then shows the watts before and after and the time gained.
• Power in watts. What the Mac uses, what comes from the charger and what goes into the battery.

Control the charge

• Charge limit. Stop charging at 80 to 100%, in steps of five. It uses the charging control built into macOS, so it needs macOS 26.4 or later.
• Full once. One tap charges to 100% this one time. The limit is back when the charge is done or the Mac is unplugged.
• Full by a set time. Choose a time, once or every day. Dotwatt lifts the limit early enough for the battery to be at 100% by then. If the Mac goes to sleep on the charger within twelve hours of that time, the charge starts at that moment, because no app can act while the Mac sleeps.

Energy modes

• Low, Auto and High Power in one click. High Power shows on the Macs that have it.
• Low Power by itself. Pick a level from 10 to 50% and Low Power comes on below it on battery, then off again once the battery is charged above it.
• Both need Dotwatt's helper, which asks for an administrator password once. Everything else works without it.

Keep the Mac awake

• Four ways. Until you stop it, for a time from 15 minutes to 8 hours, while a chosen app is running, or only while coding agents are working.
• Coding agents. Dotwatt recognises Claude Code, Codex, Cursor, Gemini, Copilot, OpenCode, DeepSeek, Antigravity, Qwen Code, Goose, Aider, Kimi, Grok. The Mac sleeps five quiet minutes after the last one stops. More about agents.
• It knows when to stop. On battery it lets go at a level you choose, from 10 to 50%, or as soon as the Mac leaves wall power if you prefer.
• Lid closed. A session can keep the Mac awake with the lid shut. This is not an official macOS feature: it works only while the session is on and stops when the Mac runs hot.

Alerts

• Plug in at 10, 20 or 30%, and unplug at 80, 90 or 100%.
• Under 30 minutes left, charged to the limit, and an app that drains unusually fast.

The record

• Nights. Every stretch asleep with the charge it took, how often the Mac woke and for what.
• Battery health. Capacity and cycles recorded once a day and shown month by month, kept for three years.
• Battery report. One file with the capacity, the cycles and the recorded history, for a buyer of the Mac or for a repair.
• Load, heat and fans. Processor load, temperatures and fan speed from the Mac's own sensors.
• One tip, when it applies. What to do, what it gives and why, with its source.

Automation

• Eight actions for the Shortcuts app, dotwatt:// links for Raycast and scripts, and two keyboard shortcuts that work from any app. How to automate Dotwatt.

The app itself

• Native. Written in Swift on the system's own APIs, for Apple silicon. It lives in the menu bar and can open at login.
• Private. No account and no telemetry. History stays in files on your Mac. What the app sends.
• Updates itself. A new version downloads in the panel and installs with one button.
• Free for 7 days, then one payment. A key works on up to three of your Macs, and a purchase can be refunded within 7 days. Pricing.

What it does not do

Dotwatt does not run on Intel Macs or on macOS 13 and earlier, does not limit the charge below 80% or on macOS before 26.4, and does not read the battery of an iPhone or iPad. How it compares with other apps.