Why use WattSeal?
Most people have no idea how much electricity their computer actually uses, or which apps are silently draining power in the background.
WattSeal gives you that visibility:
- ⚡ Live power draw, updated every second
- 🧩 Per-component breakdown: CPU, GPU, RAM, storage, network
- 📋 Per-app breakdown: catch the process quietly draining your battery
- 📈 History: charts from the last minute to the last year
- 🔒 100% local: all your data stays on your machine, private
- 🏠 MQTT + Home Assistant ready, for anyone who wants it in their smart home dashboard
- 🌍 Carbon & cost estimates based on your grid and electricity price
- 🪶 Single executable, no installer, no runtime to manage
Quick start
WattSeal is a single executable. No installer, no dependencies to manage.
Download the executable for your OS below and run it:
Admin/root is optional everywhere. Without it, WattSeal still runs fully, CPU power just falls back to a usage-based estimate instead of a direct hardware reading.
Step by step instructions
Detailed instructions for each platform are below.
🪟 Windows
- Download and double-click
WattSeal-windows.exe.
- If SmartScreen warns you, click More info → Run anyway. This is normal as we did not pay Microsoft to notarize the app.
- If prompted by User Account Control (UAC) to install the CPU MSR driver, click “Yes” to install it (this is a one-time step). If you click “No”, WattSeal will still run but CPU power readings will be estimated.
The dashboard opens in a window and a tray icon is added. Closing the window keeps WattSeal running in the tray, reopen it from there.
🐧 Linux
Open a terminal in the folder where you downloaded WattSeal and run:
chmod +x WattSeal-linux
sudo ./WattSeal-linux
Root is needed to read /sys/class/powercap for CPU energy. Tray icon requires libappindicator or libayatana-appindicator; without either, WattSeal just runs without one.
🍎 macOS
Open a terminal in the folder where you downloaded WattSeal and run:
chmod +x WattSeal-macos
./WattSeal-macos
If macOS blocks the app because “Apple could not verify if it’s free of malware”, go to System Settings → Privacy & Security and allow WattSeal to run.
It is normal as we did not pay Apple to notarize the app.
Documentation
Quick reference, everything deeper lives in the Wiki:
Contributing
Issues and PRs are welcome, small or large. See CONTRIBUTING.md to get started and ROADMAP.md for what’s planned.
To translate WattSeal into your native language, see 🌏 App translations.
The following languages are currently supported:
License
WattSeal is licensed under GPL-3.0.
If WattSeal is useful to you, a ⭐ helps other people find it.
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