Know what your PC costs to run

Real-time power monitoring with live £/hr display. Free forever. Pro unlocks the full toolkit.

LIVE 14:32:07 Dashboard

GPU 178W · CPU 81W

Cost per hour

£0.075

Standing: £0.64/day

Power breakdown

CPU 81W · GPU 178W · Other 68W

£0.42Today

--Yesterday

--This Week

--Month est.

--Year est.

Pro Unlock week/month/year estimates + optimization engine

Start Free Trial →

Everything you need

Free forever with optional Pro upgrade

⚡

Live Power Gauge

See real-time CPU + GPU wattage at a glance.

Free

Cost Per Hour

Know exactly what you're spending right now.

Free

📊

Power Breakdown

CPU vs GPU vs system draw in a live bar.

Free

📈

24h History

Sparkline trend + CSV export of your data.

Free

✨

Optimization Engine

AI-powered suggestions to lower your bill.

Pro

🔍

Advanced Analytics

7d/30d history, idle waste detection, week/month/year estimates.

Pro

How it works

Download & Install

.msi, .exe, or setup. Runs on Windows 10+.

Run as Admin

One-click UAC prompt. Required to read hardware sensors.

See Your £/hr

Live cost, history, and optimization tips appear instantly.

Simple pricing

One payment. No subscriptions. No ads.

Free

£0

Forever free. No trial expiry.

✓ Live power gauge
✓ Cost per hour
✓ Power breakdown
✓ 24h sparkline
✓ CSV export
✓ Basic settings

Download Free

Pro

Get WattWise

Windows 10+ · .NET 8 runtime · Admin rights required

Download .msi Portable .exe

Also available: setup.exe