Press kit
Updated 30 September 2026 · everything on this page may be quoted and reproduced without asking. Who measures this.
Where the product is right now
The trial is downloadable and complete, and buying is open as of 24 August 2026. A key costs $9.99 a year or $29 once, and the first hundred permanent keys go for $19. Anyone you send here can install the app, use it for ten days without a card, and pay from inside it or from the pricing page.
One line
What's draining your Mac right now, and what quitting buys.
Slightly longer: power by app in real watts, the minutes you'd get back by quitting one, and a measured receipt two minutes later.
The facts
| Name | WattMate |
| Platform | macOS 14 or later, Apple silicon only |
| Price | $9.99 a year, or $29 once ($19 for the first 100 keys) |
| Trial | 10 days, no card, from the first time you open the app |
| Licence | Two Macs per key |
| Distribution | Direct download from this site. |
| Privacy | All measurement local. No account, no cloud, no per-app data leaves the machine. |
| Developer | One person, measuring on three Apple silicon Macs |
What it does that others do not
Per-app energy is no longer unusual: Juicy, WhatBattery and Mac 4 Breakfast all list it. Checked against their own pages on 23 August 2026, what we have not found elsewhere is the receipt: naming what quitting an app is worth in minutes before you do it, then re-measuring the Mac afterwards and printing what actually changed, including "the effect couldn't be isolated".
If you are writing a comparison, our reviews of the other apps quote their own pages with dates, and two of our five head-to-heads end by recommending the other product.
What it cannot do
Worth stating in a review, because it will come up:
- No charge limiting. macOS 26.4 caps charging natively on Apple silicon, and a second switch beside Apple's own would be a feature for a feature list.
- No Intel support. The per-process energy counter compiles on Intel and silently returns zero.
- Graphics energy has a total but no owner in macOS, so the split between apps is inferred rather than measured. The app says so on screen.
Screenshots
Free to use in coverage, no permission needed, no attribution required. They are 2× captures between 768 and 1408 pixels wide and come from a real machine rather than a mock-up.
| File | What it shows |
|---|---|
| shot-apps.webp | The menu bar panel: power now, the heaviest apps in watts, and the minutes quitting one saves |
| shot-receipt.webp | The receipt: promised 24 minutes, got 28 after quitting Safari |
| shot-night.webp | A night: 14% lost in sleep, 68 wake-ups, Spotlight named first, and the iPhone that took more than half of it while charging from the sleeping Mac |
| shot-charging.webp | Plugged in but falling: the adapter is 12 W short |
| shot-history.webp | A month of discharges with what each one went to |
Icon: 512 × 512 PNG.
Contact
Write to support@wattmateapp.com. Review copies, a licence for testing, or a specific measurement you want run on our machines: all fine to ask for, and the last one is genuinely interesting to us.
If a number on this site looks wrong, say so and it gets checked. Two claims were corrected on 23 August 2026 because someone checked them against a competitor's own page.
Related: who measures this · how we count, and where it stops · what the app does · the other apps, reviewed