What changed

Updated 31 August 2026 · the current version is 1.1. These are the same notes the app shows in its update window — one source, so the two cannot say different things about the same release.

1.1 31 August 2026

  • The night shows how the charge went, hour by hour, and marks when the cable was in.
  • It names what was charging from your Mac while it slept.
  • Quitting an app updates the screen at once.
  • Charging has its own page: how fast the charge came back, what the adapter delivered, and whether the Mac slept through part of it.
  • History is rebuilt around the journal, and every row opens, charges included.
  • A run that cost more than your usual is marked.
  • Period totals name the day that cost the most and can be set against the period before.
  • "How WattMate measures" is now inside the app.
  • The "Now" screen is gone.
  • Light and dark can be pinned.
  • Windows redraw only when something changed, and percentages stopped jittering.

1.0.2 24 August 2026

  • Buying works. The Buy button pointed at test products, so the checkout it opened could never take money; it now opens the real one.
  • A permanent key is recognised as permanent. With the old identifiers a lifetime licence introduced itself as a subscription and would have locked itself a year later.
  • The launch price applies on its own — $19 for the first hundred permanent keys, with no code to type.
  • The card above the app list stops suggesting you quit everything. It names the ceiling instead: with all apps closed, this is what the charge gains — usually a reminder that the apps were never the problem.
  • The list of wireless devices has left the discharge screen. A mouse costs your Mac nothing and cannot be quit, so it answered a question that screen never asks. It stays where the charge of a mouse is the whole point: on a Mac with no battery of its own.

1.0 12 August 2026

  • WattMate shows the power every app on your Mac is using, in watts, and how much longer the charge lasts without it.
  • Two minutes after you quit something, it measures the Mac again and prints what actually changed — or says plainly that the effect could not be isolated.
  • It reads the macOS power log to name what woke the Mac while you slept.
  • Requires an Apple silicon Mac and macOS 14 or later.