mAhgic

How much battery is left in your battery?

Batteries get tired. mAhgic shows you exactly how tired – for your Mac, and for your iPhone and iPad too. Free, tiny, and nothing leaves your Mac.

82% MacBook Air
after 2 years
The mAhgic window: a MacBook Air at 63 % charge and 82 % battery health, with tiles for capacity, cycles, temperature and power adapter.
Fits in a tiny window

Everything about your battery. In one small window.

Percent tells you how full the battery is right now. mAhgic tells you how big it still is.

Real battery health

See how much your battery can still hold compared to the day it was new.

iPhone & iPad, no cable

Your iPhone and iPad show up by themselves when they're on the same Wi‑Fi as your Mac.

Charge cycles

How often the battery has been charged all the way, and how many cycles it's made for.

Charging right now

Watts going in or out, time until full or empty, the power adapter and the temperature.

Watch it get older

mAhgic keeps a diary of every battery, month by month. Bring your coconutBattery history along.

Stays on your Mac

No account, no cloud, no tracking. Everything is saved on your Mac only.

Batteries don't die. They shrink.

Here's one MacBook Air, measured with mAhgic over two years:

101%June 2024
brand new
97%Oct 2024
20 cycles
94%Aug 2025
80 cycles
87%May 2026
250 cycles
82%Sept 2026
326 cycles

Below 80% Apple recommends a battery service. mAhgic shows you when you're getting close – long before your Mac starts dying at lunchtime.

Stats view with charge and health rings and eight tiles.

Right now

Charge, health, cycles, temperature and power at a glance.

History view with a health chart falling from 101 % to 82 % and monthly averages.

Over time

A chart and a list for every month, so you see the trend.

Check your iPhone without a cable.

Set it up once. After that your iPhone and iPad just appear in mAhgic.

1

Plug in once

Connect the iPhone by cable and tap “Trust this Computer”.

2

Turn on Wi‑Fi

In Finder, click the iPhone and turn on “Show this iPhone when on Wi‑Fi”.

3

Done

Whenever both are on the same Wi‑Fi, mAhgic shows the iPhone's battery.

Our iPhone 16 Pro showed up in 0.3 seconds – at 103% health. New batteries often start a bit above 100%.

Quick answers

My Mac says it can't open the app.

mAhgic isn't checked by Apple yet. Try opening it once, then go to System Settings → Privacy & Security and click “Open Anyway”. You only do this once.

Which Macs does it run on?

Macs with Apple silicon (M1 and newer) and macOS 14 Sonoma or later.

My iPhone doesn't show up.

Make sure you did the three steps above and both devices are on the same Wi‑Fi. Unlocking the iPhone helps it wake up.

Does it change anything?

No. mAhgic only looks. It never changes settings on your Mac, iPhone or iPad.

Running low? Recharge.

Download mAhgic, unzip it and drag it into your Applications folder.

⚡ Download mAhgic

Free · Version 1.0 · 0.9 MB · macOS 14+ · Apple silicon

mAhgic is free. Coffee keeps it charged.

If mAhgic told you something useful about your battery, you can say thanks with a coffee.

Buy me a coffee