Keep an eye on your Mac from your iPhone

Maybe you’ve got a Mac mini running 24/7 at home as a server, or a MacBook Pro doing a long render at the office, or just a desktop Mac you’ve stepped away from for the afternoon. Knowing whether it’s still alive, what it’s doing, and whether the fans are pinned — without walking back to it — is a surprisingly useful capability.

Options for remote monitoring

Screen Sharing / VNC

The lowest-effort path: turn on Screen Sharing in System Settings > General > Sharing, then connect from another Mac via the Finder’s Go > Connect to Server menu with vnc://your-mac.local.

From an iPhone, you’d need a VNC client like Jump Desktop or RealVNC Viewer. Works fine, but it’s the whole desktop; you’re effectively logging in remotely just to look at Activity Monitor.

SSH plus top

If you can SSH into the Mac:

ssh you@your-mac.local “top -l 1 -n 5 -o cpu -stats command,cpu,mem”

That returns one snapshot. Loop it for live monitoring. Lightweight, no GUI required, works from any iOS SSH client (Termius, Blink, etc.). Best for “is the build still running” kind of questions.

Apple’s own Find My + Battery widget

For “is the Mac alive and roughly where” — Find My shows online/offline status. Battery widgets on iOS (via Continuity) show MacBook battery levels. Both are too coarse for actually monitoring activity but useful as a sanity check.

Beacon (menubar + widget)

Beacon’s menubar status is the Mac-side piece, but the data is also surfaced for quick checks on the Mac itself when you walk past. If you genuinely want phone-side monitoring, a remote-access combo is still the answer — Beacon + Screen Sharing means a single VNC tap shows the menubar with all your stats already laid out.

A useful setup:

1. On the target Mac, install Beacon and add CPU, Memory, Network, and Temperature to the menubar.
2. Enable Screen Sharing in System Settings > General > Sharing on that Mac.
3. On your iPhone, install Jump Desktop (or your VNC client of choice) and add the Mac.
4. From anywhere on your network — or via Tailscale/your VPN remotely — connect, and the menubar gives you an at-a-glance read without poking at Activity Monitor.

Worth knowing

• macOS will sleep an idle Mac and disconnect Wi-Fi unless you change Energy Saver settings. For an always-on Mac, set Prevent automatic sleeping when plugged in.
• A Mac mini used as a server is the easiest target — wired Ethernet and “wake for network access” make it reliable.
• For laptops, expect the connection to drop when the lid closes; you’ll want to either keep the lid open or set it up as a “clamshell” server with an external display unplugged.
• Tailscale (free for personal use) is the easiest way to reach a home Mac from anywhere without opening ports.