Every system metric in your menu bar, for less than it measures
CPU with performance and efficiency cores, GPU, memory pressure, network, disk, temperatures, watts and battery, drawn natively in the menu bar. Stat Space idles under 0.3% CPU and about 21 MB, and shows you its own cost to prove it.
Your menu bar, styled your way.
One status item per module, each drawn as text, a mini readout, a line or bar chart, a ring, a meter, a pie, a speed readout, a stack or a tachometer. Start from one of twelve looks, then change anything.
- Twelve looks. Classic, Accent, Traffic light, Pill, Terminal, Icons, Neon, Sunset, Badge, Mint, Blueprint and Bold, one tap each. See them all.
- Every detail. Font design, size and weight; match the menu bar, your accent, any colour, a two-colour gradient, or green → red by load; soft, outline or cut-out badge backgrounds with square to capsule corners; SF Symbol icons; chart width, fill and line weight; colour and label overrides per item.
- Share a look. Copy a statspace://look link and post it. Anyone with Stat Space can open it.
- Global shortcuts. Open the popover, or jump straight to a tab, from any app. No Accessibility permission needed.
- Back it up. Export every preference to a file and import it on your next Mac.
TextMiniLine chartBar chartChart + valuePieRingMeterSpeedStackTachometer
Apple Silicon, in detail
Total and per-core CPU split into P and E clusters with their clocks, GPU use and clock, and power in watts for CPU, GPU and Neural Engine.
Memory, honestly
Pressure (the number that matters), app, wired and compressed memory, swap, page-ins and page-outs, and the top processes.
Sensors and battery
Temperatures, voltages and fan speeds, a thermal pill that says Cool, Warm, Hot or throttling, and battery level, health, cycles, charging power and time left, which can also sit in the menu bar.
Styled your way
Text, mini, line or bar chart, ring, meter, pie, per-core bars, speed, stack or tachometer. Twelve looks to start from, then every colour, font and background is yours.
Desktop widgets and alerts
WidgetKit widgets for CPU, memory, network and ports, plus notifications when CPU, memory, disk, battery or temperature stay past a line.
Network toolkit
Live up and down speed, local and public IP, Wi-Fi link details, a speed test, ping, traceroute, DNS lookup and a captive-portal check.
Built to cost almost nothing
A system monitor that uses 3% CPU to tell you your CPU is at 4% has missed the point. Stat Space has one timer driving pull-based samplers that write into a single snapshot, overwritten in place. A sampler runs only if something on screen needs it: a menu bar item, an open tab or a pinned Home card. An idle benchmark checks every release against a budget of 0.3% CPU and 25 MB on an M1. The self-cost overlay shows the live number in the popover.
Your menu bar, your rules
Each module is its own status item, so you can show only CPU and memory, or everything. Pick one of twelve looks (Classic, Accent, Traffic light, Pill, Terminal, Icons, Neon, Sunset, Badge, Mint, Blueprint, Bold), then change font design, size and weight, colour (match the menu bar, accent, any colour, a gradient, or green to red by load), badge backgrounds and chart weight per item. Share a look as a statspace://look link.
Readings that mean something
Numbers alone don’t say whether to act. The System tab adds plain verdicts: a thermal pill (Cool, Warm, Hot, throttling), a hot-Mac notice, and “Restart recommended” after 30 days up, or after 7 with heavy swap or memory pressure. Battery health is shown as capacity in mAh against design, not just a percentage.
The popover
Clicking an item opens the popover on the matching tab: a pinnable Home, then System, Network, Disk, Battery and Devices, alongside the developer tabs. Global shortcuts open it or jump to any tab from any app, with no Accessibility permission. Desktop widgets are off by default, because every widget refresh wakes macOS’s widget daemon; turn them on in Settings › Widgets and Stat Space writes one small snapshot a minute for them.
Questions
Is it really free?
Yes. Every system metric, the menu bar styles, desktop widgets, alerts and 30 days of history are free forever, with no account. Pro is a one-time purchase for extras like network by app and Trends.
Does it work on Intel Macs?
No. Stat Space is an arm64-only app for M1 and later on macOS 14 Sonoma or newer, because its power, sensor and core-cluster readings are Apple Silicon specific.
How does it stay so light?
Menu bar items are drawn with Core Graphics, not SwiftUI, and redraw only when the value changes. Samplers run only for what’s visible, and the popover’s interface is built when you open it and torn down when you close it.
Can I combine several readings into one item?
Yes. The combined item draws several parts, such as per-core CPU, a memory ring and a network graph, side by side in one status item, which saves room next to the notch.
Know what your Mac is doing, without adding to it.
Free, no account. Pro is $9.99 once for the first 100 buyers.