iStat Menus and Better Resource Monitor are built for different jobs. iStat Menus is a bigger system utility with more sensors, controls, and extra detail. Better Resource Monitor is for the simpler use case: keep CPU, memory, GPU, and network visible from the menu bar, notice unusual load quickly, and keep the monitor itself light enough to ignore. If you are looking for an iStat Menus alternative because you only need the everyday numbers, this page shows where Better Resource Monitor keeps things simpler.
Better Resource Monitor vs iStat Menus for macOS
Feature
Better Resource Monitor
iStat Menus 7
Mac App Store
Full Features
Limited
Admin Password / Privileges
None (Sandboxed)
Requires Root Helper
GPU API Stability
Public API
Proprietary
Memory Footprint
~15 MB
~100+ MB
CPU / Energy Impact
< 0.1%
~1%
App Size
< 7 MB
~65 MB
Privacy / Telemetry
100% Offline
Analytics
Status
Active
Active
Language
Rust
Obj-C / Swift
Price
Free
$14.99
License
MIT
Proprietary
Which one fits better
If you want a full system suite with extra sensors and controls, iStat Menus covers more ground. If you mostly want a clean way to keep an eye on your Mac during the day, Better Resource Monitor is the more focused option. It sticks to CPU, memory, GPU, and network usage instead of trying to become a control panel for everything.
Why Better Resource Monitor stays lighter
Better Resource Monitor uses under 0.1% CPU on Apple Silicon and around 15 MB of memory. That lower overhead comes from keeping the feature set tighter and skipping the always-on sensor polling that heavier monitoring apps rely on. It is built to stay open all day without feeling like one more thing your Mac has to carry.
Easy to install, easy to trust
Better Resource Monitor installs like a normal Mac app and is available on the Mac App Store with full features. No admin-password step, no root helper, no private APIs. Most people will not choose an app because of those details alone, but they do make the experience simpler and easier to trust.
Privacy
Better Resource Monitor makes zero network requests. No analytics, no telemetry. Everything stays on your machine. If you want a monitor that quietly does its job and keeps to itself, that part is straightforward. If you want more sensors and controls, iStat Menus is still the bigger tool. If you want the smaller menu bar monitor, Better Resource Monitor is free on the Mac App Store and the source is on GitHub.
Comparison questions
What is Better Resource Monitor?
A free, open-source menu bar app that shows CPU, memory, GPU, and network usage on macOS. Written in Rust. Under 0.1% CPU and about 15 MB of RAM.
How much CPU and memory does it use?
Under 0.1% CPU and about 15 MB of RAM on an Apple M1. For comparison, Stats uses ~50 MB and iStat Menus uses 100+ MB. The app binary is under 7 MB.
How does GPU monitoring work?
On macOS, it reads device utilization from Apple Silicon GPUs through Apple's public IOAccelerator API. That keeps GPU monitoring available in both the App Store and GitHub versions without relying on private APIs or sudo.
Does it collect any data?
No. Zero network requests, no analytics, no telemetry. Everything stays on your machine. The source code is on GitHub if you want to verify that yourself.
Does it drain MacBook battery?
No. Monitors that poll fans and thermal sensors keep Apple Silicon from entering deep sleep. This app skips those readings entirely, which is why it sits under 0.1% CPU.
Is Better Resource Monitor an iStat Menus replacement?
It can replace iStat Menus if your main goal is a lighter menu bar monitor. If you need a feature-rich dashboard with lots of sensors and controls, iStat Menus is usually the better fit.
Why choose Better Resource Monitor instead of iStat Menus?
Choose Better Resource Monitor if you care most about low overhead, free pricing, open source code, and Mac App Store availability.