If you are searching for an iStat Menus alternative, this is what to compare first. iStat Menus is a deep toolkit for power users. Better Resource Monitor is the lightweight menu bar monitor for people who just want clean CPU, memory, GPU, and network visibility, all day, with less setup and lower overhead.
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
Who should consider switching
If you open your menu bar monitor mainly for quick signal, not a full control panel, Better Resource Monitor may be the better fit. Use iStat Menus when you need rich fan, thermal, and sensor detail; use Better Resource Monitor when you need a focused daily dashboard, lower resource use, and a faster setup.
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.
Migration with less friction
You can start with Better Resource Monitor while keeping your current workflow intact. Download it from the Mac App Store or GitHub releases, enable the menu bar metrics you need, and compare against Stats and Eul for adjacent alternatives.
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 need a full sensor suite, iStat Menus is likely the better choice. If you want a focused, lighter monitor, use Better Resource Monitor on the Mac App Store, then compare Stats and Eul to confirm your migration path.
Comparison questions
What is Better Resource Monitor?
A free, open-source menu bar app that shows CPU, memory, storage, 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. Storage usage is calculated locally from OS-reported total/free capacity for your main storage volume; no file names, contents, external volumes, or per-volume details are read. 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.