System stats, at a glance.

A live system vitals monitor for Mac.

teenystat lives in your menu bar and shows CPU, memory, and fan speed in real time. Color-coded thresholds, rolling sparklines, and per-core CPU breakdown. 3-day free trial, then $4.99 once.

Know your Mac's state at a glance.

Color-coded thresholds tell you instantly whether things are cool, warm, or running hot.

Normal
All clear
Everything is within normal range. Your Mac is happy.
Warning
Heads up
A metric crossed its threshold. Worth keeping an eye on.
Critical
Take action
Sustained high values. Check for runaway processes.

Three metrics. One menu bar icon.

Pick which metric shows in the menu bar. Click to open the full dashboard with all three.

Fan Speed

Current RPM for every fan with min/max range. Automatically hidden on fanless Macs like MacBook Air.

Memory Pressure

Used vs. total RAM as a percentage, plus a detailed breakdown of active, wired, and compressed memory.

CPU Usage

Total load plus per-core mini bar chart. Spot which cores are working hardest.

60-point sparklines for every metric.

teenystat keeps a rolling 60-point history for each vital, covering the last 3 minutes at the default interval. Watch trends develop in real time without opening Activity Monitor or installing heavyweight system tools.

Memory 70%
CPU 42%
Fan 2400 RPM

Memory breakdown, not just a percentage.

See your used vs. total RAM at a glance, then drill into the details: active, wired, and compressed memory, each shown in GB. Know exactly where your memory is going.

Memory Usage
11.2 / 16.0 GB (70%)
H: 78% L: 52%
Active: 7.4G Wired: 2.8G Compressed: 1.0G

See every core at work.

The per-core CPU view shows a mini bar chart of each core's load. Instantly spot when a single core is pegged at 100% while the rest idle. The telltale sign of a misbehaving process.

CPU Usage · Per-Core
Core 1 Core 10
Normal Warning Critical

Threshold alerts with smart cooldown.

Set custom thresholds for any metric. teenystat sends a native macOS notification when a value crosses into the red zone, with a 10-minute cooldown so you're informed, not spammed.

teenystat now
CPU usage hit 92%
Sustained load above your critical threshold. Check Activity Monitor for runaway processes.
Download App Purchase License: $4.99

The full dashboard, one click away.

Click the menu bar icon (or use your custom global hotkey) to reveal all your vitals with session highs, lows, and live charts.

teenystat
Memory Usage
11.2 / 16.0 GB (70%)
H: 78% L: 52%
Active: 7.4G Wired: 2.8G Compressed: 1.0G
CPU Usage
42.3%
H: 87% L: 4%
Per-Core
Fan Speed
2400 RPM
H: 3200 RPM L: 1800 RPM
Range: 1800 - 3200 RPM

Lightweight power. Zero bloat.

Everything you need to monitor your Mac, nothing you don't.

📊

Session High & Low

Track the highest and lowest value for each metric since the app launched. Reset anytime with one click.

Adjustable Update Interval

Refresh every 1, 3, 5, or 10 seconds. Balance detail against energy usage.

🔔

Threshold Alerts

Native macOS notifications when metrics cross into the red zone. 10-minute cooldown prevents spam.

💻

Apple Silicon & Intel

Works on M1, M2, M3, M4 and Intel Macs. Sensors detected automatically.

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Launch at Login

Starts with your Mac so your system vitals are always one glance away.

Menu Bar Native

Built with Swift and SwiftUI, zero third-party dependencies. No dock icon, no windows, no clutter.

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Completely Private

All data stays on your Mac. No analytics, no telemetry, no cloud sync.

🎯

Selectable Menu Bar Metric

Choose which vital shows in the menu bar: memory, CPU, or fan speed. Default is memory usage.

Global Hotkey

Set a custom keyboard shortcut to toggle the dashboard from anywhere on your Mac, even when another app is in focus.

🎛

Customizable Thresholds

Adjust green and yellow boundaries for each metric. Changes take effect immediately. No waiting for the next poll.

Frequently Asked Questions

$4.99 as a one-time payment. That's it. No subscription, no recurring charges, ever. All future updates are included.
No. You pay once and own teenystat forever. There is no subscription and there never will be.
Yes. teenystat comes with a 3-day free trial with full access to every feature. No credit card required.
macOS 14.0 (Sonoma) or later. Works on both Apple Silicon and Intel Macs.
Yes. teenystat is a universal binary that runs natively on both Apple Silicon (M1, M2, M3, M4) and Intel Macs. Sensors are detected automatically based on your hardware.
Only for license validation. All system monitoring happens locally on your Mac with no internet required.
Completely. Everything is processed and stored locally on your Mac. Nothing is sent anywhere - no analytics, no telemetry, no cloud sync. Your system data never leaves your machine.
Fill out this form and I'll look into it as quickly as possible.
Yes! Fill out this form to submit your request. I review each one!

One price. Forever.

teenystat icon
Lifetime License
$4.99
One-time payment. No subscription. Ever.
Purchase License: $4.99 Download App

3-day free trial. No credit card required.