KisoStats

Introduction

KisoStats (基礎) is a lightweight system monitor for macOS that lives in your menu bar. Monitor your Mac's CPU, RAM, SSD, and network performance at a glance — without opening any windows.

• Free — No subscription, no in-app purchases
• Private — No data collection, no analytics, no network requests
• Lightweight — Less than 5 MB, minimal resource usage
• Disk Cleanup — Built-in tool to free up storage space
• Multilingual — English, German, and Japanese

Key Features

• Real-time CPU, RAM, SSD, and network monitoring in the menu bar
• Color-coded status indicators for quick health checks
• Disk cleanup with safe category-based file removal
• Auto-start at login option
• Instant language switching (EN/DE/JA) without restart
• Universal Binary — runs natively on Apple Silicon and Intel

Installation

Step 1: Download

Download the latest KisoStats DMG from kyototech.co.jp.

Step 2: Install

1. Open the downloaded .dmg file
2. Drag KisoStats to your Applications folder
3. Eject the DMG

Step 3: Launch

1. Open KisoStats from your Applications folder
2. If prompted, click Open to confirm you trust the developer
3. Grant any requested permissions when prompted

System Requirements

Requirement	Details
macOS	14.0 (Sonoma) or later
Architecture	Apple Silicon (M1/M2/M3/M4) & Intel — Universal Binary
Disk Space	Less than 5 MB
Internet	Not required — works entirely offline

Menu Bar Display

After launching, KisoStats appears in your macOS menu bar with a compact two-line display that updates every 2 seconds:

↓12.5K  CPU 15%  SSD 45%
↑8.2K   RAM 6.2G

Symbol	Meaning
↓	Download speed (current network receive rate)
↑	Upload speed (current network transmit rate)
CPU	Processor usage percentage
RAM	Memory currently in use (in GB)
SSD	Storage usage percentage

Click on the menu bar display to open the detail panel with full system statistics and the disk cleanup tool.

System Monitor

The Monitor tab in the detail panel shows comprehensive system statistics with visual indicators:

CPU

Current processor usage displayed as a percentage with a progress bar. Shows real-time load across all cores.

RAM

Memory usage in gigabytes with a percentage indicator. Shows how much of your total RAM is currently in use.

SSD

Storage usage with total capacity displayed. Shows used space as a percentage of your disk.

Network

Real-time download and upload speeds. Automatically scales between B/s, KB/s, MB/s, and GB/s.

Color Indicators

Each metric uses color coding for quick health assessment:

Color	Usage Range	Status
Green	Under 50%	Normal
Orange	50% – 80%	Elevated
Red	Over 80%	Critical

Disk Cleanup

The Cleanup tab helps you free up disk space by safely removing temporary and unnecessary files.

Cleanup Categories

Category	Description
User Cache	Application cache files stored in ~/Library/Caches
Log Files	System and application log files
Downloads (>30 days)	Files in your Downloads folder older than 30 days
Trash	Empty your Trash via Finder automation
Xcode DerivedData	Build artifacts from Xcode (for developers)

How to Clean Up

1. Open the detail panel by clicking KisoStats in the menu bar
2. Switch to the Cleanup tab
3. Click the refresh button to scan for removable files
4. Review each category and its estimated size
5. Uncheck any categories you want to keep
6. Click the trash button to clean the selected categories

Settings

Auto-Start at Login

Click the power button icon in the panel header to toggle auto-start:

State	Meaning
Blue	KisoStats starts automatically at login
Gray	Manual start only

Language

KisoStats supports three languages:

• English
• German (Deutsch)
• Japanese (日本語)

To change the language, click the globe icon in the panel header and select your preferred language. The change takes effect immediately — no restart required.

Privacy

KisoStats is designed with privacy as a core principle:

• No data collection — KisoStats does not collect any personal or usage data
• No analytics — No tracking, no telemetry, no crash reporting
• No network requests — KisoStats never connects to the internet
• Everything stays local — All system metrics are read and displayed locally on your Mac

The only permission KisoStats may request is Automation access to Finder, which is used exclusively for the "Empty Trash" cleanup feature. This permission is optional — all other features work without it.

Troubleshooting

Common Issues

Issue	Solution
KisoStats does not appear in the menu bar	Check if KisoStats is running in Activity Monitor. Try quitting and restarting the app. Also check System Settings → Control Center → Menu Bar Only.
Cleanup does not free expected space	Some system files may be in use and cannot be removed while active. Try restarting your Mac and running the cleanup again.
Permission errors during cleanup	KisoStats needs Automation permission to empty the Trash. Go to System Settings → Privacy & Security → Automation and ensure KisoStats has access to Finder.
CPU/RAM shows incorrect values	System metrics update every 2 seconds. Wait a moment for accurate readings to stabilize.
Some cleanup categories are grayed out	Categories with 0 bytes are automatically disabled. Click the refresh button to rescan.

Uninstalling KisoStats

To completely remove KisoStats from your Mac:

1. Quit KisoStats (click the × button in the panel)
2. Drag KisoStats from the Applications folder to the Trash
3. Empty the Trash

Support & Contact

Resources

• Website: kyototech.co.jp
• Email: support@kyototech.co.jp

Updating KisoStats

Download the latest version from kyototech.co.jp and replace the existing app in your Applications folder.

Copyright 2025-2026 KyotoTech LLC. All Rights Reserved.
This documentation is for KisoStats version 1.2.