OhNine - Claude Usage Meter for macOS, Windows & Linux

Don't get caught at zero.

OhNine sits in your menu bar and tracks your Claude usage limits in real time. Session limits, weekly caps, model-specific tracking. Know before Claude says no.

What you get

• Live session bar with color-coded progress (green, yellow, orange, red)
• Weekly limit tracking for all models and Sonnet-specific caps
• Native notifications at 80%, 91%, and 100% usage
• Auto-sync from every 30 seconds to once an hour
• Dark and light mode with one-click toggle
• Pin window to keep it visible while you work
• Multiple workspaces - switch between Team and Personal plans
• Cross-platform - macOS (Apple Silicon + Intel), Windows, Linux

Install (macOS)

1. Open the .dmg and drag OhNine into Applications
2. Open Terminal and run: xattr -cr /Applications/OhNine.app
3. Open OhNine from Applications, sign in with Claude

The xattr command removes the macOS quarantine flag. Required for all indie apps without a paid Apple Developer certificate (about 99 EUR/year). You only need to do this once.

Install (Windows)

1. Run the .exe installer
2. If SmartScreen says "Windows protected your PC", click More info then Run anyway
3. Find OhNine in your system tray, sign in with Claude

Multiple workspaces

If you have both a Team and Personal plan on the same email, OhNine tracks whichever workspace you select during sign-in. To switch later: right-click the tray icon > Switch Workspace.

Requirements

• macOS 12+ or Windows 10+ or Linux
• Active Claude Pro, Max, or Team subscription
• Internet connection

Privacy

No data is sent to RAXXO Studios or any third party. No analytics. No telemetry. Everything stays on your device.

Oh nine. Oh nein.

Digital product. Download link delivered via email after purchase. Personal license, one user. Free updates included. Not affiliated with Anthropic.