Don't get caught at zero.
You know that moment when Claude just stops talking mid-sentence? Yeah. OhNine sits in your menu bar so you always see how much runway you have left. Session limits. Weekly caps. Real-time. No more surprises.
There's no usage meter.
Just a wall.
There's no countdown. No yellow light. No "hey, you've got 3 messages left." One second you're deep in a conversation. The next, you're waiting for a reset you can't see.
Usage limits exist for a reason. But right now there's no easy way to see where you stand. OhNine fills that gap.
Mid-conversation cutoff
Mid-conversation cutoff. No warning, no countdown. You find out when it happens.
No visibility into limits
How much is left? When does it reset? There's no dashboard for that. Yet.
Weekly caps are invisible
Session limits, weekly caps, per-model caps. Multiple layers of limits that aren't visible in one place.
Workflow destroyed
You were in flow. Coding. Writing. Designing. And then you hit the wall without seeing it coming.
Tiny app. Big peace of mind.
360 pixels wide. Lives in your menu bar. Does one thing and does it well.
Dark mode
Default look. Session bar, weekly caps, auto-sync pills. Everything at a glance.
Light mode
For the daylight people. Same info, easier on the eyes when the sun is out.
Oh Nein.
When you hit 100%, the mascot gets sad and walks back. Cute? Yes. Helpful? Also yes.
Built for people who actually use Claude
Not a dashboard. Not a browser extension. A tiny app in your menu bar that does exactly one thing well.
Session tracking
Live progress bar for your current session. Percentage, reset countdown, and a little mascot that walks with you. Hit 100% and it gets tired, dims out, and sadly walks back to zero.
Oh Nein. alerts
Native desktop notifications at 80%, 91%, and 100%. Three warnings before impact. Because finding out you're at zero mid-coding session is basically emotional damage.
Auto-sync
Set it and forget it. Syncs every 30 seconds to once an hour. Or go manual if you like pressing buttons. No judgment.
Dark and light mode
Looks good at 3 AM and 3 PM. Toggle between dark and light with one click. Your retinas deserve it.
Weekly limits too
Tracks all-model and Sonnet-specific weekly caps. So when you think "I'll just switch models" and it still says no, at least you'll know why.
Zero data collected
Everything stays on your device. No analytics. No telemetry. I literally do not know you exist after you download this. And that's by design.
Install and sign in
Open the app once, sign in with your Claude account. That's it. OhNine remembers you.
Pick your sync speed
From every 30 seconds to once an hour. Or turn auto off and sync manually when you feel like it.
Never hit zero blind
OhNine alerts you at 9% remaining. The name is the warning. Oh nine. Oh nein.
Small app. No nonsense.
Platform
macOS (Apple Silicon + Intel), Windows 10+, Linux (AppImage + .deb).
Built With
Same tech behind VS Code, Slack, and Discord. Proven. Stable. Not going anywhere.
Privacy
Zero data leaves your machine. No analytics. No tracking. No telemetry. That's the whole deal.
Install guide
No account to create. No browser extension. Just download, drag, sign in.
Download the .dmg
Download the .dmg for your Mac from raxxo.shop/ohnine-download. Save it anywhere.
Open the .dmg
Double-click the file. A window opens showing OhNine and your Applications folder. Drag OhNine into Applications.
Remove quarantine flag
macOS blocks unsigned apps by default. Open Terminal and run:
xattr -cr /Applications/OhNine.app
You only need to do this once. It removes the macOS quarantine flag that blocks apps without a paid Apple Developer certificate.
Sign in
Open OhNine from Applications. Click the menu bar icon, sign in with your Claude account. If you have multiple workspaces (e.g. Team + Personal), switch to the one you want to track before closing the login window. You can switch later via right-click > Switch Workspace.
Why the security warning? Apple requires developers to pay for a yearly certificate. OhNine is a free, open-source indie app and doesn't have a paid Apple Developer certificate. The app is open about what it does: it reads your claude.ai usage page and shows the numbers. Nothing else. No data leaves your machine.
Download the .exe installer
Download the .exe installer from raxxo.shop/ohnine-download. Save it anywhere.
Run the installer
Double-click the .exe. Windows SmartScreen may show "Windows protected your PC." This is normal for new apps without an expensive code signing certificate.
Click More info, then click Run anyway. The installer takes a few seconds.
Launch OhNine
Find OhNine in your Start menu or system tray. Click the icon, sign in with your Claude account, and you're set.
Why the SmartScreen warning? Windows shows this for any new app that hasn't been downloaded thousands of times yet. It's not a virus warning. It just means the app is new. OhNine reads your claude.ai usage page locally. No data is sent anywhere.
AppImage
Download the .AppImage file. Make it executable: right-click > Properties > Permissions > "Allow executing" or run chmod +x OhNine-*.AppImage. Then double-click to run.
.deb (Ubuntu, Debian, Pop!_OS)
Download the .deb file. Install with sudo dpkg -i ohnine_*.deb or double-click to open in your software center.
Sign in
Find OhNine in your system tray. Click the icon, sign in with your Claude account. Done.
GNOME users: GNOME removed system tray support. Install the "AppIndicator and KStatusNotifierItem Support" extension for OhNine to appear in your top bar. KDE and XFCE work out of the box.
Free. Open source. Zero strings.
Open source. All platforms. MIT License.
- ✓ Menu bar usage tracker
- ✓ Session + weekly monitoring
- ✓ Notifications at 80%, 91%, 100%
- ✓ Multi-workspace support
- ✓ Dark + Light themes
- ✓ macOS, Windows, Linux
- ✓ Auto-sync configurable interval
- ✓ Zero data collection
macOS, Windows, Linux. MIT License.
Questions you probably have
Still unsure? Email help@raxxo.shop
No. OhNine reads your usage data from claude.ai using your own browser session. Your credentials stay on your device. I have zero access to your account, your conversations, or anything else. I literally cannot see your data even if I wanted to.
Technically yes, but the free tier doesn't show usage limits the same way. OhNine is built for Claude Pro and Team users who actually have meaningful limits to track.
OhNine reads your own usage data from your own account. It doesn't automate conversations, bypass limits, or do anything sketchy. That said, this is an independent tool and I can't make guarantees about Anthropic's policies. You're responsible for your own compliance with their Terms of Service.
macOS (Apple Silicon and Intel), Windows 10+, and Linux (AppImage and .deb). Pick your platform on the GitHub releases page.
I update OhNine. It is open source, so fixes ship fast and anyone can contribute. If Anthropic changes how usage data is exposed, I will ship a fix.
Yes. OhNine is MIT licensed. You can use it, modify it, and redistribute it. The full source code is on GitHub. Install it on as many machines as you want.
RAXXO Studios. One-person creative studio in Berlin. I build tools, ship products, and experiment with AI every day. OhNine exists because I kept hitting Claude's limits and got tired of not knowing when it was coming.
When you hit 91% usage, you have 9% left. Oh nine. And if you speak German: oh nein. The name is the warning.
Stop guessing.
Start knowing.
Every Claude power user has been there. Mid-conversation. Deep in flow. And then nothing. OhNine makes sure you see it coming. Because the only thing worse than running out of Claude is not knowing it was about to happen.
macOS, Windows, Linux
Native desktop app. Sits in your menu bar or system tray.
Requires Claude Pro or Team
You need an active claude.ai subscription. Free tier has no limits to track.
Free and open source
No account needed. Download from GitHub. MIT License.