Track API CostsAcross Your Projects
Open-source desktop app for solo founders building agentic systems. Monitor costs from multiple AI providers in real-time from your menu bar.
Free • Open Source • Privacy-Focused
Building agentic systems means juggling multiple AI providers. With costs scattered across different dashboards, no unified view of your spending, difficulty tracking A/B test expenses, and beta testing keys that are hard to manage.
Get a single, live dashboard that puts all your API costs in one place—directly in your menu bar. Instantly track every project, experiment, or key. Make informed decisions, avoid surprises, and stay in control of your AI budget with complete confidence.
Everything You Need
Built for solo founders who need complete visibility into their API spending
How It Works
Get started in minutes with our simple setup process
Download & Install
Get the desktop app from GitHub and install it on your Mac, Windows, or Linux machine.
Add API Keys
Securely add your API keys from various providers. All keys are encrypted and stored locally.
Select Projects
Create and organize projects to track costs separately for different applications or experiments.
Monitor Real-Time
View live cost updates directly from your menu bar. Get instant insights into your API spending.
Simply Transparent
Start free with open-source app. Upgrade for cloud features.
- Full desktop app functionality
- Unlimited projects
- Local API key storage
- All supported providers
- Real-time cost tracking
- Community support
- Self-hosted deployment
- All free features
- Cloud sync across devices
- Encrypted cloud storage
- Advanced analytics
- Cost forecasting
- Priority support
- Early access to new features
Frequently Asked Questions
Everything you need to know about UsageBar
Start Tracking Your API Costs Today
Free, open-source, and privacy-focused.
No credit card required.
Join the growing community of solo founders tracking their AI costs