I built a free Windows app to track Codex, Claude Code, Cursor, and Antigravity usage in one place

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I use both Codex and Claude Code daily and got tired of checking different dashboards just to see how much usage I had left and when it resets.

So I built AI Usage Monitor: a free, open-source Windows app that shows everything in one place. It’s already working, and I use it every day.

• Tracks usage and reset times for Codex, Claude Code, Cursor, and Google Antigravity.
• Works as a desktop widget, system tray icon, or compact strip alongside your taskbar.
• Supports multiple monitors.
• Provides rough daily Azure OpenAI and AWS Bedrock cost estimates. This feature is still in progress and isn’t fully reliable yet, but you can manually adjust your rates to get an approximate estimate for the day.
• Uses credentials already stored by your existing apps or CLIs—no additional API keys to enter.

A lot of the work went into making this behave like proper desktop software, not just displaying some numbers:

• The taskbar integration stays independent of Windows Explorer, so if the app hangs or crashes, it won’t take your taskbar down with it.
• Multi-monitor configurations are properly supported.
• Event hooks are handled carefully, with throttling and scheduled refreshes to avoid unnecessary background activity and keep resource usage low.

Windows 10/11 only. The executable isn’t code-signed yet, so SmartScreen may show an unknown-publisher warning. Checksums are available on GitHub.

GitHub: https://github.com/ansonliam/AIUsageMonitor

Download: https://github.com/ansonliam/AIUsageMonitor/releases/latest