Quick answer
SessionWatcher is a paid usage app for macOS and Windows that covers 22 tools, priced from $6.99. UsageAtlas is free, MIT licensed, runs on Linux too, and covers 14 tools including Claude Code, Codex, and Cursor. If it reads your tools, it does the same job without a license fee.
Side by side
| SessionWatcher | UsageAtlas | |
|---|---|---|
| Price | From $6.99, with a 7-day trial | Free |
| Platforms | macOS 14+, Windows 10 and 11 | Windows, macOS, Linux |
| Tools | 22 | 14 |
| License | Commercial | MIT |
When SessionWatcher may still suit you
It reads more tools. If you depend on one that UsageAtlas does not, paying may be worth it. Check the UsageAtlas provider list before you decide.
Questions, answered
Is there a free alternative to SessionWatcher?
Yes. UsageAtlas is free and open source and tracks Claude Code, Codex, Cursor, Copilot, and 10 more tools on Windows, macOS, and Linux.
Does SessionWatcher run on Linux?
No. As of October 2026 it supports macOS 14 or later and Windows 10 and 11.
What does UsageAtlas lack compared with a paid app?
It reads 14 tools rather than 22 and has no CLI. Check that your tools are covered first.