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Original menu
Menu bar battery + balanced popover with power source, energy mode, and apps. Switch to Newer in settings for a denser compact chrome.
Free tier of Fathom: original-style battery menu for your Mac — live level, package watts, apps using energy, and a plain-language “why drain?” timeline. Data stays on this Mac. Want weather + AI? That’s Fathom Pro.
No accounts. No telemetry.
Battery-first menu bar UI in Fathom’s original style, with an optional denser Newer layout — plus drain attribution.
Menu bar battery + balanced popover with power source, energy mode, and apps. Switch to Newer in settings for a denser compact chrome.
Full non-menubar UI: big %, package watts, clean rows, and drain detail — open from the menu or right‑click.
Top processes by local energy-impact estimate, with High / Moderate / Low labels.
Rolling local log + “why did battery drop?” summary for the last hour in plain English.
Curl installer compiles on your Mac, or drop in the App ZIP.
Battery + % appears. ⌘-drag to reposition; optional replace system Battery.
Open the panel for watts, top apps, and last-hour why-drain summary.
Fathom Air is the free battery app. Fathom Pro adds weather and multi-provider AI on the same core.
| Feature | Fathom Air | Fathom Pro |
|---|---|---|
| Price | Free | Free · unlock key |
| Menu bar battery % + time | Yes | Yes |
| Colored battery icon | Yes | Yes |
| Package watts + power distribution | Yes | Yes |
| Top energy apps · why drain? | Yes | Yes |
| Charge limit controls | Yes | Yes |
| Full window + Customize | Yes | Yes |
| Local weather | — | Yes |
| AI chat (your provider keys) | — | Yes |
| API Config (Keychain) | — | AI → API Config |
| Unlock | None | Vault oi-pl or scavenger |
/fathom/
fathom.chopstickshq.com
Menu bar battery + popover — same family as the MacBar product pages.
Use the curl installer. Browser downloads get macOS’s quarantine flag, so
Gatekeeper blocks the App ZIP on first launch; the installer writes the app straight to
~/Applications without it.
Served from Chopsticks HQ (Netlify edge CDN). Artifacts track version.json.
Fetches the current App ZIP, verifies its SHA-256, and installs to ~/Applications/Fathom.app. No Xcode needed.
curl -fsSL https://chopstickshq.com/fathom/install-fathom.sh | bash
Always installs whatever version.json lists as current. To compile from source instead (needs Xcode Command Line Tools): install.sh.
Unzip → open Fathom.app (branded Fathom Air). Gatekeeper will block this on first launch — right-click → Open, then Open again, or use the curl installer above instead.
Fathom does not create accounts and does not send usage data.
Optional update check can read version.json from this site only.
Process names and battery samples never leave your machine.
Disclaimer: All ChopsticksHQ software (including Fathom Air) is provided “AS IS” with no warranties. Use at your own risk. Full software disclaimer