Original menu
Menu bar battery + balanced popover with power source, energy mode, and apps. Switch to Newer in settings for a denser compact chrome.
Menu bar · local only · macOS 13+
Fathom Air — battery, explained
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.
Download Fathom Air
Fathom-v0.3.8-Beta.zip
Current · v0.3.8-Beta · Original menu · Newer layout option · dashboard window
- Latest
- v0.3.8-Beta
- Download
- Fathom-v0.3.8-Beta.zip
- Requires
- macOS 13+
- Price
- Free
- Source
- GitHub
Features
What you get
Battery-first menu bar UI in Fathom’s original style, with an optional denser Newer layout — plus drain attribution.
Dashboard window
Full non-menubar UI: big %, package watts, clean rows, and drain detail — open from the menu or right‑click.
Apps using energy
Top processes by local energy-impact estimate, with High / Moderate / Low labels.
Why drain?
Rolling local log + “why did battery drop?” summary for the last hour in plain English.
Flow
From install to insight
Install
Curl installer compiles on your Mac, or drop in the App ZIP.
Menu bar
Battery + % appears. ⌘-drag to reposition; optional replace system Battery.
Explain drain
Open the panel for watts, top apps, and last-hour why-drain summary.
Lineup
Fathom Air vs Fathom Pro
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 | $2 Ko-fi license (oi-pl2) |
Hosts
Path & subdomain
Path
/fathom/
Subdomain
fathom.chopstickshq.com
Gallery
What it looks like
Menu bar battery + popover — same family as the MacBar product pages.
Wi‑Fi · 87% · Fri 11:42
87%
On Battery · package 12.4 W
Power SourceBattery
Energy ModeLow Power Off
Apps Using EnergySafari · High
Why drain?Last hour
Time2h 15m left
Top energySafari · High
Dashboard
Why drain?
Last hour · local log
Drop≈ 4%
CulpritBrowser · High
Package9.1 W avg
Install
Downloads
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.
1 · curl install (recommended)
Fetches the current App ZIP, verifies its SHA-256, and installs to ~/Applications/Fathom.app. No Xcode needed.
$
curl -fsSL https://github.com/ilikemacos/Fathom/releases/download/v0.3.8-Beta/install-fathom.sh | bash
Always installs whatever version.json lists as current. To compile from source instead (needs Xcode Command Line Tools): install.sh.
2 · App ZIP — fallback
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.
Privacy
On-device only
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
Disclaimer: All ChopsticksHQ software (including Fathom Air) is provided “AS IS” with no warranties. Use at your own risk. Full software disclaimer