A terminal stopwatch with split tracking, persistent state, and calendar export. Built with Bubble Tea.

• Millisecond-precision stopwatch
• Split tracking with lap times and timestamps
• Store State with SQLITE DB — the timer keeps running even after the app is closed. Reopening the app resumes from where it left off
• Editable split names with inline text inputs
• Delete splits (merges elapsed time into the previous split)
• Fullscreen / inline display toggle
• Export splits to .ics (iCalendar) or as gws CLI commands for Google Calendar

git clone https://github.com/jwc20/stopwatch-tui
cd stopwatch-tui
go build -o stopwatch-tui .
./stopwatch-tui

Each split row shows:

>  1.  00:12.345  (+00:12.345)  2026-03-05 10:32:01  [My event name_]
   2.  00:25.678  (+00:13.333)  2026-03-05 10:32:14  [Split 2      ]

• Cumulative elapsed time
• Lap time since the previous split (in parentheses)
• Wall-clock timestamp when the split was recorded
• Editable name field (used as the event title on export)

When a split is deleted, its elapsed time is merged into the previous split so the total elapsed time is preserved.

Exports splits as a standard iCalendar file (splits_<timestamp>.ics) using golang-ical. Each split becomes a calendar event spanning from the previous split's timestamp to the current one. The event summary is the split name (or Split N if unnamed).

You must enable Google Calendar API and set up credentials on Google Cloud to use this feature.

Exports splits as a shell script (splits_<timestamp>.sh) containing one gws calendar +insert command per split, ready to run against Google Calendar via the gws CLI.

gws calendar +insert --summary "Morning run" \
  --start "2026-03-05T10:32:00-08:00" \
  --end "2026-03-05T10:44:12-08:00" \
  --description "Split 1 of 3 | Elapsed: 00:12.345 | Lap: 00:12.345"

Review the file before running: cat splits_<timestamp>.sh, then execute with ./splits_<timestamp>.sh.

• charm.land/bubbletea
• charm.land/bubbles
• charmbracelet/lipgloss
• arran4/golang-ical

• googleworkspace/cli

.
├── main.go          # TUI model, keybindings, view
├── db.go            # Store state into db
├── ics.go           # iCalendar export
├── gws.go           # gws CLI command export
└── stopwatch/
    └── stopwatch.go # Stopwatch model (tick, split, delete, reset)