⚓ Days at Sea
For seafarers on rotation

Know your sea time,
to the day.

Track your rotation, contract, and pay — built for crew on day-rate or flat-salary contracts. Set your ratio once, log as you go, and always know where your balance stands.

A 3:1 rotation, one cycle
21 days worked 7 days off
Contract setup screen — rotation ratio, currency, salary, and travel-day rules
Set up once
Calendar view with a month of on-board, travel, and at-home days marked
Log as you go
Summary screen showing days on board, travel days, days at home, and days-off balance
See your balance
The logbook

Everything a contract needs tracked

Set it up once at the start of your contract, then log a few minutes at a time.

Rotation & contract type

2:1, 3:1, 2:2, 4:1, or a custom ratio — plus day-rate or flat-salary pay structure, set once and applied automatically.

Calendar or board view

Log worked days, travel days, and days off however you think about your rotation — flip between a calendar and a board.

Pay & travel-day rules

Configure whether travel counts as worked time and whether it accrues days off, then watch running balances update themselves.

Backup, anytime

Export your full log as a JSON file whenever you want — to move phones, keep a personal record, or just sleep easy.

On board, not in the cloud

Your log stays yours

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No account, no ads, no tracking

Days at Sea makes no network requests and includes no analytics or third-party SDKs. Every entry is stored locally on your device. If you export a backup, that file is created and shared entirely by you — nothing is ever sent to us, because there's no server to send it to.