Demurrage calculator
Demurrage Days You Can Inspect
Separate calendar days, free time, documented holds, chargeable days, and the exportable dispute record.
Date arithmetic you can inspect
Free time
Carrier free-time terms and arrival/release dates are visible beside the result.
Hold merge
In the full app, holds that overlap are merged before the chargeable-day count so days are not counted twice.
Dispute packet
The export includes source dates, notes, and the field-record footer for checking outside the app.