BOAT 4DAT

BOAT 4DAT is the maintenance log your vessel deserves. Track every boat you maintain, keep the work list honest, and know what the fleet actually costs — fully offline, on your phone.

YOUR FLEET
Log each vessel with its specs: type, year, builder and model, engine, and hours. The free plan covers one boat; BOAT 4DAT Pro — an optional yearly subscription for owners, captains, and charter operators — unlocks an unlimited fleet.

MAINTENANCE, GROUPED BY URGENCY
Add tasks with priority and due dates and they sort themselves: Overdue, Due within 14 days, Scheduled later, No due date. Complete a task and it moves into the service history with its real cost.

REAL COSTS
Every task carries parts, labor, and yard costs. The Costs tab rolls them up — this month, this year, all time, and per boat — plus the estimated cost of the open work queue.

RESTOCK SUPPLIES
Curated marine consumables — engine oil, filters, zinc anodes, fuel stabilizer, bilge gear. As an Amazon Associate, 4DAT earns from qualifying purchases; links only open Amazon in your browser, and nothing is ever purchased automatically.

PRIVACY FIRST
Everything stays on your device: no account, no analytics, no tracking SDKs, and the app requests zero permissions. Erase everything anytime from Settings.

Recent changes:
Maintenance update: upgraded Google Play Billing library. No feature changes.