Apps by Portside

Portside

A quiet, offline-first logbook for the vessels you've sailed on, the ports you've visited, and the rank you held at the time.

• Vessel log grouped by sign-on session
• Port history sorted by latest departure
• Offline nautical maps with seamarks
• Optional cloud sync across devices
• Export & import — JSON and CSV
• Mariner Pro upgrade — global routing, $14.99 once
• Light and dark mode

Bonded Stores

Bonded store accounting built for the sea. Track inventory, crew issues, representation accounts, and monthly purchases with automatic calculations in any currency. Works fully offline, exports full reports as PDF or CSV, and keeps your data private on your device.

• Inventory with multi-currency pricing and FX rates
• Crew individual vouchers and consumption tracking
• Representation accounts — Library, Charterer, Owner, Cadets
• Automatic stock reconciliation with physical counts
• Month-end close with archival and carry-forward
• PDF and JSON export — no cloud required

Sea Wages

A seafarer's wage tracker for contract-based earnings. Log monthly rates, sign-on and sign-off travel days, allotments, MPO, and deductions — with automatic proration and multi-currency support.

• Monthly earnings with automatic proration (days ÷ 30)
• Sign-on and sign-off travel pay at basic daily rate
• Allotment, MPO, and fixed remittances in any currency
• Slop chest, Danish pension, cash advance, other deductions
• Vacation leave tracking with running balance
• Carry-forward balance and mid-contract opening balance
• Ends contract automatically at sign-off

LSA & FFE

A complete, offline register for every life saving appliance and fire fighting item aboard. Tracks last service, next renewal, and expiry — with at-a-glance status pills.

• Sections → Groups → Items register
• Status pills — Overdue, Due soon, Valid
• Search and filter with live counts
• Physical inspection checkmarks + progress bar
• CSV & PDF export · CSV import — backup and restore
• Fully offline · no account · no internet

Coordinates Converter

A fast, precise utility for converting between DMS and decimal coordinate formats. Built for hikers, sailors, surveyors, pilots, and anyone who works with map coordinates.

• DMS ↔ Decimal conversion — both directions, live
• Smart input clamping — no invalid coordinates possible
• One-tap "Use my current location" from GPS
• Copy latitude, longitude, or both together
• AMOLED-friendly light and dark themes
• No ads, no tracking, no internet permission

More to come

We're working on new tools for the maritime world. Check back soon.