Log every mile.
Remember every anchorage.
The offline sailing logbook & charter helper — pay once, no subscription.
The offline sailing logbook & charter helper — pay once, no subscription.
Quick fixes on the hour, photos when something happens, and a clean PDF for the charter when you hand the boat back. Nothing more, nothing less.
Log by hand with one tap — or let the app record your position automatically at a set interval while you sail. It even smart-detects anchorages, buoys and ports on its own, with the bay name filled in.
Your boat, your full past track and every saved spot on one live map — tap a spot to view it, or hide visited spots. High and low water times with a spring–neap badge on the Sun & Moon screen, computed offline — no signal needed.
24-item check-in / out checklist with timestamped damage and missing items — turned into a one-tap PDF.
Mark each expense Shared or Individual and group people (families / cabins) — split per person or per group, with a shared-vs-individual report you can export to PDF and Excel. A refuel even creates its fuel expense automatically.
Logbook as polished PDF (with route map) and styled XLSX. Share to Files, WhatsApp, Drive — or email both attached.
Open-Meteo wind-arrow map, 48-hour hourly strip, and auto alarms for storms, gusts, and rapid pressure drops on the active trip.
Tonight's calmest spots to anchor near you, ranked by shelter, with a wind-direction colour legend.
Create a vessel from a charter screenshot or a listing link — the details pre-fill a new trip.
Vessel, crew, charter contacts and dates. Reuse names from past trips.
Hourly GPS fixes with course, speed, wind, weather, sea. Auto-named bays.
Save anchorages with photos. App auto-detects stays over an hour.
Add expenses, shared or individual. The engine names who pays whom.
Damage protocol PDF for the charter, full logbook PDF + XLSX for you.
Offshore in the Adriatic? In a Croatian bay forty nautical miles from the nearest tower? The app captures every fix, every spot, every photo, every euro — all of it on your phone. The next time you have signal, share the result.
A single big LOG POSITION NOW button is the heart of the app — it grabs your GPS, the time, course over ground and speed, and asks OpenStreetMap for the closest named feature.
48.736, N48° 44.40', N48,44, N48 44 24 — always displayed as nautical DMM.Log every expense, mark it Shared or Individual, and the settlement engine names the minimal "who pays whom" transfers so everyone ends up equal.
No account. No tracking. Your trips, positions, photos, costs and exports never leave your device — except when you share or email them. The only network calls are the optional OpenStreetMap reverse-geocode and the tiles you see on the track map.
Switch the app's language anytime. Reports can stay in English for the charter, or follow the app — your call.
A 30-day free trial with everything unlocked, then a single one-time purchase. All future updates included. Never a subscription.
This is the actual Sailing Log app running in your browser, pre-loaded with a real Adriatic charter. Open the trip, browse the log, split the costs — everything works.
Open the demo →Demo data only — your changes stay in your browser and are never uploaded. A few device-only features (live GPS, barometer, store purchase) are naturally limited on the web.
The demo is in English.
Live now on Google Play and the App Store. Log your first passage today — questions? [email protected].
Yes. The ship's log, expenses, checklist, exports and JSON backup all work fully offline. The two optional network features are the OpenStreetMap reverse geocode (used to name a bay/beach automatically when you save a position) and the live track-map tiles. Both degrade gracefully — your route still draws over an empty grid offline.
In your phone's app sandbox. There is no cloud, no account and no analytics. Use the one-tap JSON export to move your data to another device.
Yes. The Check-in / Check-out checklist gathers timestamped damage and missing items with up to 3 photos each. Tap Export / send damage protocol to share the PDF or email it straight to the charter company.
Per-trip you can define groups of members (e.g. "Smith family", "Cabin 2"). Switch the settlement to By group and the engine settles between groups instead of individuals. Member-level totals are still shown for transparency.
Decimal degrees (48.736, ± allowed), degrees + decimal minutes with the
hemisphere prefix (N48° 44.40'), shorthand (N48,44),
and degrees-minutes-seconds (N48 44 24). The app always displays the canonical
N48° 44.40' form.
Yes. Settings → Export JSON writes everything to a single file you can email yourself or drop into any cloud drive. The app itself is a commercial product (not open source), but your data never is — it stays yours, in a plain documented format, forever.