Percival vs LYFE Offshore

Marine Logbook - Voyage & Fix Logging: Records position fixes, averaged speed, course, and timestamps over the course of a passage. - Observations & Voice Notes: Allows sailors to record voice memos and text notes tied to specific GPS fixes. - Noon-to-Noon Calculations: Calculates traditional passage-making metrics, such as 24-hour day runs (noon-to-noon) and daily distance made good. Live Navigation Instruments - Displays passage data including averaged Speed Over Ground (SOG), Course Over Ground (COG), Velocity Made Good / Velocity Made on Course (VMG/VMC), and range/bearing to destination. - AIS & NMEA Integration: Ingests marine NMEA 0183 data streams and AIS vessel feeds (both local NMEA feeds and internet AIS) to monitor surrounding vessel traffic. ETA windows - Computes ETA estimates based on three velocity calculations. Mapping - Map Views & Waypoints: Plots the voyage track, note markers, and live positions over map layers (including NOAA charts and satellite tiles). Sharing & Passage Data - Standard & Native Exports: Exports trips in standard formats (.gpx, .csv) as well as native Percival voyage backup files (preserving tracks, notes, and voice clips) to share with other crew and sailors.

Quiet when it should be. Loud when it matters. LYFE Offshore is a marine alarm monitor that watches your NMEA data so you don't have to. Sleep at anchor. Stand the night watch. Focus on the boat. LYFE wakes you for the things that actually matter — and stays silent for the rest. Built by a sailor and engineer with years of offshore experience, LYFE is the alarm clock you wish your chartplotter had. CORE FEATURES AIS Watch — Real-time collision detection from AIS targets. Set your CPA (closest point of approach) and TCPA (time to closest point of approach) thresholds. LYFE alerts you when a vessel is on a converging course, with full details: range, CPA, TCPA, bearing sector and vessel name. Anchor Watch — GPS-based anchor drag monitoring with configurable radius. Drop your hook, set the swing circle, and sleep easy. If the boat drifts beyond your radius, LYFE wakes you with a clear fullscreen alarm and your exact distance from anchor. Smart Alerts — Configure custom alarms on any NMEA value: wind speed (AWS, TWS), wind angle (AWA, TWA), wind direction (TWD), course over ground (COG), speed over ground (SOG), depth, and more. Set upper limits, lower limits, or out-of-range rules. APPLE WATCH COMPANION LYFE includes a native watchOS app. Glance at live sailing data on your wrist. Get tactile alarm notifications. Acknowledge or snooze without reaching for your phone. The companion app syncs alarm state with your iPhone in real time. NMEA CONNECTION LYFE connects to any standard NMEA 0183 source over WiFi: - UDP (most common for marine WiFi multiplexers) - TCP Configure your multiplexer to send NMEA sentences to LYFE's port — that is it. Built-in setup guide walks you through it. DESIGNED FOR REAL OFFSHORE USE - Dark-first design — readable at night, minimal cockpit light pollution - Background monitoring — alarms fire even when LYFE is not on screen - Customizable snooze and dismiss behavior - Multiple simultaneous alarms supported - Alarm history log - Simulation mode for testing without a real NMEA source WHAT LYFE IS NOT LYFE is not a chartplotter, not a routing engine, and not a replacement for your radar or AIS transponder. It is the watchful ear that listens to your existing NMEA network and wakes you when something matters. PRIVACY LYFE works entirely on-device. NMEA data stays on your boat. No cloud sync, no telemetry, no accounts. ABOUT LYFE Offshore is built by Kalle Coster, a professional sailor and engineer, after years of offshore sailing, racing and living aboard with his family. Designed from real-world experience — focused on reliable alerts, clarity and trust when it matters most. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.lyfeoffshore.com/privacy