AngelNav vs GoAstern

AngelNav is a new app for iOS developed in collaboration with Tom Cunliffe. Primarily it is a full chart plotter currently favouring raster charts, but it has many additional features including the ability to carry out traditional navigation directly on the screen. The capacity to generate classical chart work is vitally important in the event of a GPS failure, but hitherto has required pencil, plotters, and paper charts. AngelNav allows traditional techniques to be carried out using an iPad or iPhone screen instead of a paper chart. An estimated position can be plotted, position lines drawn from sighted bearings and fixes recorded. Course-to-steer diagrams are readily constructed. AngelNav can read most types of raster chart including the UKHO subscription charts, as well as KAP/BSB files and GeoTIFF files. It can easily create georeferenced satellite charts for offline use. AngelNav can take GNSS navigation data from a variety of sources, including the device's stand-alone GPS, the boat's NMEA over WiFi, and SignalK. It will also display AIS information if available. Annual subscriptions are available as in-app purchases for UKHO, SHOM, and Imray charts covering the whole of the UK, France, Spain, the Mediterranean and the Caribbean. These are divided into folios so that you can subscribe only to the charts that you need. The app is free to use in its basic form, with additional functions and charts available as in-app purchases. This allows a user to fully evaluate the app without charge, and then to purchase the features and charts required. Free features: Chart plotter (Demo chart included) Traditional navigation techniques Waypoints and Routes Track recording and display Reads navigational data Simulation mode Paid for features (in-app purchases): Open KAP/BSB files Open GeoTIFF files Open Satellite charts Display AIS targets (if AIS information is available) Tidal information for the British Isles Subscription Charts: Charts derived from UKHO data covering the coastal waters of the British isles, the Atlantic coast of Spain and Portugal including the Atlantic islands. SHOM charts of the coasts of France Imray charts of of the Mediterranean, Caribbean, and others Key features: Brand new app written from the ground up Carry out traditional navigation techniques on screen Free to download to for evaluation, with in-app purchases to add only the features required Frequent updates of subscription charts including handling of notice to mariners Custom keyboard for entry of waypoint latitude and longitude Open KPA/BSB and GeoTIFF files (in-app purchase required) Create Satellite charts for off line use (in-app purchase required) Display AIS targets on the chart (in-app purchase required) NOTE: The continued use of GPS running in the background can dramatically decrease battery life

GoAstern is a sailing logbook and crewing app for skippers who want a single place to plan, run, and review every passage. **Plan a passage** - Drop waypoints by tapping the map or searching the catalogue of UK + NW European harbours and racing marks - Drag waypoints to fine-tune the route; tag each as start / via / destination / hazard / escape - Per-mark passing-side notes (port / starboard) and free-text approach notes - Built-in tide forecasts (UKHO Admiralty for UK waters, WorldTides elsewhere) at every harbour, including secondary-port working - Crew roster with optional Apple ID linking — claim crew members so each device sees the same vessel history **Run a passage** - Live GPS track recording, optimised for offshore use (background-friendly, force-quit-tolerant) - Map shows planned route + actual track side by side, with deviation visible at a glance - One-tap event logging: Tack, Gybe, Reef, Engine on/off, Sail change - MOB workflow: bearing-and-distance tracker from the moment of trigger, anchored to the recovered position - Garmin Connect IQ companion (sold separately, free): log entries and trigger MOB straight from your wrist **Review a passage** - Briefing pack PDF (skipper + crew sheet, route, tides, hazards, vessel + emergency contact info) - GPX export for chartplotter import / sharing - Personal logbook view shows every passage you've sailed across all your boats **Crewing** - Publish a passage so previously-linked crew can express interest in joining - Skipper accepts / declines from the iOS app or the web (https://goastern.com) - Crew automatically see briefing PDFs and tracks for passages they sailed **Privacy by default** - Field-level encryption for crew passport / DOB / address. Only included in briefings + shares when you explicitly opt in - Account deletion wipes vessels, passages, profile, and contacts in one tap - iCloud sync for your own logbook; opt-in crew sharing across devices The app works offline — only sharing, push notifications, and tide forecasts need a connection. Made by sailors, for sailors.