GoAstern
Sailing logbook + crewing
Free · Designed for iPad. Not verified for macOS.
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.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Bug fixes and weather display for inshore/offshore forecasts
The developer, Mark Olliver, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Location
- Contact Info
- Contacts
- User Content
- Identifiers
- Sensitive Info
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Mark Olliver
- Size
- 12.5 MB
- Category
- Navigation
- Compatibility
Requires iOS 18.1 or later.
- iPhone
Requires iOS 18.1 or later. - iPad
Requires iPadOS 18.1 or later. - Mac
Requires macOS 15.1 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.1 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
User-Generated Content
- Copyright
- © 2026 M Olliver