AngelNav2.0.12 - App Store

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

Version History Adds the ability to set any time on the device without affecting chart store security 2.0.12 Jul 1 Added support for more GeoTIFF projections
Fixed bug with illegal characters in import/export of GPX files 2.0.11 May 26 Ability to read Notices to Mariners directly within AngelNav without having to interact with the UKHO website
Improved usablity of Chart View Menu with larger type sizes
Added the option of 'Sign in with Apple' 2.0.10 Apr 19 Improved memory management when in continuous use with NMEA and AIS data for multi-week passages
Added In app purchase for Tidal data for British Isles for 2026 2.0.9 12/02/2025 Enhanced goto view
Enhanced note editing with rich text and multiple colours (iOS26 only)
Fixed layout issues with iOS26 2.0.8 10/28/2025 Fixed a bug in the display of certain Virtual AToNs which resulted in a large black circle obscuring other detail 2.0.7 08/10/2025 Added display of symbols for virtual Aids to Navigation (AToNs) received over AIS
Added ability to relay position data between devices (allows WiFi only iPad to receive location information from iPhone)
Fixed an issue with partial imports from large folders of stored charts (eg Antares charts)
Added display of the number of stored charts 2.0.6 07/21/2025 AIS enhancements including display of country of origin
Decoding of UN/LOC codes for AIS destinations
Support for AIS aids to navigation
Support for more NMEA messages for depth
Improved memory management 2.0.5 06/24/2025 The Chart information shows the last notice to mariners incorporated into the chart
Charts display a notification when a new notice to mariners is published
Improved handling of withdrawn charts
Fixed an issue with some GeoTIFF files that straddle the anti-meridian 2.0.4 05/18/2025 New capability to open GeoPDF files
New display of GPS information (for NMEA data)
Improved NMEA simulator
Fixed issue with iPhoneX occasionally not opening GeoTIFF files
Improved visibility of tracks
many improvements under the hood, including reduced memory usage 2.0.3 04/11/2025 Added chart coverage of the Pacific Ocean (SHOM folios FF4 and FF5)
Incorporated the latest data for the World Magnetic Model valid until the end of 2029
Added a link in the Chart information screen to the UKHO Notices to Mariners page
Fixed an issue with the lat and lon keyboard allowing too high a value of minutes in DMS mode 2.0.2 12/19/2024 Added tide data for 2025 to store
Fixed issue with simulation mode crashing when adjacent track points have the same timestamp
Changed layout of chart list buttons to improve workflow
Improved behaviour of Course to steer object - now allows multiple tidal vectors
Improved consistency of chart work objects
- iPadOS 18.0 tab view default 2.0.1 11/16/2024 New Tides module. Tidal heights and streams for waters of the United Kingdom and Ireland 2.0.0 09/13/2024 Fixed an issue preventing chart downloads when 24-Hour Time was set to off
Improved compatibility with SignalK servers
Fixed an issue with reading data from the Vesper Marine XB-8000 AIS Transponder
Added compliance with iOS 18.0 1.2.6 08/19/2024 Fixed an issue with the browse to chart folder function for iOS 15 users
Added support for remote notifications
Added a depth offset for use with incorrect NMEA data sources 1.2.5 06/06/2024 Fixed an issue with satellite charts created on devices with large screens
Fixed an issue with some newly purchased subscriptions showing as expired
Added instructions in the user guide for using OpenSeaMap charts 1.2.4 05/10/2024 Added a new Chart Finder for finding and loading charts graphically
Added a chart boundaries overlay to display other available charts
Added the ability to detect a GPS spoofing attack
Moved the NMEA simulator to the Extras tab
Fixed an issue whereby display of CPA information could sometimes cause a crash
Changed waypoint and route editing so that the + button goes directly to the edit screen
Fixed an issue with identifying charts that straddle the anti-meridian
Added a new instrument to display true wind direction (TWD)
Added the ability to import tracks
Added a new Data page to delete, backup and restore data
Added the ability to export a single route
Added a running total column when exporting a route to a passage plan
Added a filter to show only relevant AIS targets 1.2.3 04/01/2024 Added remaining Imray chart folios including coverage of the Mediterranean
Added new UKHO derived folios of the Atlantic islands and Atlantic coasts of Spain and Portugal
Added updated coefficients of the World Magnetic Model valid until 2025
Minor user interface improvements 1.2.2 02/15/2024 Added Imray charts (Caribbean folio) as a new in-app purchase
Added an NMEA simulator to allow demonstration of capabilities prior to purchase
Improved behaviour of recent charts menu
Added setting to limit memory use for large BSB files
Fixed issue with display of BSB charts with skew angles other than zero
Fixed bug with satellite charts covering an area which includes the anti-meridian
Improved compatibility with iOS17
Removed +/- buttons for subscription charts in store
Fixed bug whereby charts sometimes do not download on a second device 1.2.1 12/21/2023 A new instruments feature as an in-app purchase (displays wind, depth, heading etc if available)
Three new subscription folios covering the coasts of France using charts from SHOM
A new NMEA message console has been added to settings
Improvements in the recording and display of tracks
Additional format options for the display and entry of latitude and longitude
Race wizard improvements
Improved feedback for store purchases
Updated for iOS 17
Updated help file 1.2.0 09/18/2023 - Added a race wizard as an in-app purchase
- Added a new folio covering the coasts of Belgium and the Netherlands
- Added new progress bar when downloading charts
- Added the ability to mark charts as favourites and filter on them in the chart list
- Modified the goto button in the waypoint list to allow both goto and cancel
- Added a time value to the dead reckoning chart work
- Added activity indicators for incoming GPS and AIS information
- Fixed occasional crash when loading a chart
- Addressed crashes when loading very large NOAA charts
- The zooming out limit now adjusts itself to allow viewing of the whole chart on screen
- Added the ability to copy a route
- Expanded instant help to include the Routes tab
- Added import and export of routes
- Updated the help file 1.1.0 07/16/2023 Minor bug fixes 1.0.18 07/06/2023 Added setting to hide waypoints of inactive routes
Improved detection of data source changes
Modified waypoint delete dialog 1.0.17 05/16/2023 Fixed bug with GPX File connector changing source
Improved visibility of Chart Work menu near edge of screen
Fixed bug whereby turning on 'Button Shapes' in Accessibility made menus difficult to use
Added section on Waypoint locking to help file 1.0.16 05/02/2023 Fixed an issue with the order of subscriptions in the store
Made some minor changes to the user default settings
Changed the boat colour on loss of navigational data to make it more obvious 1.0.15 04/25/2023