SeaNav UK & Ireland vs NavLink UK Usage & Stats

Marine Navigation App that turns your Apple Device in to a full function chart plotter. Features include; · Realtime GPS position plotted on Marine charts derived from UKHO data · AIS overlay when connected to compatible wireless AIS system · Waypoints and routes with full route editing and planning function · Position, COG, SOG, VMG, bearing, distance and ETA displays · Configurable chart layers · Tidal Streams (UK and IE) · HorizonView overlays navaid and targets onto iPad/Phone camera display · Automatic free chart updates included for 1 year · Weather buoy data · A-B chart ruler for quick and easy bearing and distance measurement · All UK & Ireland charts are included in the price · Optional in-app purchase of French, Benelux, Danish and German charts AIS Functionality When connected to an AIS system via a wireless NMEA link, NavLink will provide a real time overlay of AIS targets and CPA and TCPA alarms HorizonView Overlay chart and AIS objects on the iPhone or iPad camera image to create an augmented HorizonView display, that makes Nav-Aid and vessel identification simple and reliable Plan and sail routes Instant route and waypoint creation by tapping on screen. Route reverse function and route overview with inter-leg bearing and distance. Share your routes via dropbox and email with other users. Interfacing NavLink is compatible with all Digital Yacht's wireless NMEA devices such as the iAIS, WLN10, WLN10HS, NavLink, iNavHub and PilotLink that stream wireless AIS data to your Apple device. If you have a WiFi-only iPad or iPod you will need an external Bluetooth GPS receiver to enable navigation. Inexpensive 3rd Party units are available such as the Garmin Glo. Please note: Continued use of GPS running in the background can dramatically decrease battery life. Safety Notice NavLink (including the charts) is an aid to navigation. Only official government charts and notice to mariners contain all of the current information needed for safe navigation. This product's features cannot be relied on to be complete or accurate and may vary locally. It is the Captain's or Boat Owner's responsibility to use official government charts, notice to mariners, caution, sound judgement and proper navigational skill when operating their vessel and using this or any other Digital Yacht product. By purchasing this App, you are accepting the limitations of this app and the derived chart data. Third Party Licenses and Notices NavLink is developed by and © 2013 Electric Pocket Ltd. NOTICE: The UK Hydrographic Office (UKHO) and its licensors make no warranties or representations, express or implied, with respect to this product. The UKHO and its licensors have not verified the information within this product or quality assured it. Your purchase includes 12 months free updates to the included chart set. At the end of the 12 month period continued access to ongoing chart updates is available via an in-app purchase. Charts for other regions may also be added to your product via optional in-app purchase. Our in-app purchases are 1 year subscriptions, which automatically renew at the end of the subscription period unless auto-renew is turned off at least 24-hours before the end of the current period. Payment will be charged to your iTunes Account at confirmation of purchase, and will be charged for renewal within 24-hours prior to the end of the current period. Pricing for our 1 year UK Charts update subscription is £9.99. Subscriptions may be managed by the iTunes account holder and auto-renewal may be turned off by going to Account Settings after purchase. 
No cancellation of the current subscription is allowed during active subscription period. Our privacy policy and terms and conditions may be viewed here:- http://seanav.net/digitalyacht/privacy.php and here :- http://seanav.net/dyiostsandcs.php