I have been an advocate of SEAiq for a couple of years. I have also been a user of Coastal Explorer for probably 10 years. CE is one of the only products still forcing me to support a Windows system (Vista is good enough), which completely sucks (except for one annoying sideline from Garmin). Let me start by saying, for the record, "I have no personal or financial interest in SEAiq or Rosepoint." I have been a beta tester of SEAiq on iOS, on the Android and on my Mac for OS X. SEAiq is going to replace CE for me, probably within the next year, certainly the next time Rosepoint comes out with a fee upgrade. I have an article on my website on SEAiq, here: https://gilwellbear.wordpress.com/category/boat-technical-topics/computing-aboard/seaiq-nav-app-on-ipad/ <https://gilwellbear.wordpress.com/category/boat-technical-topics/computing-aboard/seaiq-nav-app-on-ipad/>. Every much in the same way as CE, SEAiq is a fully-functional Nav App. Because it runs on many computing platforms and operating systems - including tablet and PC OSs - with the same user interface, it has only one user interface to learn regardless of platform. Yes, these programs do have significant learning curves, so having to climb that curve only once is very helpful. The SEAiq developer, Mark Hayden, is very responsive to support requests. CE, on the other hand, not so much. I have had problems with CE that have been outstanding for months; I have one now that's almost a year old. And CE tech support (Steve Hodges) while extremely knowledgeable, either can't or doesn't follow-up on niggling issues at all well. And by the way, the Android environment - it turns out - is a very complex developer environment. The various hardware manufacturers of Android devices implement hardware functions differently, which greatly complicates development of sophisticated apps like SEAiq. Bottom line: SEAiq compares favorably to CE feature-for-feature. SEAiq runs on all OS platforms; CE is limited to Windoz. Both can accept live data feeds from NMEA0183/N2K-based nav equipment. Both use free NOAA and USCOE charts in the US. Chart sharing across systems is a severe weakness with CE. SEAiq tech support is more timely. We'll have to see how the cost points compare as that market stabilizes. For me, support for the Mac is a game changer! And for tablets, SEAiq is definitely a better mousetrap... Jim Peg and Jim Healy aboard Sanctuary, currently at Charlotte Harbor, Punta Gorda, FL http://gilwellbear.wordpress.com <http://gilwellbear.wordpress.com/> Monk 36 Hull #132 MMSI #367042570 AGLCA #3767 MTOA #3436