Not exactly surprising. Not sure when it went, the last blog update (the only functioning subdomain http://blog.bluemars.com) is from 2013 and wikipedia stops there too. My client said it is an August 2016 build. You get some interesting errors when you load it now... including a database username and password for a computer on a local network somewhere. Likely wherever it was, it isn't switched on any more. Broken appstore version https://apps.apple.com/app/blue-mars-mobile/id417559429 Looking around I can't find anything past 2016. Seems they just quietly faded away.