RadarBox24.com and AirNav RadarBox (the hardware system) are completely different solutions.
RadarBox24.com is our jump to the mobile platforms (browser, tablets, phones) while AirNav RadarBox hardware is for users who want a different experience: have their own ADS-B receiver, their own antenna, their own system.
Both solutions will co-exist and we are planning some even great news for the months for both. RadarBox Windows client software development hasn't stopped and we have some great ideas on our to-do lists. Who knows about the hardware... :-)
Regarding data sharing: RadarBox client software retrieves aircraft photos and database information from AirNav Systems server, forever (without any time limitation), for free. The data sharing process doesn't use significant bandwidth and has to be seen as a way to compensate for the lower and high quality solutions we've been developing. The same RadarBox system used by thousands of aviation enthusiasts is being used by major aerospace companies, airlines, airports. It has even been used on the Boeing 787 project. There is a cost for all this and the sharing of data by 95% of the RadarBox units sold helps us developing new features for all.
Anyway any user is totally free to disable data sharing - if you don't agree with it, don't share.
Also note that over 100 RadarBox were deployed all over the world, since March, with the sole intention of increasing our network coverage.
RadarBox24.com is still in its very early stages and we are still deciding internally on what to do with it commercially. Fortunately the technical comments we have received are great which make us extremelly happy. It is still in beta testing meaning problems still exist and are being corrected.
As usual we are totally open for your feedback - just send us a PM, email or reply on the forum.