I use Flighttrack Pro since years. Having it installed on several devices a synchronisation function was very useful, mainly I synced with iCloud. Why the new version (which we have to pay for) does not support sync is absolutely not understandable. Therefor I can give only 2 stars and hope, that the sync - function is in the pipeline. The app itselfes is fresh designed and good for use. P.S. Since today I have a lot of http errors. Other tracking apps dont have this problem.