I have done some research on Speed Camera warning systems for Android users and came across Trapster and Speed Traps (done by a company called Arobs, if I recall correctly). The second one has an offline feature, which is kind of appealing to me, as staying online all the time is kind of expensive in Romania. Trapster doesn't seem to offer this feature.
Has any of you used Speed Traps? If so, are the warnings reliable?
Any opinions you might have on these apps would be greatly appreciated.