gerhard - it is pretty normal in Star Traders that you will "master" a difficulty and not find it challenging anymore as you learn the ropes. Time to upgrade your Difficulty Level and you'll find the game harder and have to use more of the game and your wiles to survive!
Also, keep in mind that normal is not the "normal" difficulty in terms of what the creator wants you to play, that's insane.
But yes, like fallen said, you should be moving up a difficulty level if you find it too easy. A lot of the long-term ST players tend to play on crazy, hard, or insane. Very few of us (except for starfixer ) play impossible regularly, most of us dip into it now and again for a fun slap in the face though!
I don't have an iOS device, but a friend of mine does. I've got him hooked on ST, so it's good to see any kind of progress happening on that front.
Yep was flying it got the Vegas which got me the alien which left me unkillable in the game just spoilt all the fun after that. Went full pirate looted every ship I came across got wealthy really quickly and wa bored so a started another game.