Cyber Ghost has reported the first bug I've seen for quite a while.
The problem is that the declination for stars between 0 and 1 degrees South is inverted (that is a declination of -0.8 is incorrectly reported as +0.8). This bug affects all versions of Pocket Stars and means that the position is incorrect for a total of 47 stars.
Fortunately, none of the 57 navigation stars are affected by this bug.