Regional Jet 200 ER/LR (CRJ200)
Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Less Severe
Flight Crew Overcame Equipment Problem
Aircraft
While programming both the FMS and [tablet application] EFB; found that J110 appeared to be missing (it was present on the appropriate Jeppesen High chart).  Was only able to find the airway after zooming in to less than 6 mile range.  [tablet application] EFB needs to be much more complete regarding the marking of airways; both high and low enroute.  There are many examples of airway markings that do not appear until zooming in on the chart beyond a point that almost everything else becomes unviewable.  Additionally; the symbology being used; especially for VOR/VORTAC/TACAN are the same at any basic intersection.  This makes the potential for navigation error much greater.Additionally; the screen size with the iPad Mini is unacceptable; as it requires 'pinching and zooming' for just simple basic viewing of the associated approach chart/SID/STAR.  This condition is much less pronounced on the standard sized iPad screen.  I've had occurrences on every single segment flown where basic data; normally viewable on a standard navigational document; disappears from view because of the requirement to 'pinch and zoom' simply to make individual items viewable.
A CRJ-200 Captain reported his iPad Mini tablet Electronic Flight Bag (EFB) was difficult to use.