Shooters and Isnipe apps

[Wlhofer]

I have both Shooters and Isnipe ballistic apps and I am confused if I enter the same data into both apps example ; 3006 168 gr vld Berger bc .473 800 yards 2887 f/s and all the other info This is what they tell me
Path. Moa. WindD Vel energy. Time
Isnipe -183.74. 21.93. 45.4. 1360. 690 1.22
Shooters -168.7. 21.9. 41.8. 1481.8. 818. 1.165

Shouldn't the numbers be a lot closer one would think