OP i was in the same boat, check this thread out
http://www.snipershide.com/shooting...228656-poll-most-complete-ballistics-app.html
after trying a few, very impressed with ballistic ae.
you can keep it as simple or as detailed as you want, and by adding some free google earth type map apps (map o meter / mapmeter / distance tool /measure your world / or simple distance tool) it's like adding a makeshift rangefinder. i put alot of woodchucks down this year with 1st round hits by getting distance indicators off these google map type apps when hunting - "that tree is 345 yards away, that ditch is 462 yards away, that rock is 279 yards away, etc." chucks pop up, i know my dope, pink mist a few seconds later.
you can load up local weather conditions that modify the #'s for current environmentals
the "heads up" display adds a quicker dope reference.
you can create files / data for individual loads / rifles / optics and pull up the individual combo at will. records individual range data, reload data, etc. there are a few default loads / ammo data you can use also, but nothing beats actual data from actual field data. even if returning to your favorite hunting stand or range, you can create a profile for your "spot", and pull it up the next time you return.
if you are gizmo orientated enough, to can get wind data at different points, load it up, and it gives you corrected bullet flight data
the "rangefinder" screen allows you to choose or even load from a file your reticle, allowing you to use the reticle to give an pretty accurate way of rangefinding your target too, as long as you know the size of the target. gives you lead and holdover points, even for SFP optics on whatever magnification.
with a compass or level app, it can calculate cosine adjustments.
there's a few other things you can do with it, basically everything you can possibly want to take with you (datawise) to the range and then some. just as long as your battery stays up.
it's the best $20.00 i've ever spent on anything.