I co-develop the award-winning IPA system we use at 3138 (we use 10" Android Tablets, so it's a similar use case). Our system is an HTML5 webapp designed to be used as a strategy system, as opposed to an alliance selections aide.
The thread pre-CMP last year:
http://www.chiefdelphi.com/forums/sh...d.php?t=116017
We've overhauled the system pretty drastically both UI- and statistics-wise for this year - keep an eye on this board as we'll probably be doing an an annoucement in the coming week or two (we have a week one event this year which has definitely streamlined our development process!)
If concerned about manpower, our system this year is designed to use minimum 3 (up to 5) scouts plus a drive team dashboard tablet/laptop.
EDIT: Noticed your comment about them not having data. This is something you could accomplish with a 4G USB modem + Bluetooth PAN / Ethernet connections if that's a possibility for your team. Our team used that setup at both Crossroads and IRI (went as spectators) last year and it worked out.