This app was mentioned in 8 comments, with an average of 2.50 upvotes
I own 4 faction decks. But lately I have been using this
I'm not sure if something like this is frowned upon in this sub, and if it is let me know I'll delete this post asap.
Its basically a knock off Warroom. The interface is kind of clunky, but it has all the features of Warroom and a few extras. You have to find the data to import though as its not included.
If you have an Android device, you can check WHAC:
https://play.google.com/store/apps/details?id=com.schlaf.steam&hl=es_419
You have to download the card data from the forum, and its data is community driven, so it may have some mistakes.
And it's Open Source, so if you have the expertise, you can help to improve it: https://github.com/schlaf/WHAC_by_slaforet
If money is limited, I wouldn't waste money on War Room. WHAC is an excellent, free alternative. The only (small) downside is that you have to go to their forum after installing to get the data files.
I kind of agree about the graphics not being needed.
However if they don't have them, the app has nothing that a 3rd party free one has. They can use their copyrighted art as a unique selling point.
Have a look at WHAC. It's an open source version in Java. Has most of everything except the fancy art GUI.
Their code is here. I had a very quick look in the repo (so the totals could be the wrong ones as I added the wrong thing) but it's about 40K lines of Java for the core functionality, not counting the GUI and and data. It's Android only and Android Java won't won't run unmodified on iOS (or even Windows).
If you want to work on a squad builder, I'd just join their project and help port it to iOS/Windows.
If Android, W.H.A.C. (in the play store) is free (open source free: not even any adverts) and has all the data plus battle damage tracking. It's also faster than war room, as it lacks the graphics, and it has a mobile-friendly UI.
WHAC is open source and he's said he's OK with people porting it. It's java so shouldn't be that hard.
Code: https://github.com/schlaf/WHAC_by_slaforet
Forum: http://whac.forumactif.org/
App: https://play.google.com/store/apps/details?id=com.schlaf.steam&hl=en
It has all the unit data cards and rules including tier lists, and does army list building. The UI is better than warroom, but it does not have the artwork from the cards (which means it's also lightning fast).
I use https://play.google.com/store/apps/details?id=com.schlaf.steam It's great!!