Is your search scope too broad? Too many Pods maybe? I've never had an issue with project text search. The only time I've ever had that many problems in an iOS dev workflow was years ago when I was briefly running OSX through VMWare.
There's something else going on with your environment, it shouldn't be giving you this many problems.
Does xcode use Spotlight for search? I don't think it does. It clearly pounds the disk when searching but as Spotlight is optional and you can choose to not index various locations, relying on Spotlight for search (and being unable to search locations x, y and z) would mean that xcode would not find results in x, y, and z.
Picky Pint is native both ways. I've been making iOS apps professionally since 2011 (in a great consultancy that does native on both platforms in-house), so that part was straightforward. My co-founder and I both are software guys but we hadn't tried a native Android app before, and this was as good of an opportunity as any.
Yeah, if you take a photo of a menu displayed on a standard monitor you tend to get a screen door effect on the photo, which lowers accuracy. It does work much better on high density monitors (and other high density tablet and phone screens), though, and of course physical menus.