Colin, I haven’t used it with the iOS app, though I don’t know why it wouldn’t work with it.

As for Simple location, you can pick and choose which posts it appears on. I suspect that David did’t want to reveal the location of this particular post (though perhaps he should have for demonstration/self-dogfooding reasons), so there isn’t one. I’ve been using it on PESOS posts from Instagram and OwnYourCheckin, which both transfer geo-data, for quite a while now and really love how it works as well as the flexibility it has (for being so simple). The recent improvements are really fantastic too.

If you want some examples, take a look at some of the individual posts in the streams at http://boffosocko.com/category/social-stream/instagram/ or http://boffosocko.com/kind/checkin/.