When I mentioned using apps to support the learning of my AS class the response from staff was mixed, from a 'nice idea but they aren't allowed phones in class', to some proper enthusiasm from senior management.
Although many UK primaries are embracing the touch screen revolution Secondaries are in a very different place with most state schools yet to have purchased a single ipad. There are many reasons for this, primaries are smaller which in my opinion allows change at a more rapid pace, apps for younger children are just easier to make, (even we succumbed to the phonics/ handwriting lure!) and initiatives do tend to roll up from KS1. Its not just money, ipads are expensive but there is money in the system and there is enormous potential for social media to help children under the pupil premium budget.
There is some fear within the profession of technology replacing the teacher and this can be a real blocker. We will always need teachers but we could be making better use of technology!
If your school is not yet ipad'ed up do an audit of the classes technology resources at home and try an experimental lesson, students can share whet they have and it might just be the spark your school needs.