Having been a state school teacher for over 13 years following a curriculum is almost hard-wired into my approach to app development. So much so that I have to really consciously hold back to allow the fun and spontaneity that a creative project needs.
Klatoo's Science Adventure is based on the NEW Science National Curriculum for KS1 Year 1. We felt it needed to be done and it was great fun to make. We had a bundle of willing testers from my sons friends, once we made lots of adaptation to the user experience they loved it!
There are probably lots of good reasons developers are not targeting specific areas of the UK curriculum. The system is in a state of dramatic flux and many of the recent changes are likely to be undone by a change of government etc. Its also not going to be the cash cow that broader audiences could be (e.g. US). We are not trying to take over the world, we just want to use technology to support the learning of kids, and are starting with what we know! If you are an educator using our apps we would love to know what you think firstname.lastname@example.org Klatoo should land in the next 7 days!