Brendan – thanks for the thoughtful response! Just to clarify, I don't want it to use any photos from my photo library, I'm fine with it pulling from Flickr. I just would like it if it was able to do so, and then make that a rotating walpaper. I know that is restricted by Apple.

AS for the no slideshow and doing one thing and doing it well, I think that's a sound principle. It just doesn't fit my individual taste – I don't want to have to shake the phone or do anything really to rotate / add images. I'd like the app to do it for me …

my name's Brendan Dawes and I'm the creative director here at magneticNorth, creators of the Biscuit Tin iPhone app.

Thanks for the lovely mention on your blog – much appreciated. I thought though I'd just respond to the two main points you've set out.

Wallpaper – great idea and we'd love to do this, bit apps run in what's called a “sandbox” meaning that they can't interact with the core iPhone interface. Apps are self contained applications so there's not way to alter the functionality of the phone to get a random wallpaper when you shake. That (at the moment) would be an Apple job. Also, presently in iPhone 2.0 there is no way we can use pictures in a random fashion from the phones own photo album, as this would require having to “look into” the phone photo album and get a list of all the photos and the mix em up. Because of the “sandbox” approach, third party apps can't do that. But hopefully in 3.0 this might be possible, so in a future version Biscuit Tin would shuffle not just Flickr photos but on phone photos.

As your other point about viewing as slideshow this is really outside of the remit of Biscuit Tin. We felt it was important when developing the app to have it “do one thing, one thing only, and do it well”. Otherwise it starts to add complication and we wanted this to be a very clear, simple idea that people understood very easily. But who knows, we may develop a random slideshow app in the future.

Thanks again for the comments – all this stuff helps us to iterate the product to be better.

Bren.