Is there a photo or drawing app with a good paint-bucket type function?

[ganyuehan]

Does anyone know of an app with a good color filler or paint bucket app in which you can adjust the transparency and area filled in? I'm looking for something similar to t photoshop or the old Photoimpact paint bucket features.

 

[twerppoet]

Both ArtRage and ArtStudio have a fill tool. A quick test showed ArtRage's tool doing a better job (less edge anti-aliasing artifacts), but that might have just been my settings.