This App UI set has 24 (12 Sign in + 12 Sign up) UI screens in single PSD file.
PSD file is well organized with grouping and layers makes it easy to customize.
You can easily change pictures by double click on picture layers. (Double click on layer, paste your picture above it, and save. That set)
You can export icons easily as all icons name starts with “ic_” so you can easily find it and export in your custom size. As all icons are vector, they are expandable without lose of quality of icons.