Thanks for reaching out. We understand the need for a collage maker and perspective fix for the Windows version of Photoshop, but currently, we do not have them. Photoshop Express is just for editing and transforming photos on the go.
Photoshop Express is a mobile app for iOS and Android available in various app stores. It works with your mobile device's camera roll. The app is built for smartphone photography, and its editing tools are made for fast changes on your phone. It's ideal for applying quick edits like filters, overlays, and text and light leak effects. That's why a few features in the mobile device are not available on the Windows version.
However, we genuinely appreciate your feedback. We will try to incorporate it to make the software better.