UI Pixels is a gallery of free PSD's and Sketch app resources that you can download and use freely.
Marketplace App Sketchapp. You can easily use and edit the design. Designed and released by Kishore
App Design, Figma Resources, Sketch App Resources
Adobe XD Resources, App Design, Free PSD
App Design, Figma Resources, Free PSD
Free PSD, UI Kits
App Design, Free PSD