Whollet (https://whollet.io/) is a comprehensive crypto wallet UI kit we created as a way to give back to the blockchain community. Our team from MVP Workshop gathered the best practices (some of which were developed by us) for you to use and customize freely. You may recognize many UI elements, as many projects such as Coinbase, Argent, Celsius, and others are using similar information architecture and interaction patterns.
In short, Whollet is modern, clean, and easy to implement UI kit, ready to be used in your next crypto wallet project. It supports both Android and iOS and is available for download in Sketch and Figma.
Download it here - https://whollet.io/