This article was published 6 years ago, therefore the contents of this post may be out of date.
Planguru is a free UI Kit for Sketch and Photoshop that you can use to get started with an event or planning app.
Planguru includes 18 beautifully designed screens and a bunch of components covering many necessities for an app of that kind: a calendar for scheduling events, a group chat, notification system and more.
