You don't need an animation library to add a simple effect to your SwiftUI app. Create it yourself with SwiftUI. This repo inspires you to add helpful and expressive SwiftUI animations like loading/progress, looping, on-off, enter, exit, fade, spin, and background animations to your next project. The repo also contains tremendous spring animations.
An open source catalog, under MIT License, containing components, controls, effects, styles, layouts, containers, modifiers and accessibility elements you can use to develop SwiftUI Interfaces in iOS and iPadOS.