Indie app developer ROSS released the skill on October 22. The repository says the demos were made entirely in code from templates, both the artwork and the motion. ROSS came up with the method while trying to animate the illustrations on their own app's onboarding and payment screens, and wrote in the launch post: “@rive_app is overkill. i just want my apps to feel alive.” Rive is a professional tool for building app animations.
Four days later, on October 26, the launch post had passed 166,000 views, and more people had saved it (3,343 bookmarks) than liked it (2,034). On the evening of launch day, a French-speaking developer added the skill to the coach mascot in their workout-tracking app and shipped it.
The skill includes 12 animator's principles (drive the whole scene from one clock, squash and then stretch back on landing, close a blink in about 110 milliseconds and open it in 190, and more), motion engines for React Native and SwiftUI, and a tool that measures the result frame by frame. There's no web template, but the docs say the same method works on the web. It's free (MIT license).
