Download
Spring is a delightful animation library for iOS that turns complex Core Animation sequences into simple, declarative presets you can trigger with a few lines of Swift. It exposes a large set of ready-made animations—springy pops, fades, slides, morphs, and attention-grabbers—so designers and developers can prototype polished interactions rapidly. Thanks to Interface Builder support (via inspectable properties), many animations can be configured visually and previewed live, shortening the design-implementation loop. Under the hood, Spring abstracts timing functions, damping, velocity, and chaining so you get natural motion without juggling dozens of CAAnimation parameters. You can sequence or group effects, apply them conditionally, and reuse presets across views to keep a consistent motion language in your app. The overall philosophy is to make delightful motion accessible: even if you’re not an animation expert, you can ship interactions that feel crisp, modern, and on-brand.
Features
- A wide range of built-in animation styles (e.g. shake, pop, morph, squeeze, fall, etc.)
- Support for chaining animations (animate then animate to next)
- Control over animation properties like force, duration, delay, damping, velocity, repeat count, scale, etc.
- Support via Storyboard/Interface Builder and code-based methods
- Allows setting different animation curves (spring, linear, easeIn, easeOut, easeInOut)
- Autostart or autohide behaviors for animations in certain contexts (e.g. UI appearing)
Project Samples
