# AugustRush/Stellar

A fantastic Physical animation library for swift

Repository: https://github.com/AugustRush/Stellar
Canonical: https://ross.abutalabs.com/products/augustrush-stellar
Language: Swift
License: MIT
License Family: permissive
Topics: curve, animation, physical, uidynamics, swift-3, ios
Last push: 2019-07-31T06:37:32+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3752, "days_push": 2590, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2943, forks 227 (observed 2026-08-28T04:07:31.113869+00:00)

## What it is
Stellar is a Swift physics-based animation library for iOS built on top of UIDynamics, offering friendly chainable APIs for view and layer animations. It supports gravity, snap, attachment, and push animations plus a wide range of easing curves.

## Use cases
- add physics-based animations to iOS views
- create spring and gravity effects in Swift
- chain multiple animations with easing curves
- animate UIView properties like position and color
- build bounce and elastic UI effects
- replace UIDynamics with a friendlier API

## When to choose
- building an iOS app in Swift that needs natural, physics-driven motion
- you want chainable animation APIs with many easing options
- you prefer a lightweight library over full animation frameworks

## When to avoid
- targeting platforms other than iOS
- you need actively maintained Swift 5+ or SwiftUI support
- you need cross-platform animation tooling

## Facets
- artifact type: library
- maturity: maintenance
- function: animation, ui-components
- domain: mobile-development, graphics
- platform: -
- tags: uidynamics, physics-animation, chainable-api, easing-curves, cocoapods, carthage, ios, swift, mobile

## Member repositories
- AugustRush/Stellar (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:31.113869+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:32:55.119123+00:00, confidence not recorded.
  - readme: https://github.com/AugustRush/Stellar (fetched 2026-08-28T04:07:31.113869+00:00, sha 8d112ca2862e)
- Data as of 2026-08-30T08:39:29.467469+00:00.