# willowtreeapps/spruce-ios

Swift library for choreographing animations on the screen.

Repository: https://github.com/willowtreeapps/spruce-ios
Canonical: https://ross.abutalabs.com/products/spruce-ios
Language: Swift
License: MIT
License Family: permissive
Topics: animation, ios, framework, swift, design, spruce, library
Last push: 2024-03-18T17:16:37+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3578, "days_push": 898, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3427, forks 196 (observed 2026-08-28T04:08:03.989724+00:00)

## What it is
Spruce is a lightweight Swift library for choreographing multi-view animations on iOS screens. It provides UIView extensions to prepare and run coordinated animations like fade-in and expand across many views with simple timing control.

## Use cases
- animate multiple views on screen in a coordinated sequence
- add staggered fade-in animations to a list of UI elements
- choreograph complex multi-view animations for iOS prototypes
- make iOS screen transitions feel polished with minimal code
- synchronize view animations with sort functions and delays

## When to choose
- you are building an iOS app in Swift and want easy multi-view animation choreography
- you want a lightweight UIView-extension-based animation API
- designers request complex staggered animations that are tedious to hand-code

## When to avoid
- you need Objective-C support, which is not yet available
- you need cross-platform animations for Android or web
- you need advanced physics-based or gesture-driven animation systems

## Facets
- artifact type: library
- maturity: maintenance
- function: animation, ui-components
- domain: mobile-development, frontend
- platform: -
- tags: uikit, view-animations, choreography, cocoapods, carthage, ios, swift, mobile

## Member repositories
- willowtreeapps/spruce-ios (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:03.989724+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 2026-08-29T18:37:52.357811+00:00, confidence not recorded.
  - readme: https://github.com/willowtreeapps/spruce-ios (fetched 2026-08-28T04:08:03.989724+00:00, sha 77a506189a83)
- Data as of 2026-08-30T08:39:29.467469+00:00.