# ReactiveCocoa/ReactiveViewModel

Model-View-ViewModel, using ReactiveCocoa

Repository: https://github.com/ReactiveCocoa/ReactiveViewModel
Canonical: https://ross.abutalabs.com/products/reactiveviewmodel
Language: Objective-C
License: MIT
License Family: permissive
Archived: true
Last push: 2018-06-02T12:32:48+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4827, "days_push": 3014, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1946, forks 255 (observed 2026-08-28T04:05:57.834028+00:00)

## What it is
ReactiveViewModel is an Objective-C library and documentation project for building Cocoa applications with the Model-View-ViewModel (MVVM) pattern on top of ReactiveCocoa. It provides reusable view model base classes and best-practice guidance for testable, platform-agnostic presentation logic.

## Use cases
- apply mvvm architecture to ios apps with reactivecocoa
- make view controller logic testable without ui automation
- share presentation logic between iphone, ipad, and mac
- implement ui state restoration using serializable view models
- move formatting and visibility logic out of view controllers

## When to choose
- you are maintaining a legacy Objective-C codebase already using ReactiveCocoa
- you want MVVM guidance and base classes for Cocoa apps

## When to avoid
- starting a new Swift project — use Combine, RxSwift, or SwiftUI instead
- you need actively maintained dependencies — the project has had no releases since 2018

## Facets
- artifact type: library
- maturity: abandoned
- function: state-management, ui-components
- domain: apple-ecosystem, mobile-development, desktop-applications, developer-tools
- platform: cpp
- tags: mvvm, reactivecocoa, objective-c, reactive-programming, data-binding, cocoa, ios, macos, swift

## Member repositories
- ReactiveCocoa/ReactiveViewModel (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:57.834028+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 2026-08-30T03:07:10.936605+00:00, confidence not recorded.
  - readme: https://github.com/ReactiveCocoa/ReactiveViewModel (fetched 2026-08-28T04:05:57.834028+00:00, sha 5ba9c21f37db)
- Data as of 2026-08-30T08:39:29.467469+00:00.