# zalando/SwiftMonkey

A framework for doing randomised UI testing of iOS apps

Repository: https://github.com/zalando/SwiftMonkey
Canonical: https://ross.abutalabs.com/products/swiftmonkey
Language: Swift
License: MIT
License Family: permissive
Topics: testing
Archived: true
Last push: 2022-10-21T12:50:00+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3571, "days_push": 1412, "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 1935, forks 173 (observed 2026-08-28T04:05:56.981458+00:00)

## What it is
SwiftMonkey is a Swift framework for randomised monkey testing of iOS apps, generating random user input events through Xcode's UI testing framework to stress-test apps and surface rare crashes. Its companion SwiftMonkeyPaws visualises the generated touches so crashes can be traced back to the events that caused them.

## Use cases
- find rare crashes in an iOS app that can't be reproduced manually
- stress-test an iOS app with randomised touch input
- reproduce memory leaks that require lots of UI interaction
- visualise random touches during UI testing to debug crashes
- add fuzz-style randomised UI testing to an Xcode test target

## When to choose
- you want randomised monkey testing integrated into Xcode's UI testing framework
- you need to hunt down rare, hard-to-reproduce crashes or leaks in an iOS app
- you want visualisation of generated touch events while stress-testing

## When to avoid
- you need deterministic, scripted UI tests rather than random input
- you're testing Android or non-iOS platforms
- you need a maintained, actively developed solution - the project sees only occasional releases

## Facets
- artifact type: framework
- maturity: maintenance
- function: testing, e2e-testing, fuzzing
- domain: testing, mobile-development, developer-tools
- platform: -
- tags: monkey-testing, randomised-ui-testing, stress-testing, xcode-ui-testing, crash-reproduction, swift, ios, mobile

## Member repositories
- zalando/SwiftMonkey (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:56.981458+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 2026-08-30T03:08:28.216646+00:00, confidence not recorded.
  - readme: https://github.com/zalando/SwiftMonkey (fetched 2026-08-28T04:05:56.981458+00:00, sha e8f212be09ec)
- Data as of 2026-08-30T08:39:29.467469+00:00.