# ylechelle/OpenUDID

[OpenUDID IS NOW DEPRECATED] Open source initiative for a universal and persistent UDID solution for iOS

Repository: https://github.com/ylechelle/OpenUDID
Canonical: https://ross.abutalabs.com/products/openudid
Language: Objective-C
License Family: other
Last push: 2018-01-20T01:15:01+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5482, "days_push": 3148, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2079, forks 425 (observed 2026-08-28T04:06:11.513219+00:00)

## What it is
OpenUDID is an open-source Objective-C library that provides a persistent, privacy-friendly replacement for Apple's deprecated UDID (uniqueIdentifier) on iOS, with ports to Android and Windows. It generates and shares a device-level identifier across apps via a pasteboard mechanism. The project is officially deprecated in favor of Apple's advertisingIdentifier.

## Use cases
- get a persistent device identifier on ios
- replace deprecated udid uniqueidentifier
- track installs across apps for analytics
- attribute ad clicks to downloads without using mac address
- respect user opt-out for device tracking

## When to avoid
- starting a new ios project — use ASIdentifierManager advertisingIdentifier instead
- need a supported, maintained identifier solution
- app store submission where deprecated tracking methods may be rejected

## Facets
- artifact type: library
- maturity: abandoned
- function: sdk, security
- domain: mobile-development, privacy
- platform: -
- tags: objective-c, device-identifier, udid, deprecated, analytics, ios, macos, android

## Member repositories
- ylechelle/OpenUDID (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:11.513219+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 2026-08-30T02:56:05.607892+00:00, confidence not recorded.
  - readme: https://github.com/ylechelle/OpenUDID (fetched 2026-08-28T04:06:11.513219+00:00, sha fae8e0f0d695)
- Data as of 2026-08-30T08:39:29.467469+00:00.