# googlevr/cardboard

Open source Cardboard SDK and samples

Repository: https://github.com/googlevr/cardboard
Canonical: https://ross.abutalabs.com/products/cardboard
Language: C++
License: NOASSERTION
License Family: other
Last push: 2026-05-28T20:56:47+00:00

## Health v2 (maintenance only)
Score: 84/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 84, release rhythm 74, longevity 100
- inputs: {"age_days": 2527, "days_push": 97, "days_rel": 97, "gap_med": 77, "n_releases_24m": 10}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1581, forks 273 (observed 2026-08-28T04:05:07.040705+00:00)

## What it is
Google's open-source Cardboard SDK for building Virtual Reality experiences on Google Cardboard viewers. It provides motion tracking, stereoscopic rendering, and viewer button interaction for Android NDK and iOS apps.

## Use cases
- build a VR app for Google Cardboard viewers
- add stereoscopic rendering to a mobile game
- implement head motion tracking on Android and iOS
- handle the Cardboard viewer button input
- scan QR codes to get Cardboard viewer device parameters

## When to choose
- you want to target Google Cardboard viewers on Android or iOS
- you need a lightweight, open-source mobile VR SDK
- you want to add VR mode to an existing mobile app

## When to avoid
- you need VR for standalone headsets like Quest or Vive
- you target platforms other than Android or iOS
- you need modern 6DoF AR/VR features beyond Cardboard's capabilities

## Facets
- artifact type: library
- maturity: active
- function: graphics, sdk, simulation
- domain: mobile-development, cross-platform
- platform: cpp
- tags: vr, cardboard, stereoscopic-rendering, motion-tracking, virtual-reality, game-development, android, ios, mobile

## Member repositories
- googlevr/cardboard (main) score 84

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:07.040705+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 2026-08-30T03:56:33.462505+00:00, confidence not recorded.
  - readme: https://github.com/googlevr/cardboard (fetched 2026-08-28T04:05:07.040705+00:00, sha b3e0b578c23c)
- Data as of 2026-08-30T08:39:29.467469+00:00.