# niedev/RTranslator

Open source real-time translation app for Android that runs locally

Repository: https://github.com/niedev/RTranslator
Canonical: https://ross.abutalabs.com/products/rtranslator
Language: Java
License: Apache-2.0
License Family: permissive
Topics: translator, bluetooth-le, realtime-translator, android-app, onnx, onnxruntime, sentencepiece, transformers, translation, nllb, whisper, mobile-app, android, offline
Last push: 2026-08-26T21:56:17+00:00

## Health v2 (maintenance only)
Score: 85/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 59, longevity 100
- inputs: {"age_days": 2347, "days_push": 7, "days_rel": 192, "gap_med": 55, "n_releases_24m": 6}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 10355, forks 938 (observed 2026-08-28T04:10:41.776153+00:00)

## What it is
RTranslator is a free, open-source, offline real-time translation app for Android that runs speech recognition (Whisper) and translation (Meta's NLLB) models locally on the phone. It supports multi-person conversation mode over Bluetooth LE, a walkie-talkie mode for quick two-person exchanges, and classic text translation.

## Use cases
- have a real-time translated conversation with someone who speaks another language
- translate speech offline without internet or subscription fees
- use bluetooth headphones for hands-free interpreted conversations
- quickly ask for directions in a foreign language with one phone
- translate text between languages on Android
- run whisper speech recognition and NLLB translation locally on a phone

## When to choose
- you need private, fully offline translation on an Android device
- you want multi-person conversation translation with Bluetooth headsets
- you want a free alternative to paid translation apps without API costs

## When to avoid
- you need translation on iOS or desktop platforms
- you need server-grade translation quality or very large language coverage
- your device lacks the resources to run local ML models

## Facets
- artifact type: application
- maturity: active
- function: speech-recognition, tts, machine-learning, llm-inference
- domain: mobile-development, android-tools
- platform: -
- tags: real-time-translation, offline-translation, bluetooth-le, onnxruntime, whisper, nllb, conversation-mode, walkie-talkie, natural-language-processing, localization, android, mobile

## Member repositories
- niedev/RTranslator (main) score 85

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:41.776153+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 2026-08-29T17:19:07.274133+00:00, confidence not recorded.
  - readme: https://github.com/niedev/RTranslator (fetched 2026-08-28T04:10:41.776153+00:00, sha ccdd00dfc43c)
- Data as of 2026-08-30T08:39:29.467469+00:00.