Everything You Need to Reach a Global Audience
From professional content creators to educators and businesses, LinguaDub's feature set is designed to make multilingual communication effortless and authentic.
Voice Cloning Technology
LinguaDub's neural voice matching captures your pitch, resonance, cadence, and speaking style. Every dubbed output sounds authentically like you — not a robotic text-to-speech engine.
Demucs Audio Separation
Powered by the state-of-the-art Demucs model (originally from Meta Research), LinguaDub cleanly isolates your voice from background music, crowd noise, or ambient sound before any AI processing begins.
11-Language Support
Dub into Spanish, French, German, Japanese, Korean, Chinese, Portuguese, Arabic, Hindi, Italian, and Russian. Comprehensive language coverage across every major global market.
On-Device Privacy
Your voice never leaves your device. All AI inference runs locally — no cloud uploads, no servers processing your personal recordings, no third-party data sharing.
Fast Processing
Optimized for modern mobile hardware. Short recordings process in seconds. Longer content processes in the background so you can continue using your device.
Background Music Preservation
Your background track stays untouched. Only your voice is swapped — meaning your original music, sound effects, and ambient audio remain perfectly intact in the final dubbed video.
Record or Import
Record directly in the app or import existing video and audio files from your camera roll. LinguaDub works with the content you already have.
One-Tap Export
Export dubbed audio or complete video files ready to upload directly to YouTube, TikTok, Instagram Reels, or any platform. Optimized file sizes for social media.
Lip-Sync Awareness
The dubbing engine adjusts speech rate and phrasing to maintain natural pacing aligned with your original video timing — reducing jarring mismatches between audio and visual.
11 Languages. One Voice. Unlimited Reach.
Every language below is supported in both the Free and Pro tiers (Pro offers unlimited minutes). LinguaDub adds new languages continuously.
Combined, these 11 languages cover approximately 4.5 billion native speakers — giving your content the potential to reach an audience more than 4× larger than English alone.
The Technology Behind Your Voice
LinguaDub's pipeline is a carefully engineered sequence of AI models that work together to produce natural, high-fidelity dubbed output.
1. Demucs Audio Separation
Your recording is first processed by the Demucs source-separation model. Demucs decomposes the audio into isolated stems: voice, background music, percussion, and ambient noise. Only the voice stem moves forward — everything else is set aside for later recombination.
2. Voice Profile Extraction
The clean voice stem is analyzed by a neural voice encoder that extracts a compact voice embedding — a mathematical fingerprint of your unique vocal characteristics. This embedding captures pitch range, speaking rate, formant frequencies, and timbre without storing any raw audio.
3. Speech Recognition and Translation
Your clean speech is transcribed using an on-device automatic speech recognition (ASR) model. The transcription is then semantically translated into the target language, preserving meaning, idioms, and natural phrasing rather than performing word-for-word literal translation.
4. Neural Text-to-Speech with Voice Matching
The translated text is synthesized into audio using a neural TTS model conditioned on your voice embedding from Step 2. The result is speech in the target language that inherits your vocal characteristics — your tone, your energy, your rhythm.
5. Audio Recombination
The newly dubbed voice audio is blended back with the preserved background stems from Step 1. Timing is adjusted to maintain synchronization with the original video. The final output is a complete, fully dubbed media file ready for export.
LinguaDub vs. Rask AI, ElevenLabs, and HeyGen
Cloud-based dubbing tools can cost $22–$50 per month and require uploading your content to third-party servers. Here's how LinguaDub compares on the features that matter most.
| Feature | LinguaDub | Rask AI | ElevenLabs | HeyGen |
|---|---|---|---|---|
| Voice preservation (sounds like you) | ✓ Yes | ~ Partial | ✓ Yes | ✗ No |
| On-device / no cloud upload | ✓ Yes | ✗ Cloud only | ✗ Cloud only | ✗ Cloud only |
| Free tier available | ✓ Yes | ~ Trial only | ✓ Limited | ~ Trial only |
| Monthly cost (paid tier) | Coming Soon | $24/mo | $22/mo | $24/mo |
| Mobile app (iOS) | ✓ Yes | ✗ Web only | ✗ Web only | ✗ Web only |
| Background music separation | ✓ Demucs | ~ Basic | ✗ No | ~ Limited |
| Languages supported | 11+ | 130+ | 29 | 40+ |
| Account required | ✗ No account | ✓ Required | ✓ Required | ✓ Required |
Comparison based on publicly available information as of June 2026. Competitor features subject to change.
Frequently Asked Questions
Does LinguaDub really preserve my voice when dubbing into another language?
Yes. LinguaDub uses neural voice matching technology to extract the unique characteristics of your voice — your pitch, cadence, and timbre — and applies them to the dubbed output. The result sounds like you speaking the target language, not a generic TTS voice.
What languages does LinguaDub support?
LinguaDub supports 11 languages: Spanish, French, German, Japanese, Korean, Chinese (Mandarin), Portuguese, Arabic, Hindi, Italian, and Russian. More languages are added regularly with each app update.
What is Demucs and why does LinguaDub use it?
Demucs is a state-of-the-art audio source separation model originally developed by Meta Research. LinguaDub uses Demucs to cleanly separate your voice from background music, ambient noise, and other audio — ensuring the AI processes only your voice for the highest-quality dub.
Does LinguaDub upload my audio to the cloud?
No. LinguaDub is built with on-device processing as a core principle. Your voice recordings and personal data are never uploaded to external servers. All AI processing happens locally on your device using Apple's CoreML framework.
How does LinguaDub compare to Rask AI or ElevenLabs?
Unlike Rask AI and ElevenLabs, which require cloud uploads and charge $22–$24/month for professional use, LinguaDub offers on-device voice dubbing for free. LinguaDub uniquely preserves your natural voice characteristics rather than substituting a stock voice — a key differentiator for content creators.
Can LinguaDub handle background music in my videos?
Yes. The Demucs audio separation engine isolates your voice from any background audio before processing. Your background music remains intact in the dubbed version while only your spoken voice is translated and re-synthesized into the target language.