SubSmith: Transcribe Any Media. Study Any Language.

Transcribe your own media and study any language with editable, timestamped subtitles & transcripts in 99+ languages. All processed locally and privately on your computer for true immersion.

7-day free trial • No credit card

Why I Built This

I wanted to learn a language using the content I actually enjoy. I tried everything, subscription platforms like LingQ, sites like Animelon, and browser extensions like Language Reactor. Nothing quite worked. Either it was locked behind a subscription, had a limited library, or couldn't transcribe my own files.

So I built SubSmith: a desktop app that lets you use any video or audio file. Generate editable timestamped transcripts locally, turn them into your own study material, and process everything locally. Just your media and your learning.

Supported Languages

SubSmith generates subtitles and transcripts locally in 99+ languages. Here's a sample of commonly used languages (not exhaustive). See the complete list used by the underlying model here.

  • English
  • Spanish
  • French
  • German
  • Italian
  • Portuguese
  • Somali
  • Dutch
  • Swedish
  • Norwegian
  • Danish
  • Finnish
  • Polish
  • Czech
  • Hungarian
  • Romanian
  • Russian
  • Ukrainian
  • Serbian
  • Croatian
  • Greek
  • Turkish
  • Arabic
  • Persian
  • Hindi
  • Urdu
  • Bengali
  • Mandarin
  • Cantonese
  • Japanese
  • Korean
  • Thai
  • Vietnamese
  • Indonesian
  • Malay
  • Swahili
Show full 99+ languages

Additional languages are supported beyond those listed here.

Immersion For Less Than $0.15 Per Day

Start with a full-access 7-day free trial. Cancel anytime.

7-Day Trial

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  • Private Local Whisper AI
  • SRT & Text Export
  • Editable Timestamps
  • 99+ Language Support
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Yearly Pass

$40/ year

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Everything in Trial, plus:

  • Unlimited Active Immersion
  • Prioritized Feature Updates
  • Support Solo Development
  • All Future AI Models

Monthly Pass

$5/ mo

Flexible. Cancel anytime.

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  • Private Local Whisper AI
  • SRT & Text Export
  • Editable Timestamps
  • 99+ Language Support

Frequently Asked Questions

Everything you need to know about SubSmith

How does this help with language learning?

You get editable, timestamped transcripts in 99+ languages. Study with comprehensible input, build vocabulary from context, and practice with content you actually enjoy, whether that's telenovelas, K-dramas, anime, podcasts, or YouTube videos.

How does pricing work?

SubSmith offers a 7-day free trial with full access to all features. After the trial, choose a Monthly ($5) or Yearly ($40) plan to continue.

How accurate is the transcription?

More than good enough for studying. You'll spot maybe 2-3 mistakes in a 10-minute video with clear audio. Noisy recordings or thick accents need more editing, but nothing that kills the flow. The inline editor makes corrections feel natural, not like busywork.

How long does transcription take?

Usually takes about half the video's length, sometimes less. A 20-minute video processes in 5-15 minutes on most computers. For best accuracy when studying, the Large model is worth the extra wait (15-25 minutes). You can start studying while it works, or let it finish in the background.

What languages are supported?

SubSmith supports 99+ languages including Spanish, French, Japanese, Korean, Arabic, and more.

Does my data stay private?

Your media files are processed locally and never leave your device. For subscriptions, we store your email and name for account identification—Stripe handles all payment data securely. Read our full privacy notice.