Now in beta

Translate any video.
Privately. Instantly.

Live subtitles & voice translation across 8 languages. Runs offline on your devices — no cloud, no upload, no subscription.

SR ∇ ✓

Join 2,400+ early supporters

Original

"I never saw it coming."

Subrelay · 中文

「我完全没料到。」

Offline-first translation

Your audio never leaves your local network.

How it works

From video to subtitles in four steps

Subrelay listens, understands, times, and displays — all on your own devices.

Any video

Browser extension captures audio from streaming sites, local files, or live events.

Local AI listens

The desktop companion runs speech recognition on-device. No audio is uploaded.

Real-time sync

Words are timed to the exact frame and translated while the video keeps playing.

Review & export

Save transcripts, adjust timing, and export subtitles in SRT or plain text.

Use cases

Made for every kind of video

From entertainment to learning to live events.

Streaming & shows

Dramas, anime, movies — watch in your language as soon as they drop.

Learning & tutorials

Coding, cooking, crafts — follow along without language barriers.

Global content

International creators, foreign news, and region-locked content made accessible.

Live & focused

Conferences, talks, and livestreams with precise real-time timing.

Phone meets desktop

Capture anywhere. Refine on the big screen.

Record a clip on your phone, get an instant local translation, then hand it off to your desktop for precise editing and batch export — over the same Wi-Fi, with zero upload.

On your phone

Clip capture, live voice translation, and a diary of moments.

On your desktop

Refine timing, batch translate, manage glossary, export clean files.

The real lock-in

Your glossary syncs both ways — change it once, it's live on every device.

Zero upload

Phone

Desktop

Same-Wi-Fi direct transfer · optional end-to-end encrypted cloud sync for members

Why Subrelay

The gap the closed-source tools left open

Local long-form video × offline zero-upload × zero-config across devices. Any single axis has competitors — all three at once is empty.

Zero per-use cost

Open-source models run on your machine. No token billing, ever.

Them: pay per character, forever.

Stays on your device

Subtitles never leave your local network by default.

Them: your text is uploaded to the cloud.

Native & light

A small desktop app that opens instantly and stays out of the way.

Them: browser tabs and heavy SaaS.

One calm design

A consistent neumorphic interface across phone and desktop.

Them: generic SaaS look.

Two markets, one account

WeChat Pay & Alipay at home, Stripe abroad — plans work everywhere.

Them: usually overseas-only.

Compliance-ready

Local-first keeps data in-region; cloud sync is auditable and optional.

Them: cross-border data flow.

Pricing

Free forever. Pay only for scale.

Local translation is free — you only pay for convenience, collaboration, and cloud sync.

Free

For casual viewers & learners

$0 / forever

✓10 min/day on mobile
✓Diary (limited entries)
✓Share cards (watermarked)
✓One language pair
✓Same-Wi-Fi transfer, zero upload

Get started

Pro

For daily learners

$9.99 /mo

✓Phone + desktop, unified
✓No daily limit
✓Unlimited diary
✓Clean exports (.srt / .ass / bilingual video)
✓Glossary & terminology

Choose Pro

Best value

Pro Yearly

For committed learners

$99 /yr

≈ 2 months free vs monthly

✓Everything in Pro, billed yearly
✓Phone + desktop, unified
✓No daily limit
✓Clean exports (.srt / .ass / bilingual video)
✓Glossary & terminology

Choose yearly

Dual-rail payments: Stripe overseas · WeChat Pay & Alipay in China. Mobile stores take 15–30%; desktop & web are tax-free.

Translate any video. Privately. Instantly.