PolySub
7-day Pro trial · no card

Understand every video—even when it has no subtitles.

Translate existing captions for free. Pro adds meaning-aware AI translation and creates captions from speech.

Start 7-day Pro trial →Continue with Free

200 AI credits · no card · no charge when it ends

The same video, both ways

Live Transcribe · EN → TH
So this stall has been here for forty years.ร้านนี้อยู่ตรงนี้มาสี่สิบปีแล้วนะ

Live Transcribe writes the caption from speech, then translates it.

How the trial works

Seven days, then it ends by itself.

  1. 1 · TodayNo card required

    Start Pro with nothing but the language you want to watch in.

  2. 2 · During the trial200 AI credits

    AI translation and Live Transcribe, unlocked for seven days.

  3. 3 · Day 7Returns to Free

    Nothing is charged. Instant translation keeps working, unlimited.

Then choose how long you want Pro.

Each purchase ends automatically. Nothing renews and there is nothing to cancel.

Free
No billing required
฿0forever

No account needed to start

Everything you need to understand a video that already has captions.

  • Unlimited Instant translation
  • Dual subtitles on any video site
  • Transcript · search · bilingual
  • Unlimited community subtitles
  • Sync across devices, themes & follows
Add to Chrome

Free is not a trial. It never expires.

Pro ✦Recommended
฿1,590/ year

Equivalent to ฿133/month

More of every video, with less effort — and nothing to cancel afterwards.

  • Everything in Free
  • 24,000 AI credits included — about 80h Transcribe or 22h GPT Live
  • AI translation — Fast / Balanced / Highest
  • Live Transcribe — captions when none exist
  • Warm themes ✿ ☾ ♡ ✦
  • Community Studio & export
  • No provider keys to configure
Start 7-day Pro trial →

200 AI credits · no card · no charge when it ends

Paid plans are not open yet. Free translation is available now, along with the 7-day Pro trial — 200 credits, no card.

Everything, side by side.

Included in both plans, or Pro only.

FreePro ✦
WatchingInstant translation of native subtitles✓✓
Dual subtitles — original + translation✓✓
Community subtitles & one-click apply✓✓
Transcript · search · bilingual✓✓
Settings & presets synced across devices✓✓
PolySub AIAI translation — included credits—✓
Quality choice — Fast / Balanced / Highest—✓
Live Transcribe — captions when none exist—✓
Style & communityWarm themes — Peach ✿ Lavender ☾ Strawberry ♡ Plum ✦—✓
Community Studio, export & advanced styles—✓

Watching

Instant translation of native subtitles
Free ✓Pro ✦ ✓
Dual subtitles — original + translation
Free ✓Pro ✦ ✓
Community subtitles & one-click apply
Free ✓Pro ✦ ✓
Transcript · search · bilingual
Free ✓Pro ✦ ✓
Settings & presets synced across devices
Free ✓Pro ✦ ✓

PolySub AI

AI translation — included credits
Free —Pro ✦ ✓
Quality choice — Fast / Balanced / Highest
Free —Pro ✦ ✓
Live Transcribe — captions when none exist
Free —Pro ✦ ✓

Style & community

Warm themes — Peach ✿ Lavender ☾ Strawberry ♡ Plum ✦
Free —Pro ✦ ✓
Community Studio, export & advanced styles
Free —Pro ✦ ✓

2,000 PolySub AI credits is about 20 hours of AI-translated video. Non-expiring top-ups are available inside Pro.

Nothing hidden in the small print.

Your account returns to Free automatically. Nothing is charged and no card is on file. Instant translation keeps working, unlimited.

Stop pausing for translations.

Seven days of Pro, 200 AI credits, and nothing to cancel.

Start 7-day Pro trial →200 AI credits · no card · no charge when it ends