Terms, in plain words
Updated 29 September 2026.
This is a plain-words draft, not legal advice. It will be reviewed before DuoDub goes on sale.
What you buy
A licence key for DuoDub, the Chrome extension that lets two people watch one film, each in their own language and their own headphones. One key covers both windows. It shows on the page after you pay and comes by email, and you paste it into DuoDub once.
How long it lasts
“Lifetime” means for as long as DuoDub runs. That includes every streaming service we add later, at no extra cost. We can’t promise forever, and we won’t pretend to.
Try it first
Everyone can try DuoDub free for 3 days, with no card. You pay nothing unless you buy a key.
The price
The founding price is $9.99, paid once, for our first 500 supporters. After that, DuoDub will be $19 a year for new buyers. If you paid the founding price, you never pay again.
Refunds
Changed your mind? You get a full refund within 7 days of buying: write to support@duodub.app. Link, which takes the payment, can also refund you in some cases.
Who sells it
DuoDub is sold through Link, Stripe’s checkout, which is the merchant of record. Link takes the payment, sends the receipt and handles the tax. The price includes tax, and your card statement says LINK.COM* DUODUB. Link can’t take payments from Russia. Keys bought earlier through Gumroad keep working.
What you need
Google Chrome on a computer (Mac or Windows), your own subscription to the streaming service, and a plan that lets two screens play at once. DuoDub can’t add a language a title doesn’t have.
When a streaming service changes
Netflix and other services can change their players at any time. When they do, DuoDub may stop working until we update it. We fix it as fast as we can, but we can’t promise how fast.
What DuoDub does to your film
It presses the service’s own play, pause and seek, and picks which headphones each window plays through. It never records or copies what you watch, and never gets around copy protection. The details are on our privacy page.
Your key
Your key is for you and the people you watch with. Buying it for your parents is fine: the key works on their computer. Please don’t post it publicly or resell it.
Not affiliated
DuoDub is an independent project. It is not affiliated with, endorsed or sponsored by Netflix or any other streaming service. Service names belong to their owners.
Talk to us
Questions, refunds, or something not working: support@duodub.app. If these terms change, the date at the top changes too.