Language Reactor Pricing (2026): Is It Free? Is Pro Worth It?

Language Reactor is free to use, with an optional paid upgrade called Pro. The free mode adds dual subtitles, a click-for-definition dictionary and playback controls to Netflix and YouTube in desktop Chrome. Pro, billed monthly, every three months or yearly in your local currency, adds machine translation on Netflix, word saving across its features and an enhanced AI model.

Current Pro prices are in the table above, checked on October 30, 2026. They vary by country, so confirm yours on Language Reactor's Pro page before you pay. We make Lingosive, a competing dual-subtitle extension, so every Language Reactor detail below comes from its own Pro page, FAQ, help pages and Chrome Web Store listing, all checked that day.

How much does Language Reactor Pro cost?

Language Reactor Pro, called Pro Mode on its site, is a subscription with three billing periods: one month, three months or one year. In every country we checked, the yearly plan works out cheapest per month and the three-month plan sits in between, so a year only pays off if you're sure you'll keep using it.

Prices depend on your country. The checkout is run by Paddle, a payment company, and the Pro page shows the amount in your local currency. In the countries we checked that charge VAT, including the UK, Germany and Turkey, the price shown already includes it. The Pro page also offers a Bitcoin payment with no recurring charge.

The subscription renews automatically until you cancel. One subscription covers the whole product: according to the FAQ, Pro works on Netflix, YouTube and the LanguageReactor.com website, including its flashcards and text mode.

Be careful with prices you find in older reviews. Several third-party articles still quote figures that don't match what the Pro page shows today. The name has changed, too: the extension launched in 2018 as Language Learning with Netflix and became Language Reactor in March 2021, when its Netflix and YouTube extensions merged. It's made by Dioco, not by Netflix.

Language Reactor free vs Pro: what's included?

The free mode gives you dual subtitles, a dictionary and basic AI help on Netflix and YouTube. Pro adds machine translation on Netflix, saving words anywhere and a stronger AI model. The homepage says Language Reactor is "already packed with great free features," and here is how the two modes compare, based on its Pro page and FAQ:

	Free mode	Pro
Second subtitle line on Netflix	The subtitle tracks Netflix provides	Adds machine translation, plus speech recognition on every audio track, including dubbed ones
Saving words and phrases	Only while using PhrasePump	Anywhere in Language Reactor; saved words are highlighted and can be exported to Anki
Lexa AI dictionary	A basic AI helper	An enhanced model with broader knowledge
Lexa AI chat	Five questions a day when signed in (since September 2026)	No daily question cap
Aria chat companion	Chat in the language you're studying	Remembers your conversations; you can view and edit its memories
Netflix and YouTube in desktop Chrome	Yes	Yes
Disney+, Prime Video or a phone app	No	No

The Pro page doesn't list the click-for-definition dictionary, playback controls such as auto-pause after each subtitle, or support for 40+ languages with transliterations among Pro's extras, and the FAQ describes Pro as mainly machine translation and word saving, so these come with the free mode. The homepage also lists books and imported web pages, a media file player and FSI/DLI drills, without marking which of them need Pro.

A few details sit outside that table:

• YouTube: the October 2026 extension update added enhanced speech recognition on YouTube for Pro users, with cleaner lines, accurate timing and a translation matched to every subtitle.
• Quota: machine translation has a daily quota. The FAQ says you can watch about five hours of new, previously untranslated content a day, and the same quota covers exporting subtitles.

Where does Language Reactor work?

Language Reactor works on the Netflix and YouTube websites through a Chrome extension for Windows and macOS computers. Its FAQ answers "Do you support Disney+/Amazon Prime/Android/etc?" with "We do not support these platforms yet, but might in the future." HBO Max isn't among the sites it lists, and we found no official Firefox or Safari version.

There's no official Language Reactor app for iPhone, iPad or Android either. Its homepage says it works on phones and tablets, and that refers to its website: you can open it in a mobile browser and add it to your home screen, but Netflix is marked "Desktop Only!". App Store apps with Language Reactor in their names come from other developers, not from its maker, Dioco, so their prices aren't Pro prices. We cover the details in Language Reactor on Android and iPhone.

Is Language Reactor Pro worth it?

Pro is worth it if you already study with Language Reactor on Netflix and keep running into the free mode's limits. It isn't worth it if what you're missing is Disney+, Prime Video, HBO Max, a phone app or Firefox and Safari support, because Pro doesn't change where Language Reactor runs: its FAQ says one Pro subscription covers Netflix, YouTube and the LanguageReactor.com website.

Pro makes sense if you:

• watch Netflix shows with no subtitle track in your language, or dubbed versions, and want Pro's machine translation or speech-recognition subtitles;
• want to save words while you watch and review them later, in Language Reactor or in Anki;
• use Lexa AI chat every day and hit the five-question limit, or want Aria to remember your conversations;
• want to support a tool that has been around since 2018 and shows 2,000,000 users on the Chrome Web Store.

The free mode is likely enough if the Netflix shows you watch already have subtitles in your language and you mainly want two lines, a dictionary and auto-pause.

If you're unsure, start with the free mode. If your account is offered a Pro trial, the FAQ says it ends by moving you back to the free mode rather than charging you.

What are the alternatives to Language Reactor Pro?

If you need a platform or a phone app that Language Reactor doesn't offer, a different tool may fit better. We make one of them, so weigh this section accordingly.

Lingosive adds dual subtitles to YouTube, Netflix, Prime Video, Disney+ and HBO Max in Chrome, Edge, Brave and other Chromium browsers on a computer. On the free plan too, the second line is a machine translation into your language, so you get two languages even when a show has no subtitle track in yours, though it can differ from the platform's own translation. Dual subtitles and word translation work without an account.

With a free account, you can save up to 100 words and phrases, get 10 AI word explanations a day and look up three different words or phrases a day in Word in Film, which plays short clips from movies, TV shows and other videos where they're said, in English, Spanish, French, German or Japanese. Premium removes those limits. On the web it's sold monthly, yearly (with a free trial) or as a one-time lifetime purchase, and the pricing page shows the price in your country.

Lingosive also has iOS and Android apps with a library of YouTube videos, a book reader and flashcards. Like Language Reactor, it can't add subtitles inside the Netflix app on a phone, and it has no Anki export and no Firefox or Safari version. It's an independent tool with no ties to Netflix, YouTube or any streaming service.

Trancy has a free plan and paid Premium tiers billed monthly or yearly. Its manual lists dual subtitles on YouTube, Netflix, Disney+, HBO Max, Udemy, Coursera, TED and edX on a computer, without Prime Video, and it runs in Chrome, Edge, Firefox and Safari. See Lingosive vs Trancy.

Migaku has no free plan. It's sold monthly or yearly with a 10-day money-back guarantee, or as a lifetime purchase, and its Chrome extension, built around one-click flashcards, works on Netflix, YouTube, Disney+, Rakuten Viki and Animelon. See Lingosive vs Migaku.

Trancy and Migaku details come from their own websites, checked October 30, 2026. For more options, see our roundup of Language Reactor alternatives or the row-by-row, sourced Lingosive vs Language Reactor comparison.

Frequently Asked Questions

Is Language Reactor free?

Yes. Language Reactor has a free mode with dual subtitles on Netflix and YouTube, a click-for-definition dictionary and a basic AI helper. Pro is optional: without it, your second line on Netflix comes from the subtitle tracks Netflix provides, and you can save words only inside PhrasePump.

How much does Language Reactor Pro cost?

Pro is billed monthly, every three months or yearly, and in every country we checked, the yearly plan works out cheapest per month. The amount depends on your country: the table at the top of this page shows the prices we saw on October 30, 2026, and Language Reactor's Pro page shows yours.

Is there a free trial or a student discount?

Language Reactor's FAQ mentions a free Pro trial that ends by returning you to free mode, without a charge. It seems to depend on your account: we saw no trial button on the Pro page when signed out and couldn't confirm how long it lasts. We found no student discount on its official pages.

Does Language Reactor work on Disney+ or Prime Video?

No. Its FAQ says Disney+ and Amazon Prime aren't supported yet, and HBO Max isn't among the sites it lists. Lingosive adds dual subtitles on Prime Video, Disney+ and HBO Max as well as Netflix and YouTube.

Is there a Language Reactor app for iPhone or Android?

Not from its maker. Its website works in a phone or tablet browser and can be added to your home screen, but the Netflix tools need the desktop Chrome extension, and its FAQ lists Android as not supported yet. Store apps with Language Reactor in the name are made by other developers.

Can I cancel Language Reactor Pro?

Yes. The Pro page says you can cancel after paying to stop the subscription from renewing. When the paid period ends, the FAQ says you lose machine translation and can't save new words or phrases, but you can still view and export the ones you saved, indefinitely. We didn't find a refund policy on its official pages.