--- title: "NoaLingua vs Language Reactor · NoaLingua" description: "Language Reactor is the established dual-subtitle extension for YouTube and Netflix. NoaLingua is the no-account, local-first alternative. What we verified." url: "https://noalingua.com/compare/noalingua-vs-language-reactor/" language: "en" modified: "2026-09-10" license: "CC BY 4.0 — https://creativecommons.org/licenses/by/4.0/" --- Comparison # NoaLingua vs Language Reactor: the incumbent, and the local alternative Language Reactor is the established default for dual subtitles on YouTube and Netflix, with a mature workflow many learners already know. Choose NoaLingua if you want no account, local data, PDF reading and built-in speaking and review in the same tool — and accept a far younger product. **Disclosure:** NoaLingua is our product. NoaSolutions builds it and earns money when people buy it. Weigh this comparison accordingly, including the rows where we say we lose. [How we research these](https://noalingua.com/editorial-policy/). Checked against Language Reactor’s [official FAQ](https://www.languagereactor.com/help/faq) on 21 August 2026. Some rows were confirmed against their [Chrome Web Store listing](https://chromewebstore.google.com/detail/language-reactor/hoombieeljmmljlkjmnheibnpciblicm) , [official getting-started page](https://www.languagereactor.com/help/basic) instead; each such row says so. What we could not confirm on 21 August 2026 Language Reactor's main source was readable, but it did not settle every criterion in this table. 1 of the 9 rows are therefore marked unverified rather than filled in from memory. Our rule is that a claim about another product cites that product’s own page. When we cannot read the page, the honest answer is to say so and send you to [check it yourself](https://www.languagereactor.com/help/faq). Researched and written by [Nemanja Pejić](https://noalingua.com/authors/nemanja-pejic/) · Founder and developer of NoaLingua Published 18 August 2026 · Updated 10 September 2026 Research method ## How NoaLingua checked this comparison **NoaLingua:** checked against its product source and plain captures at version 0.2.36. **Language Reactor:** checked against its own [official FAQ](https://www.languagereactor.com/help/faq) on 21 August 2026. No logged-in competitor account was used for this revision, so it is an official-source comparison rather than a hands-on competitor test. There are no competitor screenshots presented as first-hand proof; behaviours the official sources did not settle remain explicitly unverified in the table. **Criteria used** - supported content and devices - lookup, capture and review workflow - account and data model - free and paid boundaries - speaking practice and stated limits ## Side by side | | NoaLingua | Language Reactor | | --- | --- | --- | | Maturity and user base They win this | Version 0.2.36, 115 users and 5 Chrome Web Store ratings (5.0/5) | Version 5.1.8, 2,000,000 users, rated 4.2 out of 5 from 4.3K ratings [Chrome Web Store listing](https://chromewebstore.google.com/detail/language-reactor/hoombieeljmmljlkjmnheibnpciblicm), 18 August 2026 | | Video platforms | YouTube and Netflix have dedicated support; any other site works only if it exposes a readable caption track | Netflix and YouTube, plus text import for books and websites [official getting-started page](https://www.languagereactor.com/help/basic), 21 August 2026 | | Account required | No account of any kind | [— unverified check their page ↗](https://www.languagereactor.com/help/faq) | | What the paid tier changes | Removes a deck-size cap. Every feature is available before paying | The official FAQ says Pro primarily adds machine translations and saving words and phrases, with a daily machine-translation allowance | | PDFs and documents | Bilingual reader up to 50 pages, layout-preserving viewer, and import of your own .txt, .srt, .vtt or .md | The getting-started page documents importing web pages. The sources checked do not establish comparable PDF support [official getting-started page](https://www.languagereactor.com/help/basic), 21 August 2026 | | Speaking practice | Whole-video shadowing, one-sentence drilling and scored pronunciation feedback | The getting-started page documents voice recording from the dictionary control, but not an equivalent whole-video shadowing loop or comparable scoring [official getting-started page](https://www.languagereactor.com/help/basic), 21 August 2026 | | Review system | 30 practice formats and spaced repetition, with the source sentence kept on every card | The official help documents saved words and flashcards; the sources checked do not settle its review scheduling in enough detail for an equivalence claim | | Keyboard layout | Its own default, plus a Language Reactor preset for fingers that know that one | The getting-started page documents A/S/D for previous, replay and next, Q for auto-pause, and other player shortcuts [official getting-started page](https://www.languagereactor.com/help/basic), 21 August 2026 | | Dual subtitles themselves | Caption blocks rebuilt into sentences before translation, so replay lands on real boundaries — see [how dual subtitles work](https://noalingua.com/features/youtube-dual-subtitles/) | The getting-started page documents clickable subtitles, machine or human translations, auto-pause and subtitle navigation; it does not state the same sentence-rebuild mechanism [official getting-started page](https://www.languagereactor.com/help/basic), 21 August 2026 | Rows marked *They win this* are where Language Reactor is honestly better. Every comparison on this site has at least one, because a comparison the author wins outright is one nobody should believe. ## Choose NoaLingua if… - You do not want another learning account. - PDFs and ordinary web reading should feed the same deck. - Shadowing, pronunciation feedback and review games matter to you. - You prefer a one-time purchase option. - You want your deck in a file you own. ## Choose Language Reactor if… - You want the established, widely-used subtitle interface. - You already know its keyboard workflow and like it. - Maturity and a large existing user base matter to you — ours is a 0.2 release. - Its hosted web environment is part of how you study. Not sure Language Reactor is the one you are comparing against? If you have already decided to leave it and want a shortlist rather than a head-to-head, [alternatives to Language Reactor](https://noalingua.com/alternatives/language-reactor/) is organised by the reason people actually leave. Migrating your vocabulary If you already have a deck elsewhere, NoaLingua imports CSV and its own JSON profile format, and import adds rather than overwriting — words you already have keep their repetition history. Export is free on every plan in both directions, so trying it costs you nothing but the download. ## Common questions about NoaLingua What remains unverified in this comparison? The current FAQ and getting-started page are readable, so the documented subtitle workflow and paid boundary are now sourced. Account requirements and several deeper implementation details remain open because the official pages checked do not settle them. We leave those cells unverified rather than infer from a login screen or memory. Can I use the Language Reactor keyboard layout in NoaLingua? Yes. There is a Language Reactor preset alongside the NoaLingua default, and every player key can also be rebound individually. Is NoaLingua a free Language Reactor alternative? NoaLingua is free to use with every feature available; paid plans remove a cap on how many words your deck holds. What “free” covers differs between products, so compare the specific constraint that would affect your own routine. ## Other comparisons [vs Migaku NoaLingua vs Migaku: a compact tool, or a whole system](https://noalingua.com/compare/noalingua-vs-migaku/)[vs Immersive Translate NoaLingua vs Immersive Translate: study tool or universal translator](https://noalingua.com/compare/noalingua-vs-immersive-translate/)[vs Trancy NoaLingua vs Trancy: platform breadth against local depth](https://noalingua.com/compare/noalingua-vs-trancy/) ## Try NoaLingua on the next video you were going to watch anyway. Free, with every feature. No account, nothing to cancel, and your deck stays on your machine. [Add to Chrome — Free Add to Chrome](https://chromewebstore.google.com/detail/ocimolffhgpeeoifjpjhgikgfbnmlkdh) Opens the Chrome Web Store listing **NoaLingua — beyond dual subs: video, web, PDF** — free, no account, Chrome 138 or newer. - [Free, and not a trial Every feature on the free plan — both PDF modes, shadowing, all 30 practice formats.](https://noalingua.com/pricing/) - [No account, no email Nothing to sign up for and nothing to cancel. There is no login screen at all.](https://noalingua.com/privacy/) - [Two dropdowns to set up Pick what you are learning and what you want translations in. That is the whole setup.](https://noalingua.com/getting-started/) - [Your words stay yours Export to Anki, CSV, a spreadsheet or a full JSON profile — free on every plan.](https://noalingua.com/docs/export-import/) [What happens after you install](https://noalingua.com/getting-started/) · [Pricing](https://noalingua.com/pricing/) · [What it cannot do](https://noalingua.com/limits/)