Comparison

Bilingualizer vs Language Reactor

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Bilingualizer

Features
Read full description

Bili helps you learn a language from the world around you: messages, books, signs, lessons, and conversations. Instead of giving you full translations first, Bili helps you notice useful words and phrases, understand them with lightweight hints, and repeat them often enough to remember. Capture language from photos, speech, or typed text. Bili extracts useful words and phrases, lets you review them later, and turns your saved captures into simple listening practice for chores, walks, workouts, or commuting. What you can do with Bili: - Capture words from camera, photos, speech, or manual text - Get lightweight hints for unknown words - Reveal full translations when you need them - Save useful words and phrases from real life - Listen back to captured words as audio practice - Review words by exposure, not just flashcard sessions - Use curated starter phrases to build the basics Bili is built for learners who want to stay close to real language. Not another full-translation shortcut. Not a heavy study system. Just useful words, repeated at the right time, until they stick.

About

Language Reactor

Learn languages by watching videos with dual subtitles and instant contextual translations. Save words, practice with spaced-repetition flashcards, and get AI-powered grammar explanations. Track your progress and master new vocabulary naturally.

Highlights
  • Dual subtitles on YouTube
  • Contextual word translation & pronunciation
  • AI grammar explanations
  • Spaced-repetition flashcards
  • Progress tracking
  • Supports 9 languages
Features
Read full description

Linglass turns YouTube into the most natural way to learn a language — watch what you love, with dual subtitles, and pick up words without it ever feeling like studying. Tap any word in the subtitles to see what it means in context (not just a dictionary definition), hear it pronounced by a native voice, and save it with one tap. Every saved word comes back at the perfect moment with spaced-repetition flashcards, so it sticks. DUAL SUBTITLES ON YOUTUBE Watch any YouTube video with subtitles in your target language and your own, side by side. Tap a word for an instant, context-aware translation. CONTEXTUAL TRANSLATION + PRONUNCIATION Get the meaning that fits the sentence, with phonetic transcription and native-voice audio. Built for understanding, not just lookups. AI GRAMMAR EXPLANATION Select a sentence and get a clear, structured breakdown of the grammar — each construction labelled with its CEFR / JLPT / HSK / TOPIK level, in your own language. SMART FLASHCARDS (SPACED REPETITION) Review saved words with the real video context — the sentence and the frame they came from. The FSRS algorithm schedules each card right before you'd forget it. TRACK YOUR PROGRESS Streaks, a review heatmap and clear stats keep you coming back. LEARN: English, Spanish, French, German, Italian, Portuguese, Russian, Japanese, Korean and Chinese — with the interface in 20 languages. FREE TO USE: 15 translations a day, 50 saved words, and AI grammar explanations every month. PREMIUM removes the limits — unlimited translations, unlimited saved words and far more AI grammar. Watch. Click. Translate. Remember. linglass.app · support@linglass.app Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://linglass.app/privacy

Screenshots

Bilingualizer4 screens
Language Reactor4 screens

Verdict

The call

The clearest difference is in-app purchases: Bilingualizer at none against Language Reactor's 2. Language Reactor's advantage is update cadence (every 4 days vs every 2 months) and iOS requirement (16.4 vs 26.0). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Language Reactor sells 2 in-app purchases, starting at $7.99 per month. Bilingualizer asks for nothing beyond the download.

UpkeepUpdate frequency

Bilingualizer ships an update every 2 months, Language Reactor every 4 days. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

Scorecard3 real differences · 7 level
Bilingualizer versus Language Reactor: the parameters behind the verdict, then further details
ParameterBilingualizerLanguage Reactor
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad — betteriPhone
Requires iOS26.016.4 — better
Further details — not scored
Size14 MB53 MB
Age rating4+4+
DeveloperOndrej MacoszekIlia Furtaev

In-app purchases

None

Bilingualizer

No in-app purchases

2 purchases

Language Reactor

Subscriptions2
  • Premium (Monthly)$7.991 Month
  • Premium (Annual)7 Days trial$59.991 Year

Questions

Is Bilingualizer free?
Bilingualizer is free to download, with no in-app purchases.
Is Language Reactor free?
Language Reactor is free to download, with in-app purchases available.
Do Bilingualizer or Language Reactor have ads?
Neither Bilingualizer nor Language Reactor shows ads.
Which is updated more often, Bilingualizer or Language Reactor?
Bilingualizer ships an update every 2 months, and Language Reactor every 4 days. Most recently, Bilingualizer was updated on September 22, 2026 and Language Reactor on September 23, 2026.

Other comparisons