Comparison

Language Reactor vs Lahja

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

Head to head
About

Language Reactor

Learn languages by watching YouTube videos, podcasts, and movies. This app provides seamless AI-powered translations and an AI tutor to explain slang and idioms. Practice pronunciation with real-time transcriptions and sentence-by-sentence subtitles.

Highlights
  • Learn from real YouTube videos, podcasts, and movies
  • AI-powered translations in 80+ languages
  • AI Assistant for instant explanations
  • Shadowing practice for pronunciation
  • Sentence-by-sentence synchronized subtitles
  • Part-of-speech highlighting for grammar
Features
Read full description

You know the words. Real speech still gets away from you. Sound familiar? Fast. Blurred together. Half the sounds gone. With PlayLingo you learn from what you actually enjoy: movie scenes, YouTube, podcasts, books. Lingo, your AI assistant, explains any word or phrase, and you start to understand real speech. WATCH: movies, shows and any YouTube video • Learn from movie scenes, cartoons, interviews and your favorite YouTubers • Open any YouTube video, or start with collections picked for your level, from A1 to C2 • Bilingual subtitles, line by line, with a translation that fits the scene LISTEN: podcasts you'll actually understand • Podcasts in the language you're learning, from short lessons to real conversations • Every episode gets subtitles: tap a word, see the translation, break down the phrase READ: books, on the page or out loud • Classics and short stories in the language you're learning • Read line by line with translation, or let a natural voice read the book to you on a walk BRING YOUR OWN • Any book, document or photo of a page becomes a lesson, and your own audio and video get subtitles LINGO, YOUR AI ASSISTANT, EXPLAINS EVERY WORD • Tap a word or an idiom and see what it means in this exact sentence. "Make sure" is one phrase, not two words • Hear how a word really sounds and see how the sentence is built, with parts of speech in color • Ask Lingo about anything you didn't get, or type a phrase in your language and hear how it's said PRACTICE INSIDE EVERY VIDEO • Choose how to watch: just enjoy, test your understanding, train your ear, build lines or speak • Hide the translation and work out the meaning, or hide the text and catch every line by ear • Shadow each line out loud, and watch the words light up as you say them WORDS THAT STICK • Save words from subtitles, books or your chat with Lingo in one tap • Spaced repetition brings each word back right before you'd forget it • Every card keeps the sentence, and the movie moment, where you met the word • Your saved words on your Home Screen, a new one every hour • A few minutes a day keeps your streak going, and freezes cover the busy days PLAYLINGO PRO Unlimited watching and practice, chat with Lingo, and AI subtitles for any podcast and your own recordings. Cancel anytime in the App Store. WHAT PEOPLE SAY (App Store reviews) "For the first time, I actually enjoy learning English." "The only app I use to watch English videos. It's simple, and works great." "Love the dual subtitle function." 67 LANGUAGES English, Spanish, French, German, Italian, Portuguese, Japanese, Korean, Chinese, Arabic, Turkish, Russian and more, each with explanations in your language. Watch, listen and read what you love. The language follows. Contact: info@playlingo.app Terms of Use: https://playlingo.app/terms

About

Lahja

Master accents and dialects with an AI-powered pronunciation tutor. Get real-time feedback on segmental accuracy, fluency, and intonation to speak confidently in any language or regional accent. Offers specialized scenarios for professionals, travelers, and content creators.

Highlights
  • AI pronunciation tutoring
  • Real-time feedback
  • Segmental accuracy analysis
  • Fluency and intonation tracking
  • Culturally relevant scenarios
  • Multiple language and dialect options
  • Privacy-focused design
Features
Read full description

Don’t just learn a language—master the accent. Lahja is your personal AI pronunciation tutor, designed to help you speak confidently in any dialect. Whether you are relocating for work, traveling the globe, or refining your professional communication, Lahja adapts to your specific goals with real-time feedback and culturally relevant scenarios. Go beyond basic vocabulary. Lahja analyzes your segmental accuracy, fluency, and intonation instantly, providing actionable tips to help you sound like a local. YOUR GOAL, YOUR PATH Choose a learning path that fits your life. Lahja offers specialized scenarios for: • Professionals: Master workplace communication, from business meetings to persuasive sales pitches. • Industry-Specific Tracks: Tailored lessons for Medical (bedside manner), Hospitality (service etiquette), and Law Enforcement. • Content Creators: Fine-tune your voice and delivery for podcasts and social media. • Travelers: Navigate daily life and tourism with ease. MASTER EVERY DIALECT Switch instantly between languages and regional accents with a single tap. • Gulf / Emirati Arabic • Standard Arabic • Standard American & British English • Australian & Canadian English • French & more REAL-TIME AI FEEDBACK Don't just guess how you sound. Our advanced AI breaks down your speech instantly: • Visual Scoring: Get accurate metrics on your voice recognition, rhythm, and fluency. • Phoneme Breakdown: See exactly which vowels and consonants need improvement. • Instant Feedback Loops: Listen, practice, and review until you hit 100%. LIGHTWEIGHT & PRIVATE Built to be fast on modest devices. We prioritize your privacy—we do not sell personal data, and you can request to delete your recordings at any time. Travel global. Sound local. Download Lahja today and start speaking with confidence. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.lahja.app/privacy

Screenshots

Language Reactor4 screens
Lahja4 screens

Verdict

The call

The clearest difference is rating: Language Reactor at 4.5 against Lahja's 3.0. Language Reactor also leads on update cadence (every 8 days vs every 2 months) and ratings volume (873 vs 2). Lahja's advantage is in-app purchases (none vs 6) and iOS requirement (15.0 vs 18.0). On price, ads, monetization model 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 6 in-app purchases, starting at $11.90 per month. Lahja asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Language Reactor holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: Language Reactor has 873 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Language Reactor ships an update every 8 days, Lahja every 2 months. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
Language Reactor versus Lahja: the parameters behind the verdict, then further details
ParameterLanguage ReactorLahja
PriceFreeFree
Rating4.5 (873 ratings) — better3.0 (2 ratings)
Positive reviews82.5% of reviews—
Number of ratings873 — better2
Update frequencyEvery 8 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size117 MB40 MB
Age rating12+4+
DeveloperAlexey NenastyevLahja Limited

Customer experience

Language Reactor

All ratings820 ratings
Positive86.7%
Neutral2.9%
Negative10.4%
Written reviews63 reviews
Positive82.5%
Neutral6.3%
Negative11.1%

Lahja

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

6 purchases

Language Reactor

Subscriptions6
  • PlayLingo Pro$11.901 Month
  • PlayLingo PRO$34.996 Months
  • PlayLingo Pro$74.991 Year
Show 3 more
  • PlayLingo Pro1 Year trial$74.991 Year
  • PlayLingo Pro3 Days trial$74.991 Year
  • PlayLingo Pro Family$119.991 Year
None

Lahja

No in-app purchases

Questions

Is Language Reactor free?
Language Reactor is free to download, with in-app purchases available.
Is Lahja free?
Lahja is free to download, with no in-app purchases.
Which has better reviews, Language Reactor or Lahja?
Language Reactor is rated higher. Language Reactor averages 4.5 out of 5 from 873 ratings, while Lahja averages 3.0 from 2 ratings.
Do Language Reactor or Lahja have ads?
Neither Language Reactor nor Lahja shows ads.
Which is updated more often, Language Reactor or Lahja?
Language Reactor ships an update every 8 days, and Lahja every 2 months. Most recently, Language Reactor was updated on November 8, 2026 and Lahja on October 31, 2026.

Other comparisons