Comparison

Immersea vs FlowLingua

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

Head to head
About

Immersea

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Learn Spanish, Japanese, and any language from the videos and podcasts you already watch, not canned lessons. Immersea turns YouTube links, podcast episodes, and your own files into interactive language lessons. Read along and learn with subtitles synced to playback: dual captions in the source language and yours. Tap any word for an instant definition, save it to your vocabulary list, and review with flashcards and spaced repetition practice. WHY IMMERSEA Most apps teach from their own curriculum. Immersea lets you learn from real content in the language you choose: Spanish, French, Japanese, Korean, German, and more. Bring a YouTube video, a podcast episode, or a file you care about. Immersea adds dual subtitles, tap-to-learn definitions, and a personal word library. HOW IT WORKS 1. Paste a YouTube link, podcast URL, video file, or text 2. Choose the language you are learning 3. Follow along with dual captions synced to playback 4. Tap any word for meaning, examples, and pronunciation 5. Save words to your vocabulary library 6. Practice with flashcards and spaced repetition when words are due FEATURES β€’ Learn Spanish, Japanese, Korean, and more from YouTube, podcasts, and video β€’ Dual subtitles: source language + your learning language β€’ Tap any word for AI definitions in context β€’ Build your personal vocabulary from real content β€’ Flashcards and listening practice β€’ Spaced repetition: review words at the right time β€’ Works with content you find, not a fixed course library PERFECT FOR β€’ Learners who want language immersion from native content, not drills β€’ Intermediate learners building vocabulary from real speech β€’ Anyone who learns best from podcasts, vlogs, and real-world video Start with a link you love. Turn it into a lesson. Build vocabulary you will actually use, in whatever language you are learning. Download Immersea and learn from content that keeps you watching. LEGAL Privacy Policy: https://immersea-web.vercel.app/privacy Terms of Use: https://immersea-web.vercel.app/terms Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

FlowLingua

Features
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Other apps make you click. We let you read. FlowLingua is a bilingual reader that turns any foreign-language book into a bilingual book. Import your own books, articles, videos and audio β€” or start with the ready-made content in the library. Read and listen to foreign-language content as if it were your native language. Every word and every sentence is already translated β€” synced to the audio, with no clicking at all. No dictionary, no vocabulary drills, no loss of flow. It is the digital heir of the interlinear tradition β€” the bilingual books and parallel-text editions of Ilya Frank, but without the page flipping, and for any book you choose. β–Έ WHAT FLOWLINGUA DOES β€’ Automatic bilingual reading β€” the Birkenbihl method in its purest form: every word of your book sits right under the original, including grammatical structure. β€’ Translated sentence by sentence β€” plus the natural sentence translation, so nothing stays unclear. β€’ Synced to the audio β€” text and original audio run word by word together (karaoke principle). You train pronunciation, rhythm and listening comprehension. β€’ Import your own content β€” EPUB, PDF, DOCX, YouTube videos and audio files are decoded and translated automatically. β€’ Easy reading β€” a dedicated Birkenbihl mode for relaxed, uninterrupted reading. β€’ Vocabulary tracking β€” unknown words come pre-marked; you remove the mark once you know them. β€’ Shadowing & speaking practice β€” repeat sentences right after native speakers, with sentence repeat. β€’ Learn offline β€” download content and keep learning anywhere. Progress syncs automatically. β€’ 20 languages β€” from English, Spanish and French to less common languages. β€’ Listening-Reading (L-R) without the three-window setup β€” one screen. β–Έ HOW IT WORKS 1. Import β€” bring your own book, video or audio, or pick ready-made content. 2. Understand β€” everything is already translated, word by word and sentence by sentence. 3. Stay in flow β€” press play and let the audio guide you. The translation is there when you need it. β–Έ WHO IS THIS FOR? β€’ You want the books you actually care about as bilingual books β€” without flipping pages or clicking every word. β€’ You want to read foreign-language books and understand them right away. β€’ You know the Birkenbihl method and finally want a tool that decodes automatically. β€’ You come from a reader where you have to click every single word β€” and you're done with the clicking. β€’ You've drilled vocabulary and still never understood a real book. β–Έ WHY FLOWLINGUA EXISTS I wanted to learn languages β€” but memorizing vocabulary and grammar put me off. So I researched how polyglots really do it: understand, don't memorize. That's why I built FlowLingua as an app. FlowLingua combines three proven input methods: the Birkenbihl method (decoding), Listening-Reading (listening and reading at the same time) and Comprehensible Input by Stephen Krashen (understandable content that interests you). β–Έ SUPPORTED FORMATS EPUB Β· PDF Β· DOCX Β· YouTube Β· MP3 & audio files β–Έ FREQUENTLY ASKED QUESTIONS Can I use FlowLingua as a bilingual book reader? Yes β€” import any EPUB, PDF, video or audio file and FlowLingua turns it into a bilingual book: original and translation together, word by word and sentence by sentence, synced to the audio. The library also has ready-made content to start with. Do I need prior knowledge? No. The word-for-word translation makes texts understandable even if you don't know a single word yet. How is this different from vocabulary apps? You learn with real books, videos and audio β€” not quiz exercises. Understanding comes first. Does it work offline? Yes, content can be downloaded. Stay in flow. Not in the dictionary. 7-day free trial. β–Έ ATTRIBUTION Sample content β€œDaily Routine”: work by SpeakSmart Academy, licensed under CC BY 4.0 (creativecommons.org/licenses/by/4.0/). Translated and presented in FlowLingua. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Immersea4 screens
FlowLingua4 screens

Verdict

The call

The clearest difference is update cadence: FlowLingua at daily against Immersea's every 10 days. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Immersea sells 2 in-app purchases, starting at $7.99 per month and FlowLingua sells 5 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Immersea ships an update every 10 days, FlowLingua daily. The most recent releases landed on October 9, 2026 and October 16, 2026 respectively.

Scorecard1 real difference Β· 5 level
Immersea versus FlowLingua: the parameters behind the verdict, then further details
ParameterImmerseaFlowLingua
PriceFreeFree
Update frequencyEvery 10 daysDaily β€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 β€” better
Further details β€” not scored
Size54 MB47 MB
Age rating4+4+
DeveloperAmine ElbarryTomas Chladek

In-app purchases

2 purchases

Immersea

Subscriptions2
  • Immersea Monthly Plan3 Days trial$7.991 Month
  • Immersea Yearly Plan$59.991 Year
5 purchases

FlowLingua

Subscriptions5
  • Flow β€” Monthly7 Days trial$2.991 Month
  • Audio add-on β€” Monthly$2.991 Month
  • Power$8.991 Month
Show 2 more
  • Flow β€” Yearly7 Days trial$22.991 Year
  • Power$69.991 Year

Questions

Is Immersea free?
Immersea is free to download, with in-app purchases available.
Is FlowLingua free?
FlowLingua is free to download, with in-app purchases available.
Do Immersea or FlowLingua have ads?
Neither Immersea nor FlowLingua shows ads.
Which is updated more often, Immersea or FlowLingua?
Immersea ships an update every 10 days, and FlowLingua daily. Most recently, Immersea was updated on October 9, 2026 and FlowLingua on October 16, 2026.

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