LexiBoom vs Immersea
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
LexiBoom
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Bonjour, French learner! Your brain is built to learn French. We just make it happen faster. French doesn't have to feel overwhelming. FrenchApp makes it feel like a conversation ā one lesson at a time. Learn at your own pace. Bite-sized text lessons with audio pronunciations help you build a solid foundation. from your very first word to full sentences. Practice with conversational AI that actually knows where you are in your learning journey. It adapts to your current lesson, so every conversation is the right challenge at the right time. Ask a real expert. Got a question only a human can answer? Post it in Q&A and get answers from French language expert. No question is too small. Play your way to fluency. Addictive games that make French stick: 1. Spell It ā Fill in the missing letters to complete the French word 2. Le ou La? ā Master French articles by guessing M or F 3. Word Match ā See the meaning, pick the right French word Curated resources skip the search. We've handpicked the best books to accelerate your French ā all in one place. Most language apps give you flashcards. We give you a system, lessons, AI agents, expert answers, games, and curated resources. Everything working together to build real fluency. French fluency is closer than you think. Start today. No fluff. No filler. Just French - built into your day.
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 ⢠Learn Spanish, Japanese, Korean, and more from YouTube, podcasts, and video ⢠Dual subtitles: source language + your learning language ⢠Tap any word for AI definitions in context ⢠Build your personal vocabulary from real content ⢠Flashcards and listening practice ⢠Spaced repetition: review words at the right time ⢠Works with content you find, not a fixed course library PERFECT FOR ⢠Learners who want language immersion from native content, not drills ⢠Intermediate learners building vocabulary from real speech ⢠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/
Screenshots
Verdict
The clearest difference is in-app purchases: LexiBoom at none against Immersea's 2. LexiBoom also leads on iOS requirement (13.0 vs 15.1). Immersea's advantage is update cadence (every 10 days vs every 5 weeks). On price, ads and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Immersea sells 2 in-app purchases, starting at $7.99 per month. LexiBoom asks for nothing beyond the download.
LexiBoom ships an update every 5 weeks, Immersea every 10 days. The most recent releases landed on November 5, 2026 and November 13, 2026 respectively.
| Parameter | LexiBoom | Immersea |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks | Every 10 days ā better |
| Ads | No | No |
| In-app purchases | No ā better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 ā better | 15.1 |
| Further details ā not scored | ||
| Size | 26 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | Mohit Mrinal | Amine Elbarry |
In-app purchases
LexiBoom
No in-app purchases
Immersea
- Immersea Monthly Plan3 Days trial$7.991 Month
- Immersea Yearly Plan$59.991 Year









