eLang vs LangKai
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
eLang
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Learn a language in a real way, step by step Learning a new language is neither fast nor easy: it requires consistency, practice, and an effective methodology. eLang doesn’t promise magic formulas, but it does offer a comprehensive approach backed by research in language acquisition, based on Spaced Repetition. With a database of over 3,000 words and expressions, eLang helps you build a solid foundation. You’ll study and take exams at carefully scheduled intervals, ensuring long-term retention and measurable progress. How does it work? Each study session includes 10 lessons, which you can complete whenever you want. Each lesson contains: • The expression to study • A contextual example of usage • Relevant notes to better understand its meaning You can also listen to the pronunciation of each expression and example. If you’re subscribed, you’ll enjoy a clear, natural voice. If not, voice quality depends on your device. But don’t worry: you can earn “Gems” to unlock the natural voice, either by purchasing them or watching ads. Your choice! After studying… comes the challenge Once the session is over, you’ll take an exam on what you’ve learned. You can choose from three assessment modes: • Writing the expression • Reconstruction (assemble the expression from fragments) • Pronunciation Based on your performance and the type of exam, eLang assigns a score to each expression and calculates when you should be tested again, following the logic of Spaced Repetition. An expression is considered “Learned” when it reaches 20 points, and you won’t be tested on it again. But it’s not that easy: points are calculated based on your accuracy, exam mode, and mistakes (like incorrect characters in writing). Real learning, with real memory Suppose today you study a word and answer it correctly in the exam: you earn 5 points. Since it’s fresh, it’s normal to remember it. The next exam will be in two days. At that time, there’s no lesson—only a mandatory exam. If you get it right again, you earn 10 more points and the next exam is in one week. If you fail, you’ll study the expression again and retake the exam immediately—but with a penalty, for example, -3 points. So you’ll move forward and backward with each word until you truly learn it. This system reinforces long-term memory and prevents you from forgetting what you’ve learned. With eLang, every step matters. No rush, no shortcuts. Just real results.
LangKai
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LangKai is a serious —and addictive— way to actually learn languages, from A1 to C2. SIX LANGUAGES, IN YOUR LANGUAGE • Learn English (Cambridge focus), French, Spanish, Chinese, Japanese and Russian. • Use the app in Spanish, English or French: explanations and hints appear in the language you pick. • A gamified CEFR path with XP, daily streaks, quests and a weekly league. SIMULATED OFFICIAL EXAMS • Two modes: a short version (quick review) and an official version (same length and number of questions as the real exam). • Cambridge, DELF/DALF, HSK, JLPT and TORFL. • In the official version, questions appear in the exam's language, just like the real test. • Mistake review: after each exam you go through every mistake with the correct answer, its explanation and the listening transcript. EVERYTHING TO MASTER THE LANGUAGE • Reading and listening comprehension, Use of English and grammar, vocabulary and writing systems (hanzi, kana, Cyrillic). • Daily practice and a mistakes bank so you never repeat the same errors. FREE AND PREMIUM • Start free with the language you pick and its full A1→C2 path. • LangKai Premium unlocks all languages, the official exam mode, long-form comprehension and removes daily limits. Monthly or annual subscription; cancel anytime. No ads. No third-party trackers. Your data is yours. A Comas Industries product. SUBSCRIPTION LangKai Premium is an auto-renewable subscription (monthly or annual). Payment is charged to your Apple account at confirmation of purchase and renews automatically unless canceled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://app.langkai.app/privacidad
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Verdict
eLang and LangKai are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. eLang sells 5 in-app purchases, starting at $2.99 per month and LangKai sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
eLang ships an update every 6 days, LangKai every 4 days. The most recent releases landed on October 15, 2026 and October 24, 2026 respectively.
| Parameter | eLang | LangKai |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 days | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 48 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Yodeski Rodriguez Alvarez | David Comas Mendez |
In-app purchases
eLang
- Monthly$2.991 Month
- Annual$29.991 Year
- 1000 Gems$0.99
- 5000 Gems$2.99
- 10000 Gems$5.99
LangKai
- Premium mensual$2.991 Month
- Premium anual$22.991 Year









