Comparison

Fluo vs Lexium

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

Head to head
About

Fluo

Master Chinese vocabulary with AI-powered sentences and spaced repetition. Learn words that matter to you through personalized reviews and interactive exercises. Get instant explanations and track your progress to build lasting language skills.

Highlights
  • AI-generated personalized sentences
  • Spaced repetition for memory retention
  • Topic-based vocabulary learning
  • Active and passive recall modes
  • Instant grammar and usage explanations
  • Translate and learn from any text
  • Progress tracking and daily goals
Features
Read full description

The fastest way to build a Chinese vocabulary that actually lasts! Fluo combines spaced repetition — the most effective memory technique ever studied — with AI-generated sentences tailored to your exact level. No flashcard grinding. No generic lessons. Every word you learn stays learned, because every review is timed perfectly and every sentence is built just for you. Adaptive learning Every sentence adapts to where you are right now. Words you know appear alongside words you're learning, so you're always challenged but never overwhelmed. As you improve, your sentences evolve with you — and you can listen to native audio for every single one. Learn what you actually care about Pick your topic — food, travel, business, health, or anything you type in — and practice sentences built around the vocabulary that matters to you. No more memorizing words you'll never use. Every word tracked, nothing left to chance Tap any word to see how well you remember it. Fluo tracks your recall for every single word and schedules reviews at the optimal time. Words you struggle with come back sooner. Words you know well get spaced out. You just practice — the system handles the rest. Test yourself in both directions See Chinese and recall the meaning. See English and produce the Chinese. Fluo's active and passive recall modes push you from recognition to real production — the difference between understanding a menu and ordering from it. A tutor on every sentence Curious why a word is used a certain way? Wondering about grammar? Tap "Ask" on any sentence and get a clear, detailed explanation. It's like having a Chinese tutor available 24/7. Translate anything, learn from everything Paste any Chinese or English text into the translator and instantly see a word-by-word breakdown — color-coded by how well you know each word. Turn real-world Chinese into a learning opportunity. Stay on track Set daily goals, build a streak, and watch your vocabulary grow. Fluo keeps you consistent with clear progress tracking so you always know exactly where you stand. Built for learners who want results. Download Fluo and watch your vocab grow! Privacy policy: https://fluolearning.com/privacy Terms of service: https://fluolearning.com/terms Support: https://fluolearning.com/support

About

Lexium

Master Spanish efficiently by focusing on the most common words used in daily conversation. This app uses interactive exercises and games, backed by science, to build fluency through repetition and context. Track your progress and achieve real results without memorizing low-value vocabulary.

Highlights
  • Focus on high-frequency Spanish words
  • Interactive games and exercises
  • Repetition and context-based learning
  • Real-world vocabulary usage
  • Progress tracking and daily goals
  • Science-backed learning methodology
Features
Read full description

Learn Spanish faster by focusing on what actually matters. Lexium is built around the most frequently used Spanish words, helping you build real fluency without wasting time on low-value vocabulary. Instead of learning randomly, you’ll focus on the 1,500 words that make up the majority of everyday conversation. WHY LEXIUM WORKS • Learn the highest-frequency Spanish words first • Backed by science • Build understanding through repetition and context • Focus on what actually moves you toward fluency LEARN THROUGH PRACTICE • Interactive games and exercises • Sentence completion and recognition • Real-world vocabulary usage TRACK YOUR PROGRESS • See how many words you’ve mastered • Daily goals and progress tracking • Clear path toward fluency Designed for efficiency, consistency, and real results. Stop memorizing random words. Start learning what matters. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://techpool99.github.io/Lexium-privacy-policy/

Screenshots

Fluo4 screens
Lexium4 screens

Verdict

The call

The clearest difference is update cadence: Fluo at every 4 days against Lexium's every 6 weeks. Fluo also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.6). Lexium's advantage is ratings volume (12 vs 2). On price, rating, ads and in-app purchases 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. Fluo sells 2 in-app purchases, starting at $9.99 per month and Lexium sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Fluo against 4.9 for Lexium. That said, the two scores are not equally well evidenced: Lexium has 12 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Fluo ships an update every 4 days, Lexium every 6 weeks. The most recent releases landed on October 14, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Fluo versus Lexium: the parameters behind the verdict, then further details
ParameterFluoLexium
PriceFreeFree
Rating5.0 (2 ratings) — better4.9 (12 ratings)
Positive reviews—100.0% of reviews
Number of ratings212 — better
Update frequencyEvery 4 days — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.6
Further details — not scored
Size54 MB22 MB
Age rating12+4+
DeveloperFluo IncSamuel Drackett

Customer experience

Fluo

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Lexium

All ratings12 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Fluo

Subscriptions2
  • Fluo Premium Monthly Subscription7 Days trial$9.991 Month
  • Fluo Premium Annual Subscription7 Days trial$59.991 Year
1 purchases

Lexium

Subscriptions1
  • Lexium Pro3 Days trial$4.991 Month

Questions

Is Fluo free?
Fluo is free to download, with in-app purchases available.
Is Lexium free?
Lexium is free to download, with in-app purchases available.
Which has better reviews, Fluo or Lexium?
Fluo is rated higher. Fluo averages 5.0 out of 5 from 2 ratings, while Lexium averages 4.9 from 12 ratings.
Do Fluo or Lexium have ads?
Neither Fluo nor Lexium shows ads.
Which is updated more often, Fluo or Lexium?
Fluo ships an update every 4 days, and Lexium every 6 weeks. Most recently, Fluo was updated on October 14, 2026 and Lexium on October 31, 2026.

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