Comparison

Lambda Lingua vs Katalava

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

Head to head
About

Lambda Lingua

Master Greek with a comprehensive trainer for reading, listening, writing, and speaking. Features smart flashcards, level-graded texts, AI-powered writing feedback, and offline functionality. Prepare for exams and build vocabulary effectively.

Highlights
  • Smart flashcards with spaced repetition
  • Level-graded Greek reading texts
  • AI-powered writing practice with feedback
  • On-device speech recognition for speaking practice
  • Offline functionality
  • Grammar reference by level
Features
Read full description

The complete Greek trainer — built for real progress and exam prep (Ellinomatheia and beyond). Learn the vocabulary that matters, then practise it every way that makes it stick. Focused, ad-free, offline. SMART FLASHCARDS Thousands of Greek words, A1–B2, each with audio, transcription, and example sentences. A proven Leitner spaced-repetition system shows hard words more often and easy ones less — ten focused minutes a day beats an hour once a week. READING A library of level-graded Greek texts. Tap any word for an instant translation, or have the whole text read aloud. LISTENING Train your ear with generated listening practice and natural audio. WRITING Practise letters and essays with AI feedback — scores, a summary, and concrete corrections. Built around real past-paper tasks. GRAMMAR REFERENCE Clear explanations with examples, organized by level A1–B2. SPEAKING PRACTICE Want to say the words out loud? The Voice Sprint turns revision into a quick game — on-device speech recognition checks whether a Greek speaker would understand you. MAKE IT YOURS Build your own collections or import a word list. Pick a theme: Hellenic blue, Cypriot, Aegean, or Byzantine gold. PRIVATE & OFFLINE Speech and text-to-speech run on your device. No ads, ever. Free to start — daily flashcards, reading, listening, and a writing review. Upgrade to Pro for unlimited practice, unlimited custom texts, and more AI generations. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Καλή μάθηση — happy learning.

About

Katalava

Features
Read full description

Katalava is a focused, minimalist Greek language quiz app for self-study and tutor-supported learners. Practice Modern Greek across levels A1, A2, and B1 through thousands of multiple-choice questions covering grammar, vocabulary, articles, and verb forms — each with translations and rule explanations. WHAT'S INSIDE • 5400+ multiple-choice questions across A1, A2, B1 • 1500+ native Greek audio clips (high-quality neural TTS) • Four audio task types: listen and translate, listen and answer, listen and reply, true or false • Sentence Builder: assemble shuffled Greek sentences word by word • Drill Mistakes mode: revisit the questions you got wrong • Weak Spots dashboard: percentage correct broken down by topic • Conjugation Drill: walk through one verb tense or mood at a time • 36 grammar rule cards with concise explanations and examples • Daily goal + streak counter to keep momentum • Filter by level, topic group, or question style • Optional push notifications at a configurable interval (5–60 min) • English and Russian UI DESIGNED FOR SELF-PACED LEARNING Pick an interval, get a Greek question on your home screen, answer at your own pace. Drill the words and forms you keep missing. Listen to native Greek audio. Build sentences from the bottom up.

Screenshots

Lambda Lingua4 screens
Katalava4 screens

Verdict

The call

The clearest difference is in-app purchases: Katalava at none against Lambda Lingua's 2. Katalava also leads on update cadence (every 2 days vs every 4 days). On price, ads, device support and iOS requirement 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. Lambda Lingua sells 2 in-app purchases, starting at $2.49 per month. Katalava asks for nothing beyond the download.

UpkeepUpdate frequency

Lambda Lingua ships an update every 4 days, Katalava every 2 days. Both last shipped on October 31, 2026.

Scorecard2 real differences · 8 level
Lambda Lingua versus Katalava: the parameters behind the verdict, then further details
ParameterLambda LinguaKatalava
PriceFreeFree
Rating4.3 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 4 daysEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.016.0 — better
Further details — not scored
Size88 MB10 MB
Age rating17+4+
DeveloperVIKTOR CHEBEREVRoman Krankus

In-app purchases

2 purchases

Lambda Lingua

Subscriptions2
  • Lambda Lingua PRO$2.491 Month
  • Lambda Lingua PRO$24.991 Year
None

Katalava

No in-app purchases

Questions

Is Lambda Lingua free?
Lambda Lingua is free to download, with in-app purchases available.
Is Katalava free?
Katalava is free to download, with no in-app purchases.
Do Lambda Lingua or Katalava have ads?
Neither Lambda Lingua nor Katalava shows ads.
Which is updated more often, Lambda Lingua or Katalava?
Lambda Lingua ships an update every 4 days, and Katalava every 2 days. Most recently, Lambda Lingua was updated on October 31, 2026 and Katalava on October 31, 2026.

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