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Language App Comparison Tool

Compare different language learning apps side by side to find the best fit for your learning style and goals. Add up to 3 apps to see detailed feature comparisons.

Comparing 3 Apps

LingoDeer logo

LingoDeer

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Readlang logo

Readlang

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MosaLingua logo

MosaLingua

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Basic Info

Cost
Free, Subscription
Free, Subscription
Subscription
TL;DR
LingoDeer offers in-depth, grammar-focused courses, particularly strong for East Asian languages like Japanese, Korean, and Chinese.
A web-reader tool that translates words and phrases on any website, creating flashcards for you to study later.
A powerful flashcard app using spaced repetition to help you memorize useful vocabulary quickly. Best used with other resources for grammar.

Description

Description

LingoDeer is often seen as a more structured alternative to apps like Duolingo. It provides a well-organized curriculum with detailed grammar explanations at the beginning of each lesson, which is especially helpful for understanding complex languages. The app is highly regarded for its courses in Japanese, Korean, and Chinese. While its lesson format can feel repetitive, it builds a solid foundation in grammar and vocabulary for beginner to intermediate learners.

Readlang helps you learn a language by reading authentic content from across the web. As a browser extension and web app, it allows you to click on any word or phrase you don’t know on a webpage to get an instant translation. These translated words are automatically saved as flashcards for later review via spaced repetition. It is an exceptional tool for intermediate-to-advanced learners looking to transition to native materials and expand their vocabulary contextually, but it is primarily a reading and vocabulary tool with no speaking component.

MosaLingua is built around a highly effective Spaced Repetition System (SRS) designed to help you learn and retain a large amount of vocabulary efficiently. The app prioritizes the most useful words and phrases to accelerate practical knowledge. While its core is flashcards, the platform also includes dialogues, articles, and other resources to add context. It is a powerful tool for learners dedicated to building a strong vocabulary foundation, though they will need to look elsewhere for structured grammar lessons or extensive conversation practice.

Features

Key Features
Structured Course, Grammar First, Comprehensive, Bite Sized Lessons, Grammar Practice
Reading Comprehension, Article Based, Comprehensible Input, Vocabulary Builder, Spaced Repetition
Flashcards, Spaced Repetition, Vocabulary Builder, Bite Sized Lessons, Audio Based, Offline Access

Limitations

Known Issues
Limited Speaking Practice, Repetitive Content
Limited Speaking Practice, Passive Learning Focus, Browser Plugin Focused
Weak Grammar Explanation, Passive Learning Focus

Core Methodology & Pedagogy

Grammar First
Comprehensible Input

Content & Material Type

Structured Course
Flashcards
Spaced Repetition
Audio Based
Article Based

Primary Skill Focus

Vocabulary Builder
Grammar Practice
Reading Comprehension

Interaction & Technology

Offline Access

Learning Context & Style

Bite Sized Lessons
Comprehensive
LingoDeer vs. Readlang vs. MosaLingua Comparison | LanguageApps.info | LanguageApps.info