LinDuo - Speak Languages: Language Learning App

LinDuo - Speak Languages is an educational app by LinDuo that helps you build vocabulary and practice listening, reading, writing, and speaking across multiple languages. It covers 135 real-life topics and more than 18,000 words for English, German, Spanish, French, Italian, and other languages, using bite-sized lessons, three word games, spaced repetition, and detailed progress statistics. Learners can study online or offline, at their own pace, and choose between beginner and advanced difficulty.

From a privacy standpoint, the app keeps things fairly straightforward. The main data flow is an automatic 7-day server-side progress backup, which helps preserve learning history if you switch devices. Multi-user profiles also keep each person's progress separate on a shared device, and the content rating is Everyone. There are no subscriptions, and the app is free to use, although it does include ads and offers optional in-app purchases or donation-based extras.

The app is designed to work offline, so it does not require a constant connection for everyday use. Permissions are limited to what core features need, such as notifications for practice reminders, and you can customize notifications, phonetics, illustrations, the timer, and a dark theme. For families, the multi-user system makes it easy to set up individual profiles so children and adults do not mix their learning data.

Key features

• 135 real-life topics you will actually use
• 18,000+ words of content for every skill level
• Read, listen, write, or combine all in one lesson
• Spaced repetition and mistake-focused review
• Bookmark flash cards and skip what you already know
• British and American accents with male and female voices
• Customizable translations, phonetics, illustrations, timer, and dark theme
• Three word games: True or False, Word Search, and Word Builder
• Multi-user device support with a profile system
• Automatic 7-day server-side progress backup

How to install

1. Tap the download button on this page to get the LinDuo APK file (file size: n/a).
2. When Android asks, allow your browser or file manager to install apps by enabling the "Install unknown apps" setting.
3. Open the downloaded APK file from your notifications or file manager.
4. Tap Install and wait for the installation to finish.
5. Open the app and start learning. LinDuo requires Android 6.0 or higher.

What's New · 7.37.1

Version 7.37.1 is a major update built around user requests, with thanks to Premium supporters. You now get full control over learning topics, including the ability to see contents, review progress per card, and remove items, along with detailed stats after each session, customizable notifications, instant content unlock, and green progress indicators on daily goals. Premium users also gain speed controls and skip-ahead options, while improved menus, offline protection, and more balanced learning reminders round out the release.

LinDuo is for language learners who want a flexible, bite-sized way to build vocabulary and practice listening, reading, and writing without committing to a subscription. It suits beginners and advanced students alike, as well as families sharing one device thanks to multi-user profiles and an Everyone content rating.

To get the most out of the app, set a daily goal, enable practice reminders, and use bookmarks to review difficult cards. Use dark theme for evening sessions and take advantage of offline mode when commuting. Remember that the automatic progress backup lasts only 7 days, so periodically confirm your progress is being saved.

LinDuo - Speak Languages offers a generous vocabulary course with a practical, privacy-conscious design. Its offline support, multi-user profiles, and transparent backup policy make it a solid choice for learners who want control over their data while staying motivated.