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App Settings

Configure developer tools and device simulations.

Developer Options

Analytics Tracking

Help us improve UseYu by sending anonymous usage data.

Show Developer Console

Enable on-screen floating console log for mobile testing.

Simulate Device

Force the application to trigger specific OS-level PWA prompts for local testing.

  • Off (Native Behavior)
  • Android (Deferred Prompt)
  • iOS (Safari)
  • iOS (Chrome)
  • iOS (Firefox)

Push Notification Test

Queue a test notification to your current device. It will arrive in exactly 15 seconds so you can background the app.

Gamification Testing

Test XP Incrementing

Triggers local events to test the rolling odometer, Rank-Up Toasts, and Backend Synchronization pipelines.

Remove Test Gamification Data

Clears all locally injected `test_xp_*` events from your local cache and instructs the backend to purge them from the authoritative ledger.

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Unlock offline downloads, full access to all series, and support new development.

  • Download lessons for offline study
  • Access the entire UseYu content library
  • Offline drills for up to 500 words
  • Support the development of new content
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Install in Two Steps

Add UseYu to your home screen for a full-screen experience, faster loading, and robust offline access.

1. Tap the Share icon
2. Then, select 'Add to Home Screen'
Add to Home Screen

Language & Script Guide

What is Mandarin?

Mandarin is the official language of Mainland China and Taiwan, and one of the official languages of Singapore. It is the most widely spoken Chinese dialect globally.

What is Cantonese?

Cantonese is the primary language spoken in Hong Kong, Macau, and the Guangdong province of China. It is also widely spoken in overseas Chinese communities.

What is Simplified Chinese?

Simplified Chinese characters were created to increase literacy rates by reducing the number of strokes. They are officially used in Mainland China and Singapore.

What is Traditional Chinese?

Traditional Chinese characters retain their historical shapes and strokes. They are primarily used in Taiwan, Hong Kong, and Macau.

Which should I choose?

If you plan to visit Mainland China or want to speak with the largest number of people, choose Mandarin + Simplified. If you are interested in Hong Kong culture, media, or visiting Macau, choose Cantonese + Traditional.

Scholar

1

Commoner

白丁 (Bai Ding)
0 XP 100 XP to Tong Sheng

Lifetime Experience

0 XP
Learning 0
Review 0
Interaction 0

Learning Stats

0 Lessons Completed
0 Vocab Seen
0 Drills Completed
0 Lessons Passed (70%+)
0 Vocab Mastered
0 Drills Passed (70%+)

Activity Dashboard

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Contexts & Encounters

You have encountered in the following lessons:

Link Asset to Content

Media Library
Upload New
  • Cover Image (cover)
  • Thumbnail (thumbnail)
  • Intro Slide (intro_slide)
  • Outro Slide (outro_slide)
  • NPC Avatar (avatar)

Remove Asset

Choose how you want to remove this asset.

Send to Recycle Bin

This will remove the file from all linked content and send it to the Recycle Bin.