Learn Korean vocabulary with structured lessons from the Yonsei Korean Language textbook. Practice with multiple modes for varied review. Track progress through daily check-ins and share achievements via printable posters.
Learn English phonetics with 48 sounds grouped into 24 pairs for clear differentiation. View mouth diagrams, pronunciation tips, and key points. Access native speaker audio recordings. Combine phonetic study with vocabulary and example sentences.
Learn Japanese vocabulary with customizable word lists and detailed entries including readings, meanings, and examples. Practice with three modes to reinforce memory, adjust difficulty, and track progress.
Record audio and play it back instantly. Reverse audio playback with a single tap. Adjust playback speed and share recordings directly. Save voice memos and use as a voice recorder. Supports both voice recording and playback functions.
Convert numbers between , , hexadecimal, and octal formats. Input a value and select the target format for conversion. Display results clearly with error handling for invalid entries.
Allows users to interact with colorful to enhance learning experiences. Supports video and book content from PreschoolProdigies.com. Enables sound exploration and rhythmic engagement for young learners.
Provides detailed character profiles from the Eastern Project, including over 100 characters. Includes information on ZUN's works and hidden history. Features ongoing updates, user feedback options, and links to the developer's website.
Listen to 200+ music compositions from Baroque, , Romantic, and Modern periods. Play, pause, and skip tracks. No ads. Sync with Apple Music and Spotify.
Learn Chinese with animated stroke order, audio pronunciation, and detailed explanations. Search by characters or phrases for instant results. Access over 20,000汉字 with pinyin and radicals. Collect tricky characters for review.