Edit images by on photos and adding text. Choose from 45 colors and five pen thicknesses. Use zoom editing and undo functionality. Share edited images via email, Twitter, and Facebook.
The app allows users to practice tracing Hangul, including basic vowels, complex vowels, and basic consonants. Traced images can be saved to the iPhone.
Calculate with dual-line display and multi-line input
A with dual-line display showing input and result. Supports multi-line equations and tap-to-move cursor. Saves calculation history with timestamps and labels. Allows emailing calculations and swiping to review previous entries.
Convert (GSM) for 8 paper categories. Enter , select a paper category, and view the converted value instantly. No need to input paper size or additional details.
Solve mathematical problems with fraction, decimal, and equation input. Display results in decimal, rational, , or trigonometric formats. Support up to 16 decimal places for precise calculations.
Documents to create high-quality PDFs with automatic border detection and perspective correction. Enhance images by removing shadows and sharpening text. Extract text using OCR and export as editable files.
Solve , chemistry, and physics problems with step-by-step explanations. Save completed questions and in an directory. Share solutions via Print, SharePlay, or export. Collaborate with others in real time.
Access detailed references with vector images of five scripts including Seal, Clerical, Regular, Semi-cursive, and Cursive. View over 100,000 examples by historical masters such as Wang Xizhi, Yan Zhenqing, and Zhao Mengfu.
Read and listen to books in multiple formats including EPUB, FB2, MOBI, PDF, DJVU, DOCX, RTF, TXT, HTML, CBR, and CBZ. Support DRM-protected PDF and EPUB files. Access audiobooks. Adjust text size and layout. Export pages as images.
Learn vocabulary through space-themed gameplay and interactive flashcards. Practice words with text, audio, and visual icons. Explore categories like numbers and daily topics. Test knowledge with quizzes and track progress over time.