TextCharToolbox

TextCharToolbox is a fully offline text processing app featuring 5 core tools: Character Count Real-time statistics for Chinese characters, English letters, digits, spaces, punctuation marks, and line count. Supports 100,000+ character text processing. Text Formatting One-tap removal of extra spaces, newlines, or both. Perfect for cleaning up content copied from web pages and PDFs. Case Conversion Convert English text to UPPERCASE, lowercase, or Capitalized format with automatic sentence boundary detection. Chinese Character Conversion Bidirectional conversion between Simplified and Traditional Chinese with a single tap. Special Symbol Library Browse 12 categories with 300+ commonly used symbols including math, currency, arrows, shapes, and more. Tap to copy to clipboard. Highlights • One-time purchase, free forever, no ads, no registration required • Fully offline — no internet connection needed • No account registration — open and use immediately • Bilingual interface (Chinese / English) • Dark mode / Light mode adaptive