Calculy vs Smart PDF Compressor

Calculy is a free calculator for iPhone and iPad. Small yet mighty and totally ad-free. Go beyond basic calculations with Calculy’s full range of functions: • unit converter with more than 220 units from 16 sections (including currencies with daily updated rates) • percentages • square, cube and nth power • square root, cube root and nth root • logarithm, natural logarithm, common logarithm • factorial, reciprocal • rounding • exponentiation to the power of 2, 10, e • Pi, e Euler's number, random numbers • sine, cosine, tangent • arcsine, arccosine, arctangent • hyperbolic sine, hyperbolic cosine, hyperbolic tangent The expanded layout for iPad handily displays all available function keys. Hardware keyboard is supported on the iPad.

Compress PDF files instantly on your iPhone and iPad. Smart PDF Compressor reduces file sizes by up to 95% while maintaining readable quality — perfect for sharing via email, messaging apps, or cloud storage. ALL PROCESSING IS LOCAL Your documents never leave your device. No internet connection required, no cloud uploads, no data collection. Complete privacy guaranteed. KEY FEATURES - Smart Compression: Automatically detects scanned vs. digital PDFs and applies optimal compression settings - Three Presets: Light (best quality), Standard (balanced), and Maximum (smallest file size) - Batch Compression: Compress multiple PDFs at once with progress tracking - Full Control: Adjust image quality, resolution (72-300 DPI), and grayscale conversion - Side-by-Side Preview: Compare original and compressed versions before saving - File History: Browse, preview, rename, and share all your compressed files - Native iPad Support: Full iPad experience with tab bar navigation HOW IT WORKS 1. Tap + to select a PDF from Files 2. Choose your compression level or customize settings 3. Tap Compress and see the results instantly 4. Share or save your compressed PDF PERFECT FOR - Reducing email attachment sizes - Saving storage space on your device - Compressing scanned documents - Preparing files for upload to web forms - Sharing large PDFs via messaging apps Smart PDF Compressor uses Apple's PDFKit and advanced image processing to deliver fast, reliable compression without sacrificing readability.