Quiz Cutter vs Frequency Analyzer

Quiz Cutter PDF Test Maker Quiz Cutter helps educators create custom test papers from existing PDFs. Extract questions, edit images, organize content, and export professional test documents with ease. Key Features: PDF Upload and Extraction Upload PDF files directly from your device Easily navigate through PDF pages Extract high-quality images from any page Smart Selection and Editing Tools Select specific areas from PDF pages to capture individual questions or sections Erase unwanted parts of captured images Add custom text annotations to your questions Edit and refine captured questions before saving Add answer choices (A, B, C, D, E) to each question Automatically track answers for instant answer key generation Advanced Organization Automatically organize extracted images by their PDF source Use folder-based organization to categorize your materials Enjoy easy navigation through your personal question library Select, delete, and manage multiple items effortlessly Professional Test Creation Create clean, two-column test layouts Add custom headers and footers to your documents Customize adjustable spacing between questions Enable automatic question numbering Automatically generate an answer key on the final page Preview your test paper before exporting Export the final PDF directly to your device Perfect for Educators Whether you're creating practice tests, combining questions from multiple sources, or customizing existing materials, Quiz Cutter streamlines the entire process. Organize questions by topic, edit content on the go, and generate professional-grade test papers in minutes. How It Works: Upload a PDF containing test questions. Navigate through the pages and select the questions you want. Edit the captured images if needed and assign answer choices. Organize your new questions in your gallery. Select the questions you want and export them as a brand-new PDF test! Transform any PDF into a custom test paper with Quiz Cutter today! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Frequency Analyzer: SpectraLab is a professional-grade audio analysis tool designed for real-world measurements, sound diagnostics, and signal verification — completely rebuilt as a native iOS app with a brand-new Liquid Glass design. Whether you're tuning a room, analyzing noise, or working with audio signals, SpectraLab provides fast, accurate, and easy-to-read results. KEY FEATURES - Real-time Frequency Analysis Detect dominant frequencies instantly using high-resolution FFT analysis. - Live Spectrum Visualization See how sound evolves over time with a smooth, responsive spectrum graph. - Peak Hold Track the highest detected frequencies over time for deeper analysis. - Spectrogram Visualize frequency content over time with a scrolling waterfall display. - Signal Generator Generate precise tones including sine waves, square waves, pink noise, and white noise. - Play & Analyze Mode Compare generated signals with live microphone input in real time. - Screenshot & Export Capture clean analyzer views and share results instantly. - Home Screen Widget See your latest measurement at a glance, right from your Home Screen. - Custom Presets Save and reuse your favorite generator settings. USE CASES - Room acoustics and speaker tuning - Audio testing and debugging - Music practice and instrument tuning - Environmental noise analysis and documentation - Education and signal learning DESIGNED FOR PRECISION SpectraLab focuses on stability, clarity, and performance. The interface is optimized for both beginners and advanced users, providing clean visuals without unnecessary complexity. PRO FEATURES - Noise Threshold Alerts — get notified the moment sound crosses a level you set, useful for documenting noise complaints or monitoring a space - A-weighting (dBA) — measure noise the way ordinances and regulations do, plus every window function for precise analysis - Extended Spectrogram History — see up to 3 minutes of waterfall history for deeper diagnostics - CSV Data Export — export raw frequency and magnitude data for analysis in Excel, Python, or MATLAB - Professional PDF Reports — share a clean, presentable report of any measurement - Unlimited Export History — free plan keeps your last 10 exports; Pro keeps everything - Larger FFT sizes up to 16k-point transforms for finer resolution - Unlimited custom presets A free trial is available so you can experience Pro before you subscribe. Start analyzing sound with precision today. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/