radioCREEP vs Simple PDF Assistant

RADIO CREEP: Audio Signal Analyzer transforms your iPhone into a professional-grade acoustic analysis tool. Built with Apple’s high-performance Accelerate Framework (vDSP), it enables researchers, audio engineers, and students to record audio and instantly generate core signal processing metrics for deep insights into sound dynamics. Key features include: - Real-time recording and analysis: Record up to 90 seconds of audio directly on your device. The app analyzes the recording rapidly upon stopping. - Loudness dynamics (RMS profile): View a detailed plot of the Root Mean Square (RMS) energy over time, showing normalized loudness dynamics and identifying patterns of steady sound (music) versus transient spikes (speech/sports commentary). - Acoustic stability score: Automatically calculates a stability metric based on the variance of the RMS energy, predicting the content type (scores below approx 0.15 indicate steady Music; higher scores suggest dynamic Talk/Sports). - Frequency fingerprint (Average FFT): Instantly compute and plot the Average Fast Fourier Transform (FFT) magnitude spectrum, revealing characteristic frequency components masked.

Simple PDF Assistant is your all-in-one PDF editor for iPhone. All processing happens locally on your device — your documents never leave your phone. POWERFUL TOOLS: • Viewer — View and search PDFs • Merge — Combine PDFs into one • Split — Split PDF by page or chunks • Extract — Select and extract specific pages • Rotate — Rotate pages 90°, 180°, or 270° • Compress — Reduce PDF file size • PDF to Images — Export pages as PNG or JPEG images • Watermark — Add custom text watermarks • Password Protect — Set open and owner passwords • Edit Metadata — Update title, author, subject, and keywords • Reorder Pages — Drag and drop to rearrange • Images to PDF — Convert images to PDF WHY CHOOSE US: Complete Privacy — On-device processing, no uploads Works Offline — No internet needed No Registration — Start instantly Clean Design — Intuitive, no learning curve Download Simple PDF Assistant and take control of your documents today.