UR vs FNam FFT Spectrogram Analyzer

This application is a secure password manager designed to protect your sensitive information. Your passwords or pin numbers are never stored but re-generated after authentication. For getting started on UR-Vault, please refer link - https://balajikadambi.github.io/UR-Vault/getting-started-ios/. Why UR-Vault? UR-Vault has been built primarily to provide complete privacy and security with transparency. # No personal data is collected or stored by UR-Vault. # No password or numeric pin that is generated for a website/service is stored. # No data can be exported out of UR-Vault in plain text. Features: # Login using Apple account. # Migrate passwords from other password managers # Generate passwords or numeric pins based on custom rules. # Query AI model for password rules for public websites. # Autofill passwords with browser integrations (https://balajikadambi.github.io/UR-Vault/browser-support/) # Store the password generation settings based on custom rules to re-generate the same password later. # Change the password periodically or if it expires with the same generation settings. # Automatically syncs all password settings data between your different apple devices using same Apple ID. # Back up and restore generation settings with encryption when you want to sync data to non-Apple devices. Your data is protected with the following features: # Passwords are never stored. Your secret key or paraphrase required to re-generate the password is also not stored. # Password generation settings for every website with a SHA256 hash of the secret is stored securely in OS keychain. # Backup and Restore functionality encrypts/decrypts the data using AES-256 algorithm with an user provided secret. # Device authentication is required every time for viewing secrets or passwords. # The app is accessible only using a single Apple account. The first sign in determines the account having access to the App. The current account must be deleted from 'Settings' to switch accounts. You have complete visibility and control on how your data is stored or shared. No data is visible without your authentication on the device. Support: https://balajikadambi.github.io/support-form/ Privacy Policy: https://balajikadambi.github.io/UR-Vault/privacy-policy/ Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

■ FNam FFT Spectrogram Analyzer Engineers need tools that are ready to use — anytime, anywhere. FNam FFT Spectrogram Analyzer turns your smartphone into a professional audio analysis tool. Unlike typical sound meter apps, it delivers advanced features like Dual File Comparison and CSV Export for precise post-analysis * completely free, no ads. Real-time FFT & Spectrogram / All processing runs on-device / No audio data uploaded externally. [Video Guide - See it in action] https://youtu.be/72SYLTG0l_8 ■ NEW FEATURES 1. Octave Band View Mode - Analyze sound levels by octave bands. - Choose 1/1 or 1/3 octave band resolution in Settings. 2. Sound Event Logger - Automatically logs sound events when the level exceeds a set threshold. - Can save event WAV files and FNam JSON logs for later review. - Includes a screensaver mode to reduce screen burn-in. ■ KEY FEATURES 1. Real-time Audio Analysis • High-precision FFT (Fast Fourier Transform) Graph. • Time Domain Waveform (Oscilloscope) view. • Fluid Spectrogram for visualizing frequency changes over time. 2. Dual File Comparison (Exclusive Feature) • Simultaneous loading of two WAV files for comparative analysis. • Spectrum Overlay: Visually compare differences using color-coded traces (Blue vs. Magenta). • Instant Calculation: Provides Arithmetic Mean and Mean Difference between signals. 3. Data Logging & Export • Flexible Sampling Rates: Supports various rates (4000Hz, 8000Hz, 16000Hz, 22050Hz, 44100Hz). • High-quality Recording: Audio is recorded and saved as WAV files, strictly matching the selected sampling rate. • Raw Data Export: Exports raw PCM data to CSV format. The exported data maintains the exact sampling rate and duration, making it optimized for post-processing in Excel, MATLAB, or Python. • File Management: Files are stored in the 'On My iPhone\FFT Analyzer' directory. - WAV naming format: Date_Time_SampleRate_Channel.wav ex) 20260219_164715_44100Hz_Mono.wav - CSV naming format: Selected WAV file name_SampleRate_Duration(s).csv ex) 20260219_164715_44100Hz_Mono_44100_5.2s.csv 4. Professional Configuration • Window Functions: Selectable Rectangular, Hann, Hamming, and Blackman windows. • Frequency Weighting: Supports A, B, C, and Z (Linear) standard weighting filters. • Axis Control: Supports both Auto-scaling and Manual range settings (Hz / dB) for precise graph inspection. • Calibration: Independent offset controls for FFT and Time Domain to ensure alignment with professional reference equipment. • Max Peak Hold: Displays and holds the maximum amplitude values across the frequency spectrum. • Octave Band View Mode: Visualizes frequency levels as octave band bars for easier band-by-band analysis. ■ TECHNICAL SPECIFICATIONS • Signal Processing: Anti-aliasing filters are automatically applied during downsampling to ensure measurement accuracy. • Sampling Rate: Supports standard rates up to 44.1kHz (device dependent). • Standards: Implements IEC 61672 frequency-weighting formulas for A/B/C weighting calculations. Note: This app implements IEC 61672 frequency-weighting formulas. Measurement discrepancies compared to professional equipment may occur due to the hardware frequency response limitations of the built-in smartphone microphone. For critical measurements, the use of a calibrated external microphone is recommended.