Added Spectrogram display. It supports simultaneous display of up to two screens from Waveform / Spectrum / Spectrogram. The screen layout has also been changed. The advertising system has been updated. As a result, banner ads have been changed to a slightly larger size.

Added "Yellow" to "WaveForm Line Color" and "Spectrum Color Type" options.

- Added FFT size 16384. (16384 is available in the Pro version.) - Updated the in-app purchase details. [Old] Always remove ads [New] Pro version (Always remove ads, High-Res analysis: FFT Size 16384, Spectrum Average 4/8.)

Added a "Mic Input" item to the information screen. (Select from [Auto] and [Prefer Built-in Mic].)

Added selecting the waveform line color. (Green, Invert)

- Added the new function "Spectrum Average". Number of spectrum average for a display of spectrum. (init value: 1) Higher value will make the spectrum less noisy and more smooth, at the cost of lower time resolution. - Changed the location of the function "Spectrum Control Direction" to the Information screen.

Fixed minor display issues. [New Feature in Ver.2.0.0] Added "Pitch Meter".

Enhanced display features around the Spectrum View. - Added dB display toggle (- dB / + dB) - Automatically adds frequency (Hz) labels and grid lines when zooming in horizontally

[New Feature] Added "Pitch Meter". (Pitch meter can be set to display or not.)

Updated the ads system.

Updated the system functionality.

- Confirmed to work on iOS 26 and iPadOS 26. - Added the ability to adjust the line width of audio waveforms. (1 to 5 px)

- Added support for selecting background colors (Black, White). - Background operation has been disabled. (This is to reduce unnecessary battery consumption and device load.)

◆ New Features Added the function "Frequency Weighting". This is the filter to apply to the amplitude spectrum results. - Flat (Z-weighting): No frequency weighting. - A-weighting: Frequency response that takes into account human hearing. - C-weighting: Relatively flat response that covers a wider frequency range than A-weighting. ◆ Update "Spectrum Color Type" setting has been moved from the Settings dialog to the Information screen.

Improved UI display.

◆ New Features Added the following features. (These have been added to the settings dialog.) [Peak Hold] Displays the results of holding the past maximum values ​​(peak values) of the amplitude spectrum. [Octave Analysis] Displays the results of classifying the amplitude spectrum into octave bands. Division method: - FFT: Spectral display (conventional method) - 1/12, 1/6, 1/3, 1 octave: Display divided into octave bands (the larger the value, the larger the band width) Calculation method: - Max: Displays the maximum spectrum value in each band - Average: Displays the average spectrum value in each band

Supports background playback of the audio signal and the noise signal.

◆ New Features The following features have been added to the settings dialog. [Spectrum X Scale Type] Added a function to select the display method for the X-direction (frequency) of the amplitude spectrum. - Linear : Distributed at equal intervals - Log : The intervals increase logarithmically [Spectrum Zoom Direction] The amplitude spectrum can be enlarged in the X direction (frequency). Added a function to select the zoomable direction from the X-direction (frequency)/Y-direction (amplitude). (For ease of use, we have made it possible to zoom only in the selected direction.) [Spectrum Color Type] Added a function to select the color scheme of the amplitude spectrum bar. (Green, Colorful) ◆ Improvements - When the microphone input is stopped, you can statically check the display of the audio waveform / amplitude spectrum by changing "View Type" or zooming. - Adjusted the color of the bars in the amplitude spectrum to a more visible color scheme.

Fxed some bugs.

Added "Sampling rate" display to Information screen.

Added the ability to set the microphone state (off/on) when launching the app. (Previously, the app was launched with the microphone on.)

The system has been updated.

Fixed minor behavior.

Fixed the system aspects. (Please update.)

Added a function to select the Bluetooth connection policy. Select from the following items. (Initial state: None) - None: No Bluetooth connection is made. - HFP (Hands-Free): Supports input/output for calls to Bluetooth-connected devices. Since input data via Bluetooth is processed, the update speed of the waveform display will be slow. - A2DP (Advanced Audio Distribution): Supports output of advanced audio distribution to Bluetooth-connected devices. The audio signal/noise signal generated by this app will be played to the output destination connected via Bluetooth.