4.3.10
2023-10-14
• Minor changes in app design.
4.3.9
2023-09-09
• Bug fixes.
4.3.8
2023-08-27
• Bug fixes.
4.3.7
2023-08-20
• Minor changes in app design.
4.3.6
2023-03-18
• Adaptation for iPhone 14 Pro.
• Added black color theme.
• Changing the start frequency of the logarithmic scale when zooming (moving along the logarithmic scale when zooming).
• Fixed not working downsampling to 8 kHz for "Mic" axis.
• Changed strobe algorithm for external accelerometer ("Mic"). Changed the trigger conditions for the strobe.
• Other bugs have also been fixed.
4.3.5
2022-07-03
• Minor changes in text design.
4.3.4
2022-04-11
• Minor changes in text design.
4.3.3
2022-03-14
• Minor changes in text design.
4.3.2
2022-01-26
• Bug fixes.
4.3.1
2021-11-01
• Minor changes in text design.
4.3
2021-04-10
• The max length of the data displayed on the time scale has been increased (for bluetooth accelerometer and mic accelerometer).
• Bug fixes.
4.2
2020-10-25
• Exponential spectrum averaging.
• Automatic stop by timer.
• Access to saved files through the iOS Files app.
• Autosave data when a threshold is exceeded or by timer.
4.1
2020-09-02
• For the linear scale, the algorithm for selecting the frequency range was changed.
• Export of all the recent raw data.
• Save of all the data.
4.0
2020-06-19
• Collecting recent data (last 10 minutes (for X, Y, Z)).
• Moving over all collected data. The amplitude of the waveform can be changed in the vibration wave mode.
• Changed the direction of calculating the ordinal number of points on the time scale (vibration wave mode).
• Buttons for quick loading and comparing saved files.
• Values of any point for logarithmic scale.
3.3
2020-05-03
• Multiple time axes for vibration wave.
• List of frequency peaks. If several peaks have a common base, then they are considered as one peak. The minimum height of the peak for octave bands is 2 dB.
• Interpolation of frequencies in the list of peaks. To interpolate the frequency of the peak, select the Gaussian window (the accuracy of determining the frequency can increase by 10-100 times). The calculation is not done for the extreme bins or if the adjacent bin is zero.
• Calculation of the amplitude (in the list of peaks) using neighboring bins (to compensate for spectral leakage and use of the window). The number of bins used for calculation is written in brackets.
• Added windows (Gaussian window and Flat top window). Removed the sine window (please let me know if you need this option).
• Automatic stop in the spectrum mode. Now you can stop data collection when the start of the fading signal reaches the end of the FFT buffer. The beginning of the signal is not calculated accurately (just like with an automatic stop in the vibration wave mode).
• A more detailed zoom level for the vibration wave (time scale).
• Changed the FFT size range for the bluetooth accelerometer. Removed 65536 (please let me know if you need this option) and added 512.
• Bug fixes.
3.2
2020-02-26
• Dark theme.
• And other small features.
• Bug fixes.
3.1
2019-09-02
• Root mean square (RMS, for vibration) or average value (AVG, for absolute values) for vibration wave.
• Calibration of the built-in accelerometer. Need EXCLUSIVELY for measuring absolute acceleration values (gravitational acceleration).
• Saving the measurement results in the application.
• Selects the sampling rate of the built-in accelerometer.
• Bugs fixed in the octave scale, data export (low file writing speed).
• Changing the area of calculation of the maximum value for a vibration wave.
3.0
2019-07-11
• FFT size (for built-in accelerometer): 64, 128, 256, 512, 1024, 2048, 4096.
• Logarithmic frequency scale.
• Linear frequency scale with maximum details (there is a choice for the displayed frequency range).
• Values of any point (for linear frequency scale, octave bands and vibration wave (at maximum detail)).
• Octave bands (1/1, 1/3, 1/6, 1/12).
• Window functions (Blackman, Hamming, Hann (Hanning), Blackman–Nuttall, Sine window).
• Peak hold.