Frequency counter based on the microphone input. Counts when the input rises or falls past a set level and converts into into frequency or a time period. FOR INDICATION ONLY. Results depend on your device and its hardware. If you just want to know the frequency of a sound with harmonics (e.g. musicial instrument), a FFT based app such as keuwlsofts spectrum analyser or guitar tuner will be better. This app can provide more accurate frequency measurement for single frequency input signals. Features include:
Display of triggered event count and frequency or time period.
Graph of input signal, 2.5 ms/div up to 640 ms/div.
Gate time of 0.1s, 1s, 10s or 100s.
Gain from x1 to x1000.
Trigger on rise or fall.
AC or DC coupling.
Set a noise level so new event is not triggered until the signal has first passed this level.
More details can be found on the website.
v1.19 Updated to use newer code methods to better target and run reliably on newer devices.
Updated to use newer code methods to better target and run reliably on devices in 2024. You can now select between audio source (default, mic or unprocessed) in the settings.
v1.15 Updated to use newer code methods to better target and run reliably on devices beyond 2023.
v1.13 Updated to use newer code methods to better target and run reliably on devices beyond 2022.
v1.14 Minor bug fix.
A few minor changes/bug fixes.
Updated to target newer devices and added permission check for audio access.
Removed exit ads, replaced with a banner ad.
Added settings button and option to reset to defaults.
And a few more other minor bug fixes & tweaks.
Changed ad method: ads on exiting app only.
Made movable to SD card and added link to privacy policy
zopo Color F2
