Frequency Meter PRO

I just need an app that accurately tells me the frequency of s tone played through a speaker. This one kind of does that, for the first note presented to it, but fails to change its output when the tone changes. It sort of works if I keep shutting it down and restarting it, but that’s not very convenient. Also, it would be nice to have some documentation as to what the controls are supposed to do and what the display is supposed to indicate.

DO NOT BUY THIS APP! I was trying to determine if the frequency on my keyboard was accurate (I can change the frequency on my keyboard). I’ve done this in the past with other frequency detectors. Even though you can actually HEAR the difference, this app does not register this change. For instance at A=440, the app says 441.39. When my instrument is tuned to A=300, this app says 441.39. Only when I tune to A=190 it changed to 417. So absolutely useless.

Cannot get repeatable date using a tuning fork. Do not purchase!

Trying to use it as a pianotuner it is way off in the meqsurements !!!

useless

Does not work

No guidance on how to get it to work. Doesn’t deserve any form of rating.

It does not display accurate measurements.

I wish I read the reviews before I bought this. My own stupidity.

It does work as a frequency meter but is somewhat limited. It doesn’t work on frequencies below 150 HZ . I tested it on 150HZ then 120 HZ. It showed a harmonic of 120 HZ. 99 cents would have been a fair price. Especially since it appropriated the fluke meter style to elicit confidence and imply compared results.