Frequency Counter Pro App Reviews

Funktioniert wie es soll!

No functionality, just a useless Graph, do not buy ...

zeigt nichts an, null garnichts. abzocke.

This here is a nice wee App that most of you "sound freaks" will enjoy. Frequency is easy and simple to use; just point your iPhone mic towards the noise source and Frequency will display the waveform and the frequency in Hz on your iPhones display. Im heavily involved with the music scene and I find that this App is quite accurate in showing me the frequency of a certain instrument when mixing live audio. I actually put it to a test against a signal generator and the result was ok. Usually it was off just 1 to 3 Hz in low to mid range but after going past 2kHz it couldnt keep up. Going past 2.35kHz is where Frequency lost it. In conclution, the signal range in which Frequency can operate is pretty narrow but in any case its a cool App that Ill be carrying in my pocket.

Theres free apps better than this. This one doesnt do much and isnt accurate.

Not worth the pewder to blow it to hell as far as i can see

The app is so sensitive its actually tough to get any kind of reading. It just doesnt work. Good design though - not worth the $ until its fixed.

Just dont work. No access to microphone! Tech support dont know how to fix. Dont waste your time and money!

Doesnt do anything except waste space. This app is trash.

Apple needs to add a negative star to better rate apps like this. Not only does the app itself do nothing of value, the developers " instructions/help" mode is useless. This shows how little effort and thought went into development.

I bought this to measure the frequency of the tones from a five-tube wind chime I made. My iPhone is a 5C. The scope display is of little use, but the frequency shown below the scope is stable and spot on. My design was tp produce and E note at 659 Hz; this app measured it at 658 Hz; damned good. I found no other app that offered the measurement of an arbitrary frequency. ANd this was only $0.99 I wonder if the other reviewers that faulted this app have a defective mic.

Does not do what it says it will. It very rarely gives a measurement in hertz. Only shows a useless and unlabeled graph.

Ive only had this app for a minute or so now, but it works well. It is a bit odd, in my opinion, how the frequency only shows up when a tone is being played. Backround noise will not show a frequency. This makes sense, of course, but I wish it said something like "Frequency: --" instead of merely a blank spot where the frequency goes. I was very pleased to find that it actually said the note name in addition to the frequency, like A# or whatever. I have yet to test it with a piano, but with whistling notes, it appeared to respond rather well. All things considered, an excellent app.

Very simple - downloaded it for an emergency violin tuning and it worked flawlessly - thanks!

No numbers, just pattern

Tried to check this against several accurate tuning forks and instruments. Not worth the buck I paid for it.

My first review: it works great!

Does exactly what it should. Shows hertz and note of any sound. Perfect for my daughters science project.

Although I seldom review an App, I was so intrigued by the Frequency Counter Pro that I had to comment. I tested this counter on an iPhone-4 as well as the newest iPad using iOS6. I found the displayed frequency to be quite accurate between approximately 75 and 2000 Hz. Beyond 2kHz, the display began to show errors, but interestingly these were harmonically related to the test frequencies. For example, a 4000 Hz tone may display as 2000, or a 2800 Hz test tone may display 400 Hz (2800 being the seventh harmonic of 400) perhaps. Maybe Cat Eater, the developer can explain this more thoroughly? Other than this quirk, the graphics are clear and simple, with a retro oscilloscope look. I am however puzzled by the red indicator lamp below the display. It looks like the power on/off button on an Apple computer, but does nothing if you touch that area of the screen. The only touch screen user interface is to control the amplitude of the displayed signal. For example, if you were sampling a quiet audio signal, you would set the amplitude to the high mode, while low mode may be best for loud or noisy environments. My only wish, besides showing actual frequency up to perhaps 10 kHz, would be a display hold button. Bottom line is that the App is interesting to play with, and would be useful in several areas where you need to identify an audio tone or musical note. Cliff K.

No, numbers, no measurement of background noise frequency, no instructions, of no value. I waster the purchase price.