Perfect App for narrow range of uses
Was building new speaker system, larger cabinets, twelve inch Woofers etc. Used to own a proper signal generator years ago. I used this app output to Apple Tv then amp to check vibrations and response for low frequencies......you can select fixed freqs, 'Wobble' the freq up and down by 5 Hz, and slide. to get a very precise frequency.....all below 200 Hz. It helped isolate some vibration in the cabinet and also the ceiling, where the recessed Light housings vibrated. It allows you to overlap white or brown noise, add a drum to push the bass testing..... All in all not much use for me beyond this type of testing, but was worth the full buck for the specific testing I needed. Starting a large 18 inch sub woofer project, and will be needing this app again. I recommend this app, if you are looking for this type of testing app.