No matter if you need to generate high frequency sounds or low frequency sounds, our SONIC HZ GENERATOR is your #1 best solution. No matter if you need to test your speakers or tune your instruments, our SONIC HZ GENERATOR is your #1 best solution. - Sonic Generator 0～25KHZ Any of these frequencies can be accurately entered - Instrument Tuner Use this app as a musical instrument tuner when playing or producing frequencies. Other USES: This sound generating app can be used in multiple use cases: ● You can test your hearing. A human being is capable of hearing frequencies in the average range of 20Hz-20000Hz. This range is getting smaller by age, so it’s interesting to sound test your hearing capabilities. ● Testing your speakers for the high end (treble) and low end (bass) tones.