GENERATE ANY TONE, FROM 1 HZ TO 40 KHZ

Frequency is a tone generator. Set a pitch by hertz or by note and octave, choose a waveform, and play it. It also plays the low sweep that pushes water out of a blocked speaker.

PLAY A TONE AT ANY FREQUENCY

Enter a value in hertz, or pick a note and an octave and let the app work it out. The range runs from 1 Hz to 40,000 Hz, past the top of human hearing.

CHOOSE YOUR WAVEFORM

Sine, triangle, sawtooth, and square. Each has its own character, and switching between them at the same pitch is the quickest way to hear the difference.

PLAY SEVERAL TONES AT ONCE

Run more than one tone together, each with its own frequency, waveform, and volume, and listen to how they interact.

CLEAN YOUR SPEAKER

Water trapped in a speaker muffles it. Playing a low-frequency tone at full volume vibrates the driver and pushes the water out — the same technique a smartwatch uses to eject water after a swim.

A REFERENCE PITCH TO TUNE AGAINST

Play a note at a known frequency and tune your instrument to it by ear. Frequency plays the reference; it does not listen, so nothing you play reaches the app.

TUTORIALS INCLUDED

Step-by-step guides for generating tones, working with waveforms, running several at once, and cleaning a speaker.

SUBSCRIPTIONS AND AUTOMATIC RENEWAL

• Your subscription includes access to the features listed above.
• Payment will be charged to your Apple ID Account at confirmation of purchase.
• Subscription automatically renews unless auto-renewal is turned off at least 24 hours before the end of the current period.
• Your account will be charged for renewal within 24 hours prior to the end of your selected subscription period.
• Subscriptions can be managed and auto-renewal turned off in your App Store Account Settings.

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SUPPORT

Contact us at info@cooptimizeit.com. We reply within 48 hours.