MultiTone Generator 4+

Frequency and Signal Generator

Thomas Gruber

Designed for iPad

    • 4.6 • 286 Ratings
    • Free
    • Offers In-App Purchases



This is the all-new MultiTone Generator! An amazingly flexible and powerful frequency generator!

Works with Audiobus and Audiobus Remote!

Upgrade to PRO and CREATE up to 16 tone combinations. Play them individually or combined.

PLAY TEST TONES Sine, Rectangular, Triangular and Sawtooth.

PLAY FREQUENCY SWEEP TEST TONES in both directions (minimum to maximum frequency and maximum to minimum frequency).

Use the SWEEP REPEAT / WOBBLE function.

Play back white and pink NOISE.

Fully CUSTOMIZABLE Frequency Min-Max ranges and Sweep time range.

The MultiTone Generator is AMAZINGLY INTUITIVE and SIMPLE!

What’s New

Version 3.2.1

Improvements for Apple Silicon

Ratings and Reviews

4.6 out of 5
286 Ratings

286 Ratings

halfcack ,


I have recently acquired tinnitus. It seems directly related to the use of Kratom which has killed all pain and panic disorder since an accident in 1993. Kratom also knocked down the meds I’ve been on for ten years within five months.

The tone is a C9 or C10 if a piano could reproduce it. C9. I matched it to either C9 or C10 on the using the app.

I’m getting close to the middle of C9 by going up in thousandths. I am getting close.

The app is perfect. The features cover all my uses. I tried the three top apps. Even the lite version is feature laden.

When I finally determine the exact C9 sine wave's frequency. I will know the exact negative wave that will cancel it out.

The app already makes it go away for a few minutes. Only use it with care for this purpose. A little at a time. Short sessions.

If you could invent an app that plays negative sine waves, you would have the cure for tinnitus. The negative wave will make tinnitus disappear. They cancel each other out.

Then, a small ear piece that fits inside the ear, which would be cheap to make, millions would beat a path to your door.

Thank you so very much.

Curt S ,


I use it to silence the neighbor’s dogs when they decide to bark too much. The program runs on my old iPod Touch that sits on our kitchen counter. The iPod is connected via bluetooth to an inexpensive stereo amplifier in our back yard, with each of the amplifier’s channels connected to a tweeter — and each tweeter is pointed at the dogs. When the dogs bark, I activate a high frequency audio sweep (just above the neighbor’s audible range) and the dogs quickly shut up and go inside! Thanks for this very useful application!!!

Psalms 83 ,

Works wonderfully again!

Totally satisfied again with the app, and the customer service. The developer speedily responded within 48 hours, and remedied the issue within a few days of the email. I no longer would like a refund, and the app is once again useful to me. Its back to working when my screen is locked or unlocked.

Please disregard my previous review. This is a 5 star app. Thanks!

App Privacy

The developer, Thomas Gruber, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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