Tone generator 4+

michael heinz

Designed for iPad

    • 4.0 • 138 Ratings
    • Free
    • Offers In-App Purchases



Generate various periodic signals with different waveforms with adjustable frequency and amplitude. These are used to test electronic circuits such as amplifiers and filters. Also suitable for musicians to tune their instruments. As soon as a note sounds, the integrated tuner recognizes the pitch and displays the note name and deviation. For any instrument that produces an even tone. A metronome also helps you to practise.
Drive insects away or compare your hearing ability with your friends and relatives and share your results! Or watch others straining their ears to find the sounds that cannot locate you. Party fun is guaranteed!

optional features (Purchase):
- free of Ads
- manual frequency input
- support app functionality for connected Bluetooth devices, e.g. speaker
- different signals
- white/pink noise
- tuner for tuning instruments (real-time tone recognition C1-C8) with tuning whistle
- metronome for a steady tempo
- note/tone for frequency
- Left/right channel, stereo
- create a tone sequence for playing several different frequencies in particular time slot
- loop for tone sequence
- save and delete tone sequences
- load saved tone sequences
- send your tone sequence as an audio file (.caf format)
- option to compress audio files

Attention: If you want to share your results with others, first test your audible frequencies, then mark under the speakers your lowest audible tone and your highest audible tone (stored only temporarily). A small hint: the chart will show you what other frequencies of your age are still possible to reach.

What’s New

Version 2.4

- support app functionality for connected Bluetooth devices, e.g. speaker
- intern changes

Ratings and Reviews

4.0 out of 5
138 Ratings

138 Ratings

Rich xsz ,

If you are willing to spend $0.99...

you end up with an easy to use app that works well, but has no bells or whistles—well some frequencies sound like whistles to me ;)

Kalamata71 ,

Tone generator

I love this app the only problem that I have and probably everybody else has is that you cannot find tune the frequency that you want the sliding button you guys made it’s not easy to get the perfect frequency number that you’re looking for if you can put a manual up and down button that will be amazing please try to fix this is an awesome app thank you in advance.

bcwalnja ,

Limited function, ruined by ads

I wanted to have an app for testing speaker system response, I thought this app would do it. Seemed ok at first, but without paying to unlock, the app is really slim and only has one function - play a tone. Then suddenly a full screen ad took over that I couldn't seem to close without just terminating the app. That's a deal breaker for me. I'll find a better app.

App Privacy

The developer, michael heinz, 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 Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Data Linked to You

The following data may be collected and linked to your identity:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • User Content
  • Diagnostics

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

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