Tone Generator Pro

Contains ads
4.7
12 reviews
Content rating
Everyone
1K+
Downloads
Content rating
Everyone
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About this app

This app generates a constant tone (sine, square, triangle, or sawtooth wave) in the audible frequency range (20 Hz to 22 kHz), which may be adjusted in 1 Hz or 10 Hz increments. In addition, special sounds can be played to remove water from your speakers and to help you relax, meditate, and sleep better. Each of these main sections of our app is on a separate page, and more information about them will be displayed when you tap the About button. What else can this tone generator be used for?

- Tuning musical instruments and testing audio equipment
- To find out what is the highest frequency you can hear
- To interact with your dog and stop him from barking (note: longer exposure to the high-frequency range can damage the dog's hearing).
- To find out the frequency of your pure-tone tinnitus and also to provide some relief from it.
- To induce calm and relaxing thoughts during meditation and to meditate effectively and successfully.

Features:

-- Simple user interface, select, and play the sounds.
-- Two buttons to adjust the volume of the sounds.
-- Swipe left or right to adjust the frequency by 10 Hz.
-- Swipe up or down to adjust the frequency by 1 Hz.
-- Free application, no intrusive ads
-- No permissions are required.
-- This app keeps the phone's screen on.
Tones in the audible frequency range to test your hearing or clean your speaker
Updated on
Jul 4, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

Ratings and reviews

10 reviews
Mark Brasche
July 28, 2026
Works okay. Description says no "intrusive" ads. There are ads. How intrusive they are remains to be seen. Deceptive advertising at best.
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Microsys Com Ltd.
July 28, 2026
Hi! Our 'no intrusive ads' promise means you will only ever see one minimal banner ad - never any hidden or deceptive placements. Developing and maintaining this free app takes a lot of effort, and this minor ad makes it possible. We hope you will consider giving us a better rating! Thank you, Microsys Team.
mgeismar22
January 7, 2026
so far this app is doing well for me. it is easy to use and hasn't failed once so far. I would like to see a future update that can increase the ultra sonic range to 40,000 Hz but I would settle for 25,000 Hz.
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Microsys Com Ltd.
January 8, 2026
Thank you for your feedback and recommendation; we’ll add the extended range as soon as possible. Microsys Team
Roger Nowacki
July 18, 2025
Great for subwoofer cone alignment when replacing foam rubber surround (use 50 HZ Sine Wave).
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What’s new

- More frequency increments: 5, 10 and 20 Hz
- Hearing test and Sweep generator were added
- Independent levels for Master, Left and Right volumes
- Text to speech option was added
- Frequency and volume levels are automatically saved
- Improved functionality, more generators added
- A new, simple and elegant design
- A noise generator was added