No good
Get with it and put useful test tones that people are using nowadays
Response from developer
Sorry to hear that! According to your comment, we updated the app to support the use of below 20Hz.

Generate precise audio frequencies for various purposes, from tuning instruments to cleaning water from speakers. Explore different waveforms and customize sound generation for unique audio experiences. Elevate your audio quality and functionality.
1.0.26
November 18, 2025
- Bug fixes and performance improvements. For further suggestions or to share your feedback, visit More > Contact Us or Feature Requests.
MoreUse all features without limits!
Sorry to hear that! According to your comment, we updated the app to support the use of below 20Hz.
Tone Generator Speaker Cleaner is a utility app that allows you to generate a wide range of audio frequencies, clean water from your device's speakers using sound waves, and tune musical instruments.
The app can generate frequencies ranging from 1 Hz up to 40,000 Hz. You can input a specific hertz value or select a note and octave for a desired pitch.
Yes, the app uses high-frequency sound waves to effectively remove trapped moisture and water from speakers, addressing muffled audio issues.
Tone Generator Speaker Cleaner supports the generation of sine, triangle, sawtooth, and square waveforms, allowing for diverse sound creation.
The app is free to download and use, but it offers in-app purchases for subscriptions that unlock full features and provide access to premium content.
Subscription plans include Weekly and Monthly options, with different tiers like Premium and VIP. Some plans offer free trial periods of 3 or 7 days.
Subscriptions can be managed, and auto-renewal can be turned off by going to your App Store Account Settings. Auto-renewal must be disabled at least 24 hours before the end of the current billing period.
Tone Generator Speaker Cleaner is available for iPhone, iPad, and iPod devices.