Tone Generator+ Freq
Sine Wave Sound Maker
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Generate precise audio tones from 20 Hz to 20 kHz. Sine, square, and sawtooth waves for testing, calibration, and tuning.
Tone Generator+ Freq produces precise audio tones at any frequency you choose. Generate sine, square, sawtooth, and triangle waveforms for testing, calibration, tuning, and audio experiments.
Set your desired frequency with a precise slider or type the exact Hz value. Adjust volume and select from multiple waveform types. The app generates clean, stable audio signals through your iPhone speaker or connected audio output.
Ideal for speaker testing, audio equipment calibration, musical instrument tuning, science experiments, hearing range testing, and sound therapy. Sweep through frequency ranges to test audio equipment response.
Professional-grade signal generation in a simple interface. Supports the full audible range from 20 Hz to 20,000 Hz with smooth, glitch-free output at any frequency.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Performance and stability improvements
- Updated ad personalization handling for EEA users
The developer, Kyu-Hee Jang, 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:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Kyu-Hee Jang
- Size
- 41.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- Contains
Advertising
- Copyright
- © Copyright 2026 Simon Jang. All rights reserved.