Frequency Generator: Tone A4
Tuning Fork & Sound Tool 20kHz
Free · Designed for iPad. Not verified for macOS.
Generate precise audio tones with adjustable frequency and volume. Use as a tuning fork for musical instruments, pitch reference, and everyday sound testing.
Frequency Generator - Tone and Sound
Generate audio tones, explore sound frequencies, and find the right pitch with a simple, easy-to-use frequency generator.
Whether you are tuning a musical instrument, checking a reference pitch, experimenting with audio frequencies, or exploring sound, this app gives you convenient control over the tone you hear.
FREQUENCY GENERATOR
Generate sound at an adjustable frequency and explore different pitches. Use the frequency slider or enter a value directly to find the tone you need.
TONE GENERATOR WITH VOLUME CONTROL
Adjust the sound volume to suit your needs. Fine-tune your listening experience while experimenting with different frequencies and pitches.
TUNING FORK AND MUSICAL PITCH REFERENCE
Use your phone as a digital tuning fork and pitch reference for musical practice.
The standard reference tone of 440 Hz corresponds to A4, also known as concert A. This is a widely used reference for tuning musical instruments. Explore other frequencies to find the tones you need.
EXPLORE AUDIO FREQUENCIES
Discover how changing frequency affects the pitch of a sound. Move between lower and higher tones and experiment with different audio frequencies for music, sound exploration, and everyday listening.
WHY USE FREQUENCY GENERATOR?
- Adjustable sound frequency
- Direct frequency input
- Adjustable volume
- Animated visual feedback while generating tones
- Convenient audio pitch reference
- Simple controls for quick access to sound settings
WHO IS IT FOR?
Musicians can use a reference tone while practising and tuning instruments.
Music students can explore pitch and the relationship between frequency and musical notes.
Audio enthusiasts can experiment with generated tones and different frequencies.
Everyday users can quickly generate a tone at a frequency of their choice.
SIMPLE AND EASY TO USE
Open the app, select your frequency, adjust the volume, and generate your tone. Whether you need a tuning reference or a flexible frequency and sound generator, the essential controls are right at your fingertips.
Download Frequency Generator and explore the world of sound, one frequency at a time.
Ratings & Reviews
Improved performance and stability for a smoother tone generation experience. Fine-tune frequencies and volume with ease.
The developer, Krzysztof Gwiazda, 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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Krzysztof Gwiazda
- Size
- 7.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 15 or later.
- iPhone
Requires iOS 15 or later. - iPad
Requires iPadOS 15 or later. - iPod touch
Requires iOS 15 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
4+
- 4+
- Copyright
- © 2026 Krzysztof Gwiazda