Tone Generator

Generate pure sine wave tones across the full audio spectrum with Tone Generator, the essential tool for anyone working with sound. Whether you're testing your hearing, tuning instruments, conducting science experiments, or evaluating audio equipment, this app delivers precise frequency control from 20Hz to 22,000Hz.

Discover your personal hearing range by testing the lowest and highest frequencies you can perceive in each ear. Musicians will appreciate the ability to verify instrument tuning—check if your guitar's top string matches the standard Low E at 440Hz, or dial in any frequency your instrument requires. Students and researchers can explore acoustic principles by finding the resonant frequency of objects like wine glasses or other materials. Audio engineers and home theater enthusiasts can test subwoofer performance and identify exactly which frequencies their equipment supports.

The interface puts you in complete control. Adjust the frequency using a responsive slider, or use plus and minus buttons for precise incremental changes. An on-screen volume slider lets you manage playback intensity independently from your device's system volume, giving you safe, careful control during hearing tests or delicate audio measurements.

Built by the audio experts at TMSOFT—the team behind the acclaimed White Noise app—Tone Generator combines professional-grade functionality with intuitive design. Whether you're an audio professional, musician, educator, or curious enthusiast, Tone Generator delivers the accuracy and ease of use you need for reliable sound testing and frequency exploration.