What this app is. What it isn’t. What you could build.

One-liner

A simple, no-frills app that generates pure audio tones at any frequency in Hertz, designed for tuning instruments, testing hearing, or sound therapy.

Strengths

Precise frequency generation with real-time Hertz display (verified in reviews: 'exact Hz values are spot-on')
Clean, minimal interface focused on core functionality (review: 'no distractions, just tone and frequency')
Supports a wide range of frequencies from 1Hz to 20,000Hz (useful for both low-end testing and high-frequency audio work)
Lightweight and fast—launches instantly and uses minimal system resources
Popular for use in music tuning and ASMR/brainwave entrainment (seen in keywords and review mentions)

Weaknesses

No waveform selection beyond sine wave (review: 'only sine? I need square or sawtooth for testing')
No export or recording feature (review: 'can't save the tone I just made—why not?')
No visual feedback like oscilloscope or spectrum analyzer (review: 'would help if I could see the wave')
Limited customization—no volume control per frequency or preset saving
No dark mode (review: 'bright white screen hurts my eyes during long sessions')

Opportunities

Add waveform options (square, triangle, sawtooth) for broader technical use cases
Introduce a basic recording/export function for users who want to save test tones
Build a visualizer (oscilloscope or frequency spectrum) to enhance user confidence in output
Create presets for common tuning standards (A440, A432, etc.) and brainwave frequencies
Add dark mode and accessibility settings to improve usability in low-light environments

Build ideas

Competitors

Audio Frequency Generator
Tone Generator Pro
Sine Wave Generator

AI-generated brief · 5/12/2026, 1:40:31 PM

First load takes ~10–30s while we generate the brief. Cached afterward.