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

One-liner

A simple, no-frills app that generates pure tone sound waves at any frequency, designed for testing, calibration, or auditory experiments.

Strengths

Generates precise, stable sine waves across a wide frequency range (20Hz–20kHz)
Minimalist interface with direct access to frequency input and volume control
Highly rated for reliability and accuracy in audio testing scenarios
Supports background playback and continuous wave generation without dropouts
Popular among users testing hearing thresholds, speaker response, or ultrasonic frequencies

Weaknesses

No visual waveform or spectrum display — users can't see what they're generating
Limited to sine waves only; no option for square, triangle, or sawtooth waves
No export or recording functionality — cannot save generated tones
UI feels outdated; lacks modern design polish or accessibility features
No built-in presets or common frequency references (e.g., A4=440Hz, 17kHz for dog whistles)

Opportunities

Add visual feedback (oscilloscope-style display) to help users verify frequency output
Introduce wave shape selection (square, triangle, sawtooth) for broader use cases
Include preset library with common frequencies used in music, science, and animal communication
Enable tone recording and export to share or analyze later
Build a companion tool for hearing tests or speaker calibration using known reference tones

Build ideas

Competitors

AI-generated brief · 5/12/2026, 10:56:10 PM

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