About this app
Generate frequencies in the audio range from 20Hz up to 20kHz. Test your hearing and compare with your friends. Use it to tune your instrument or simply annoy your neighbour's dog. Test audio equipment using a fixed frequency or a frequency sweep that sweeps the frequency in a logarithmic scale from 20Hz to 20kHz. The frequency can be selected by turning the knob or by entering the exact desired frequency using the keyboard.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 19, 2026 · 8:34 AM Free
Screenshots
