great basic frequency generator – Frequency Sound Generator Review

i love this app. very clean and simple, easily generate and manipulate up to three overlapping specific frequencies. there is not a lot to it but you can create some lovely drones and i like the knobs to control the frequencies in hz. would love to see recording (preferably in 48000+) and the ability to keep the drone playing in the background when the app is minimized added as future features.
Review by All names taken. on Frequency Sound Generator.