TunerTime is a free Android application developed by galexand under the category of Multimedia and subcategory of Music & Radio. It offers two powerful tools for visualizing sound: a stroboscopic tuner and an FFT spectrum analyzer.

The stroboscopic tuner is a unique feature of TunerTime. You can select the note you want to tune and it will display a red-green bar indicating how close you are to hitting the exact frequency. A perfectly horizontal bar indicates that you are in tune while a sloping down or up bar indicates that you are flat or sharp, respectively. This tool is particularly useful for piano tuners as it offers a high level of precision.

The second tool is an FFT spectrum analyzer. It allows you to see how the complete spectrum of sound evolves over time. While this is not a unique feature, TunerTime's analyzer is precise and reliable.

Overall, TunerTime is a powerful tool for anyone looking to visualize sound in a precise manner. While it may not be the simplest tuner to use, it is definitely one of the most precise. If you have any questions about using it, the manual is available on the developer's website.