The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Audiofile Engineering:
Audiofile Calc is a full-featured musical calculator and an indispensable utility for engineers, musicians, music students and teachers, producers, DJs, video and broadcast engineers and live sound engineers. Audiofile Calc contains 23 easy-to-use calculators.Audiofile Calc is a 100% free app created by Audiofile, an industry-leading, boutique technology company building apps to power the world's musicians and engineers.Calculators included in Audiofile Calc:Length- Note Length- Bar Length- Song Length- Beats to Tempo- Time to Samples- Samples to Time- Compare Tempos- Change Tempo- Sum Times- Subtract TimesPitch- Note Name to- MIDI Note to- Frequency to- Wavelength toTimecode- Frames to Timecode- Convert Timecode- Change TimecodeElectric- Compare Power- Compare VoltageAcoustics- Distance to Time- Time to Distance- Sound Pressure Level (SPL)- PanningFiles- File Size