A few years ago I designed an iPhone app called the Delay Genie that determined the delay time for any tempo along with full note, dotted and triplet note subdivisions. Unfortunately, the publisher decided to no longer support the app on later versions of iOS, so it's no longer available.
I've searched for a substitute for a while with no luck, but finely found one that's even better called Audiofile Calc, and the best news is that it's free!
Audiofile Calc figures out delay times with ease but goes way beyond that to allow you to find things like Note Length, Bar Length, Song Length, Beats to Tempo, Time to Samples, and Samples to Time. You can also compare tempos, and add and subtract timings, which is great for determining the running time of an album.
Audiofile Calc doesn't stop there though. It also figures out pitch calculations like Note Name to pitch, MIDI Note to pitch, Frequency to pitch and Wavelength to pitch as well as Timecode calculations like Frames to Timecode, Convert Timecode, and Change Timecode.
There's also electronic calculations like Compare Power and Compare Voltage, acoustics calc like Distance to Time, Time to Distance, Sound Pressure Level (SPL) and Panning, as well as a handy file size calculator too.
I'm not a big one for apps, since we all seem to have so many of them that we don't use, but this is one well worth having on your phone. You'll constantly find it useful for something in your audio life.
Audiofile Calc was developed by Audiofile Engineering, the same people that created the very cool Triumph mastering workstation software. The app requires iOS 7.0 or later. It's compatible with iPhone, iPad, and iPod touch. And again, it's FREE!
A big thank you to Russ Hughes at Pro Tools Expert as well as everyone at Studio One Expert for this find.
Download Audiofile Calc here.