Simple. Does the job.

I use this to lead a capella singing in my church, and for that it works wonderfully. The F-F inaccuracy is not an issue for me because Im always using C-C.

There are a couple of enhancements Id like to see:

1. Seems like the volume is dependent on a combination of both the volume slider on the app and the ringer volume of the phone, regardless of whether the mute switch is on or off. Its easy to lose track of what the volume is going to be until youre standing up in front of the congregation and the volume is either too quiet...or TOO LOUD.

2. A feature Id love to see is the ability to enter a small list of song numbers and pitches that can be recalled later. I would imagine this would be useful for song leaders, band musicians, etc. Id like to enter 6 to 8 songs, each with a number, a title, and a pitch. Then replace the portion of the screen where the "F-F" vs "C-C" switch is with controls to show the currently selected list item, advance to next/previous item in the list, and edit the list. Each time a new list item is selected, the pitch is selected - not played - on the pipe (maybe by rotating the pipe, or adding the white rotating arm found on some pipes). Then the user knows what pitch to sound without having to look at the music. The ability to save/recall multiple lists and import lists would be even more helpful.

The Sunday after installing this app, I truly did forget to bring my pitch pipe to church, and had to "go live" with iPitchPipe unexpectedly. It worked great and has ever since!

H-D Dave about iPitchPipe, v2.1