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 Nigel Crawley Software:
Use your iPhone to tune your Guitar. *This app features a visual tuning meter that responds to your iPhone's microphone for precision tuning.*Easy to use:1. select the required note2. your iPhone sounds the note3. tune the string on your Guitar4. My Guitar Tuner's meter shows when you are flat, sharp or in tune5. repeat for all your Guitar's strings6. that's all there is to it :-)Alternative Guitar tunings are available from within the app.Alternative tunings currently available include:* Standard (default)* Drop Half Step* Drop D* Double Drop D* Open A* Open C* Open D* Open E* Open G* DADGAD