iMIDIPatchbay is a powerful tool that allows you to effortlessly organize your entire MIDI setup from one central point. Whether you need to divide your keyboards into zones, send Program Changes to your MIDI equipment, or integrate your music making apps into your live gear, iMIDIPatchbay has got you covered.

With iMIDIPatchbay, you can easily create split and layer configurations, supporting up to 4 master keyboards with an In-App Purchase. You can send volume and control changes, such as reverb, chorus, and pan, to your sound devices. Transposing sounds in octave and half-tone steps is a breeze, and you can even filter controller data like sustain, pitch-bend, modulation, expression, and aftertouch.

The app allows you to store configurations as songs for later recall, making it easy to switch between setups seamlessly. You can even switch songs from another app or MIDI device via Program Changes. Plus, iMIDIPatchbay offers advanced features like "master switches" that allow you to make another master keyboard act as a substitute.

In addition, iMIDIPatchbay offers the ability to create setlists and link multiple PDF documents from Dropbox to each song with In-App Purchases. The app also provides a user-friendly interface optimized for live usage.

To get started with iMIDIPatchbay, you'll need a CoreMIDI interface to connect your keyboards and sound expanders to your iPhone.

For more information and a detailed description of the app, visit iMIDIPatchbay's website. If you encounter any issues, reach out to the developer via email provided on the website or within the app. Please note that posting a review on the App Store is not the best way to get support, so always email the developer first.

If you find iMIDIPatchbay useful, consider leaving a positive review on the App Store and share your experience with others. The developer also welcomes suggestions for future releases.