All tuning files and other files used by TuneLab are stored locally on your iPhone, iPad, or iPod Touch device. But if you have Internet access on your device, either by wi-fi or by the cell network data plan, you can use cloud file storage for uploads and downloads of these files. The cloud file storage system used by TuneLab is Dropbox. To use this feature, you must sign up for a Dropbox account at www.dropbox.com. Just the basic free service is needed. Then you can use the Files menu on the main tuning screen to access Dropbox Operations where you can upload your files to your Dropbox, or download files from your Dropbox.

On your desktop computer, you can install the Dropbox app and see all your tuning files appear automatically in the folder Apps / TuneLab Tuning Files. The upload/download functions transfer tuning files, temperament files, and exam report files.