DO NOT DOWNLOAD.every song and tool is available for free in the desktop version (i run adblock) but the site on mobile's got too many ads, tries to force you to download the app,and doesn't let you use basic tools like transposing.UNLESS YOU DOWNLOAD THE APP.so you download the app.first time you open it runs a non-skippable "customization" process which SUCKS.had to bruteforce out of it.it tries to force you to buy premium everytime you move through the app AND transposing's only 4 premium. FU