I am using several sync services (box, dropbox, one drive) and sharing folders with colleagues. This causes problems when traveling. Ofter when I am traveling I access internet through my iPhone mobile contract. If then a college ad a large file or folder in "our" folder I use all bandwidth and eventually the quota to for something that is not important at the moment. I am looking for a small app that temporally disable all sync services. Preferably it should be operational through trough a menubar icon. Do you hava a suggestion?