Is Flow available in my country? Plume Team April 11, 2018 09:05 Updated Follow Pre-orders are available in select countries, starting in France, Europe and the US, but we aim to make Flow available worldwide. Please sign-up here to stay up-to date with Flow news! Related articles When will Flow pre-orders be shipping? What pollutants does Flow measure? Refunds Do you have special package rates for citizen science projects? Do I need a smartphone and the companion app to use Flow? Comments 0 comments Article is closed for comments.