Watch your favourite Channel 4, E4 and More4 shows live or on demand, including 100s of free box sets and a whole bunch of original online shows. All 4 is a free app - our content is free to watch because Channel 4 is a not-for-profit organisation and all of our programming is funded with money made from advertising. Note: All 4 works on 2014 Amazon Fire HD 6", Fire HD 7" and Fire HDX 8.9 on Fire OS 4.5.3 or newer. For 2013 Kindle Fire HDX 7" and Fire 8.9", please ensure that you have Fire OS 4.5.3 installed to enable downloads and for a better playback experience. All 4 now also works on Amazon Fire TV boxes and Amazon Fire TV sticks.