The number of smartphone podcast users in the United States has grown rapidly since 2014, according to data from Nielsen Podcast Insights. The number of users who watched, listened, or downloaded a podcast on a smartphone in the previous 30 days rose by 157.0% between 2014 and 2017. Other devices have seen more modest growth over this period. The 'other' category rose 70.0% while tablet and computer increased by 28.2% and 9.5%, respectively.
In 2014, the computer was the most popular device with 9.5 million users. However, the smartphone is the clear front-runner now, with 23.9 million users in 2017....