lnventory Change estimates how many ads are being launched or paused, by day, over time.
The Green Bars illustrate the count of ads estimated to have been set live on a given day (left axis) while the yellow bars illustrate the estimated count of ads which were paused on a given day.
The Red line (right axis) illustrates the count of ads believed to be active/live on a given day.
The Inventory Changes data can help Apptopia users better understand the campaign scale and/or optimization strategy at a point in time for an advertiser. Match this data with the "first seen" and/or "last seen" data below Inventory Changes to get a a sense for what creatives advertisers are likely seeing success from vs. ads they are turning off.