The big holiday season for those that make tablets and phones runs through Christmas as families upgrade their devices and put new ones under the tree.
For those that sell the apps that run on those devices, though, the big rush is after Christmas, as recipients boot up their new devices and also cash in on gift cards they may have gotten.
As a result, many app makers offer special discounts and promotions in order to try to lure as many eager device owners as possible.
Among the iPhone apps on sale for 99 cents are productivity tools like Procreate and Scanner Pro, along with games such as Sky Safari 2 and Goat Simulator.
Google, meanwhile, is also running a number of deals to get people interested in its media options for Android.
Offers include three months of the Google Play Music service for $1 and 75 percent off of one video rental.