This library/bookstore app comes with one free book of short stories and other books which can be downloaded for free.
The free book, Sci Fi Short Stories, is a collection of eight science fiction stories:
When the generational ship is bleeding air, the colonists escape to a habitable but strangely deserted planet. A power failure turns things towards darkness that only deepens when they begin to discover the truth. Cherish knows she’s racing the clock as she tries to help develop a cure before it’s too late to save their children.
Additional books are available as a free download.