  In this work we study the neutron star phenomenology of $R^p$ attractor
theories in the Einstein frame. The Einstein frame $R^p$ attractor theories
have the attractor property that they originate from a large class of Jordan
frame scalar theories with arbitrary non-minimal coupling. These theories in
the Einstein frame provide a viable class of inflationary models, and in this
work we investigate their implications on static neutron stars. We numerically
solve the Tolman-Oppenheimer-Volkoff equations in the Einstein frame, for three
distinct equations of state, and we provide the mass-radius diagrams for
several cases of interest of the $R^p$ attractor theories. We confront the
results with several timely constraints on the radii of specific mass neutron
stars, and as we show, only a few cases corresponding to specific equations of
state pass the stringent tests on neutron stars phenomenology.
