The book Rome in Ruins - Along the Aurelian Wall contains a detailed discussion of three walks in Rome. The history and archaeological significance has been extensively researched. The text contains over 300 footnotes.
The Daywalker app provide interactive maps for the three walks and the more than 45 points of interest. It also provides 3D flyovers of the three walks and the points of interest.
Used together the reader can go between the text and interactive maps and flyovers by touching the book pages.
See the videos below for examples of a 3D flyover of the Flaminio Obelisk and the path from Horti Salustiani to Porta Salaria.