This philately related app is based on the book The Postal History of Lundy by F. W. Gade published in 1958 and the two supplements published in 1965 and 1972.
The issues until 1972 include the descriptions as published in the book as additional information, the issues after 1972 do not have additional information.
It can also be used as a more regular stamp catalog for the administration of your Lundy stamp collection and includes a have list and a want list.
The app does not distinct between the condition of stamps like used, mint, hinged, etc. for administration purposes, nor does the app have a valuation of stamps but you can manually add a price.
Only the major stamp numbers are included with the exception of a few overprint varieties and essays. The coins from 1929 and 2011 are also included.