This is Lewis and Short's unabridged "A Latin Dictionary (1879)"! After the Oxford Latin Dictionary it is the most important lexical resource for students of Classical Latin!
Version 3.0 is a major upgrade of 2.0, which itself was a complete rewrite of the user interface. 3.0 now offers the full, unabridged, Lewis and Short text, whereas the previous app only offered Lewis' abridged "An Elementary Latin Dictionary (1890)." For those of you just interested in "An Elementary Latin Dictionary" then it is now available as a separate, cheaper, app.
(1) Prefix search for all headwords
(2) Full text search by keyword for all of the dictionary entries
(3) Completely offline! After the first license check the app remembers your device.
Nota Bene: The original OCR effort by Tufts University did a very bad job with the Greek glosses in this dictionary. While it is better than in their OCR effort for Lewis' abridged edition, there are numerous mistakes with the Greek accents. This can only be corrected by hand and will take me some months. Fortunately, the English and Latin OCR came out perfectly.
This is a major upgrade, replacing Lewis' abridged dictionary with the unabridged Lewis & Short!