Good as far as it goes but incomplete!
This is an interesting app that draws on, without simply replicating, Chantraine and Frisk among others. There are places where the text says “I think” vel sim (e.g. s.v. κρύος). It would be interesting to know the identity of the person behind these first-person comments. Whom are we reading? Also, and this is a more serious and fundamental flaw, the app runs out in the letter σ (with the exception of the proper noun Τροίη). One needs really to know *before* buying the app that it is materially incomplete. One might still buy it. But we ought to be told. And it would be very good if a complete version were to be issued.