Find the best price

Before you buy a book, it's worth knowing what it's worth on the market. Just scan the cover, or look it up with the app's search. Libinvenio checks the same title across several Portuguese sellers and shows you the lowest and the average price, telling new from second-hand, and showing the edition and the copy's condition when the shop lists them. One tap opens the seller's site. The sale happens on their site; we just take you there.

What it does

Compare prices, new and second-hand

The lowest and average price across Portuguese bookshops, antiquarian sellers and marketplaces. See each copy's edition and condition, because a second-hand book is more than its price.

Scan by cover or ISBN

Photograph the cover or scan the ISBN, and Libinvenio recognises the book. Point the camera at a whole shelf and catalog several at once.

Every edition's details

Pick the right edition and keep publisher, year, translator, series, original language, and more.

Library stats

How many books and authors you own, how much you've read this year, by decade, by language and by shelf, the value of your collection, and more.

Private by design

Your library stays on your phone. No accounts, no tracking, no ads. Export everything to a file whenever you like — the data is yours.

Organized your way

Shelves mirror how you personally organise your library: reading status, collection, genre, language, author, country, and more. Your criteria rule. And there's a wishlist for the ones you've yet to read.

Built for real books

Many apps only recognise books by their barcode. But older books, out-of-print titles and many foreign editions have no ISBN at all, forcing the reader into the chore of cataloguing their library by hand.

  • Recognises the book from its cover. And fills in publisher, year, translator, edition, and more. Enrich the details with a photo of the colophon and the back cover.
  • Focuses on Portuguese catalogue. It searches PORBASE and the National Library, rich in Portuguese titles.
  • Works offline. Your data stays on your phone and you can export it any time. It won't vanish if a service shuts down.
  • Shows you where it's cheaper. Before you buy the next one, compare the price, new and second-hand, across Portuguese bookshops.

See for yourself

  • Library screen with shelves Your libraryShelves by room or category
  • Shelf detail screen Inside the shelfSort to your taste
  • Book detail screen Every detailPublisher, translator, edition
  • Scan screen ScanCover or ISBN
  • Cover and edition confirm screen Recognises the coverAnd picks the edition
  • Price comparison screen Compare pricesNew and second-hand, side by side
  • Library stats screen Library statsAuthors, decades, price
  • Whole-shelf scan screen A whole shelfSeveral books at once
  • Wishlist screen WishlistWhat's still missing