The request to rate Underbook now sits right under the card's answer, where you can see it, instead of at the foot of the card. It only appears while the page is in front of you and the card is open, at most once (or once more if you chose "Not now", no sooner than 90 days later), and never on a card that offers free cancellation for the same price or less. It can now also come when Underbook finds that the site you are on already has the best rate for the second stay you check. On Firefox its link opens Underbook's page on addons.mozilla.org.

When a hotel's own site or another booking site lists a lower price only for members who sign in, the card now shows the price anyone can book as the price, and says the members-only price in a short labelled note under it. A members-only price is never shown as the lower price or the best rate.

When a price check takes longer than usual, the card now says it is still checking and shows the answer when it arrives, instead of giving up after 25 seconds. If no answer comes, or the price service cannot be reached, the card says "Could not get prices right now." with a Try again button, and no longer gives a reason the price service did not give.

On hotels' own booking pages (SynXis, TravelClick, ThinkReservations, Simple Booking), Underbook now uses the hotel's town as the page shows it, so hotels with common names are told apart. When a page prices in a currency Underbook cannot check yet, the card now says plainly that its prices are in US dollars. The price and email fields keep their width on touch screens.

Underbook now works on more hotel pages: hotels' own booking pages (SiteMinder, SynXis, TravelClick, ThinkReservations, Simple Booking and Cloudbeds), full chain hotel names on Booking.com (so "hub London - Spitalfields" is checked as that hotel), uk.trip.com hotel pages, and Accor's results list and booking pages, priced in the page's own currency. The date field fits the card on touch screens.

Right after you book on Booking.com, Expedia, Hotels.com or Agoda, Underbook can offer, once, to watch that booking, with the hotel, dates, price and free-cancellation date filled in from the confirmation page for you to check. Nothing about the booking is sent unless you type your email and press the button. It then checks once a day until free cancellation ends, emails you once if a listed rate is at least 5% lower on two daily checks in a row, and reminds you a week before and the day before free cancellation ends. When another site lists free cancellation for the same price or less, the banner now says so. The "−" button shrinks the banner to one line, and changing dates on the page checks again at once.

The toolbar icon now shows "ON" on booking sites Underbook reads and a mark when a check is done. A small tip on a booking site's home or search page says Underbook works there (at most once a day, once every 14 days per site, with a "Don't show tips again" button). Better results for travelers outside the US: Expedia's German, French, Italian, Spanish and Dutch hotel pages are recognized, the hotel's town is read correctly, and prices are labeled with the country they were quoted for. The banner now says plainly that Underbook may earn a commission if you book through its links.

Better hotel detection: Agoda stays checking in on days 1 to 9 of a month now get a comparison; Booking.com keeps your dates after an old link redirects; Trip.com and IHG (including Kimpton) hotels are recognized; your page's currency and a 1-adult party are used; hotel names like "The Ritz-Carlton, Chicago" keep their town.

What's new since 0.5.25:
- Works on more booking sites and hotel websites: Hotwire, Orbitz, Travelocity, Wotif, ebookers, CheapTickets, Priceline, KAYAK hotel pages, Hilton, IHG, Hyatt, Choice, Wyndham, Accor, Radisson and Best Western.
- One line of room evidence on a lower price: both room names when they match, or a plain note when the cheaper site names no room. Check the room before you book.
- "I already booked this stay": enter what you paid and your free-cancellation date, and get one email if a listed rate is at least 5% lower on two daily checks in a row.
- Share this check: copy a link that reruns the same price check on underbook.co.
- The first hotel page you open is checked right away.
- Clearer banner: one main button per card, readable text, nothing cut off on small windows.