Underbook: Hotel Price Comparison & Tracker for Booking.com & Expedia
69 users No ratings yet Last updated 5 Nov 2026
By DPWonder Software
Live in the Chrome Web Store
bfkhcloifkimjimedcijpenafnkfibid
Search Google ↗
Last checked 6 Nov 2026, 05:33 UTC
The listing
What the Chrome Web Store shows, as of the last check
Compare hotel prices on Booking.com, Expedia & Hotels.com. See if room names match. Free price-drop alerts, even after you book.Summary from the listing
- Developer
- DPWonder Software
- Enhanced Safe Browsing
- Trusted. What this means →
- Category
- Lifestyle › Travel
- First published
- 3 Jun 2026
- Last updated
- 5 Nov 2026
- Version
0.5.67- Size
- 411 KiB
- Minimum Chrome
- 88
- Languages
19 languages
Deutsch, English, Indonesia, Nederlands, Tiếng Việt, Türkçe, español, français, italiano, polski, português (Brasil), português (Portugal), svenska, русский, עברית, 中文（中国）, 中文（台灣）, 日本語, 한국어
- Website
- https://underbook.co/
- Support page
- https://underbook.co
Show the numbers
| Checked | Users | Rating | Ratings |
|---|---|---|---|
| 2026-11-06 | 69 | – | – |
| 2026-11-03 | 64 | – | – |
| 2026-10-29 | 55 | – | – |
| 2026-10-27 | 54 | – | – |
| 2026-10-25 | 52 | – | – |
| 2026-10-24 | 54 | – | – |
| 2026-10-16 | 39 | – | – |
| 2026-10-14 | 36 | – | – |
| 2026-10-11 | 34 | – | – |
| 2026-10-08 | 25 | – | – |
| 2026-10-07 | 25 | – | – |
| 2026-10-06 | 25 | – | – |
| 2026-10-05 | 25 | – | – |
| 2026-10-03 | 19 | – | – |
| 2026-10-01 | 19 | – | – |
| 2026-09-30 | 19 | – | – |
| 2026-09-29 | 19 | – | – |
| 2026-09-28 | 19 | – | – |
| 2026-09-26 | 20 | – | – |
What changed
Every change found on a check, newest first
New version
0.5.67, replacing0.5.66.New version
0.5.66, replacing0.5.65.New version
0.5.65, replacing0.5.63.Renamed from “Underbook: Hotel Price Comparison for Booking.com & Expedia” to “Underbook: Hotel Price Comparison & Tracker for Booking.com & Expedia”.
The developer's website link changed.
New version
0.5.63, replacing0.5.61.New version
0.5.61, replacing0.5.60.Now listed in 19 languages, from 17.
New version
0.5.60, replacing0.5.55.New version
0.5.55, replacing0.5.53.Now listed in 17 languages, from 16.
New version
0.5.53, replacing0.5.49.Renamed from “Underbook: Hotel Price Comparison & Tracker” to “Underbook: Hotel Price Comparison for Booking.com & Expedia”.
Now listed in 16 languages, from 6.
New version
0.5.49, replacing0.5.48.New version
0.5.48, replacing0.5.43.Now listed in 6 languages, from 1.
New version
0.5.43, replacing0.5.42.New version
0.5.42, replacing0.5.40.The developer's contact email changed.
New version
0.5.40, replacing0.5.31.Moved from Shopping to Travel.
Added the sites
http://*/*,https://*/*.New version
0.5.31, replacing0.5.28.The summary on the listing changed.
New version
0.5.28, replacing0.5.26.New version
0.5.26, replacing0.5.24.The summary on the listing changed.
New version
0.5.24, replacing0.5.19.New version
0.5.19, replacing0.5.18.
Developer history
Moves to another publisher account and new contact emails, newest first
The contact email changed.
We know contact emails only by a keyed hash, so they're never shown. Recent account and contact changes →
What it can access
From the extension's manifest, in plain language
http://*/*Every websitehttps://*/*Every websitehttps://underbook-backend.underbook.workers.dev/*underbook-backend.underbook.workers.dev
http://*/*Every websitehttps://*/*Every website
activeTabThe tab you're on, only after you click the extensionscriptingRun scripts on sites it can reachstorageSave settings and data in your browser
More from this developer
Other extensions from the same publisher account
| Extension | Users | Rating | Ratings | Category |
|---|---|---|---|---|
| PromoIQ: Promo Codes, Coupon Finder & Price Comparison | – | – | – | Shopping |
About this data
Collected from the extension's public Chrome Web Store listing. It's checked every month, and again whenever a new version appears. Last checked 6 Nov 2026, 05:33 UTC; next check around 5 Dec 2026.
Cite this page
Citation
BibTeX
@misc{extensiontracker_bfkhcloifkimjimedcijpenafnkfibid,
title = {Underbook: Hotel Price Comparison & Tracker for Booking.com & Expedia (bfkhcloifkimjimedcijpenafnkfibid)},
author = {{Extension Tracker}},
year = {2026},
note = {Chrome Web Store data, last checked 2026-11-06},
url = {https://extensiontracker.com/extension/bfkhcloifkimjimedcijpenafnkfibid},
urldate = {2026-11-08}
}The data is free to reuse under CC BY 4.0.
Browse
Top lists
Productivity
- Tools 114,373
- Workflow & Planning 48,766
- Developer Tools 30,166
- Education 12,698
- Communication 7,703
Lifestyle
- Shopping 9,435
- Just for Fun 8,551
- Social Networking 7,510
- Games 7,204
- Entertainment 7,068
- Art & Design 3,632
- Well-being 3,116
- News & Weather 1,702
- Travel 962
- Household 549
Make Chrome Yours
- Functionality & UI 11,638
- Accessibility 8,340
- Privacy & Security 5,611