Comparison

Firefox Fast & Private Browser vs Door Browser

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Firefox Fast & Private Browser

A fast and private web browser that protects you by default. It blocks trackers, offers private browsing, and provides tools to help you focus on content and manage your logins securely.

Highlights
  • Enhanced Tracking Protection
  • Private browsing mode
  • Page summaries
  • Built-in password manager
  • Reader Mode
  • Sync across devices
Features
Currently charting
Read full description

The internet. As it should be. Firefox is a fast, private web browser designed to protect you by default. Privacy is built in from the start, so you can focus on what matters instead of worrying about who’s watching. Why people choose Firefox: • Enhanced Tracking Protection – Blocks trackers by default to help stop companies from following you across the web. • Private browsing mode – Browse without saving your history, searches, or cookies. • Page summaries – Get the key points from long pages and move on faster. • Built-in password manager – Generate strong passwords, save them securely, and autofill logins when you need them. • Flexible search options – Choose your default search engine or switch search engines right from the search bar. • Reader Mode – Remove ads and clutter from articles so you can focus on what you’re reading. • Sync across devices – Pick up where you left off with synced tabs, bookmarks, and passwords when you sign in to your Mozilla account. Private by default Firefox is designed with privacy built in from the moment you start browsing. Enhanced Tracking Protection automatically blocks common background trackers, including social media trackers, crypto miners, and fingerprinters. When you want extra privacy, private browsing mode doesn’t save your history, searches, or cookies. Focus on what matters The web can be distracting. Firefox is designed to help you stay focused without making you manage everything yourself. Reader Mode clears clutter from articles, and picture-in-picture keeps videos visible while you multitask—without pulling focus from what you’re doing. Browse your way Customize Firefox to fit how you browse. Personalize your home screen with wallpapers and layout options, and choose your preferred search engine instead of being pushed into a single ecosystem. You can move the search bar to the top or bottom of the screen for easier one-handed browsing. Sign in to your Mozilla account to sync tabs, bookmarks, passwords, and browsing history across devices, so switching feels seamless. Built for people, not profit Firefox was created in 2004 by Mozilla as a faster, more private, and more customizable alternative to other browsers. Today, Mozilla remains a nonprofit and continues working to make the internet — and the time you spend on it — better. Learn more about Mozilla: https://www.mozilla.org Terms of Use: https://www.mozilla.org/about/legal/terms/firefox/ Privacy Policy: https://www.mozilla.org/privacy/firefox Latest news: https://blog.mozilla.org

About

Door Browser

This app offers a secure and private browsing experience by keeping all your data on your device. It features quick access to news, trending searches, and efficient bookmark and history management, all within a clean interface.

Highlights
  • Private browsing
  • Password-locked bookmarks and history
  • Bookmark management
  • Watch history
  • Most viewed pages
  • Clean interface
  • News headlines
Features
Read full description

Door browser - for a safe, clean, fast browse internet environment     【 Security 】 Never return your browse information and records, all information will only remain on your mobile phone.     【 News 】 Give you the latest and hottest headlines.     【 Hot Search 】 Instantly update the hottest search at the moment, letting you walk in the forefront of fashion.     【 Clean 】 The most simple and easy to use interface.     【 Bookmarks 】 Bookmark management is super easy and search bookmarks are fast and accurate     【 Watch History 】 Browse web page history sort by record time to see at a glance, search history is fast and accurate     【 Most Viewed 】 Sort the web pages you use most often.     【 Private 】 Use a password lock to lock your bookmarks and records to prevent others from seeing them. 【 Bookmarks Lock 】 Lock your bookmarks with a password to prevent others from seeing your favorite bookmarks 【 Watch History Lock 】 Lock your watch history with a password to protect your browsing privacy 【 Most Viewed Lock 】 Lock your most viewed webpage with a password to protect your browsing privacy    【 Private Browsing 】 Not record your browse history and website's cookies     We will continue to build a safer, more convenient, and more concise browse Internet.We strive to optimize the app's user experience and make app more stable        If you have any questions or problems with the use of door browser, please write to us! You are also welcome to give any advice!     Our Email:doorbrowser@gmail.com    Thank you! Best regard!

Screenshots

Firefox Fast & Private Browser4 screens
Door Browser4 screens

Verdict

The call

The clearest difference is review sentiment: Door Browser at 100% against Firefox Fast & Private Browser's 46%. Door Browser also leads on rating (4.9 vs 4.6) and iOS requirement (11.0 vs 15.0). Firefox Fast & Private Browser's advantage is in-app purchases (none vs 7) and ads (none vs shown). On price and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Door Browser sells 7 one-off in-app purchases. Firefox Fast & Private Browser asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Door Browser holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: Firefox Fast & Private Browser has 219K ratings behind it against 35, so its average is the more settled of the two. Written reviews point the same way: 46% of Firefox Fast & Private Browser's written reviews are positive against 100% of Door Browser's.

UpkeepUpdate frequency

Firefox Fast & Private Browser ships an update weekly, Door Browser every 2 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard9 real differences · 2 level
Firefox Fast & Private Browser versus Door Browser: the parameters behind the verdict, then further details
ParameterFirefox Fast & Private BrowserDoor Browser
PriceFreeFree
Rating4.6 (219K ratings)4.9 (35 ratings) — better
Positive reviews45.7% of reviews100.0% of reviews — better
Number of ratings219K — better35
Update frequencyWeekly — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank#13 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.011.0 — better
Further details — not scored
Size369 MB78 MB
Age rating17+17+
DeveloperMozillaKai Di Huang

Customer experience

Firefox Fast & Private Browser

All ratings218,800 ratings
Positive91.7%
Neutral3.1%
Negative5.2%
Written reviews3,095 reviews
Positive45.7%
Neutral11.0%
Negative43.3%

Door Browser

All ratings35 ratings
Positive97.1%
Neutral0.0%
Negative2.9%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Firefox Fast & Private Browser

Reported bugs

4 issues
  • Images not loading properly
  • Incompatibility with certain websites and web apps
  • Keyboard issues and unexpected behavior when switching between apps
  • Sync issues and data loss when switching devices

Requested features

4 requests
  • Dark mode option
  • Improved bookmark management and organization
  • Built-in ad blocker or support for third-party ad blockers
  • Ability to rearrange tabs and customize the UI

Door Browser

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Firefox Fast & Private Browser

No in-app purchases

7 purchases

Door Browser

One-time7
  • A ice cream$0.99
  • 阻擋廣告$0.99
  • A cup of coffee$2.99
Show 4 more
  • A hamburger$3.99
  • A pizza$4.99
  • A roast chicken$6.99
  • A steak$9.99

Questions

Is Firefox Fast & Private Browser free?
Firefox Fast & Private Browser is free to download, with no in-app purchases.
Is Door Browser free?
Door Browser is free to download, with in-app purchases available.
Which has better reviews, Firefox Fast & Private Browser or Door Browser?
Door Browser is rated higher. Firefox Fast & Private Browser averages 4.6 out of 5 from 219K ratings, while Door Browser averages 4.9 from 35 ratings.
Do Firefox Fast & Private Browser or Door Browser have ads?
Door Browser shows ads; Firefox Fast & Private Browser does not.
Which is updated more often, Firefox Fast & Private Browser or Door Browser?
Firefox Fast & Private Browser ships an update weekly, and Door Browser every 2 months. Most recently, Firefox Fast & Private Browser was updated on October 29, 2026 and Door Browser on October 24, 2026.

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