Comparison

Firefox Fast & Private Browser vs US 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

US Browser

A secure and fast mobile web browser designed for privacy. It offers ad and virus blocking, an intelligent search, and a minimalist interface for a comfortable browsing experience.

Highlights
  • Ad and virus blocking
  • Intelligent search
  • Incognito protection
  • Minimalist interface
  • Dark mode
  • Quick website organization
Features
Read full description

US Browser focuses on designing a secure web browser. Built for mobile, it offers lightning-fast search capabilities, giving you the best iOS browsing experience and making your browsing more comfortable. It is your most personal and safest browser, blocks ads and viruses, and conveniently browse any web page you want to visit. The main function: [New Design] Minimalist interface, focused and efficient browsing [Intelligent Search] Massive and accurate association words, you can get it with one search [Incognito Protection] All-round protection of your access privacy【Ad Blocking】Ad and virus blocking, worry-free online 【Quick website】Ordinary website organization, providing the most convenient browsing service 【Dark Mode】Protect your eyes at night and reduce discomfort when browsing the web Payment will be charged to your iTunes Account at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off 24-hours before the end of the current period. Accounts will be charged for renewal within 24 hours of the end of the current period, and renewal fees will be provided. Subscriptions can be managed by the user. Auto-renewal may be turned off by going to the user's Account Settings after purchase. During the active subscription period, cancellation of the current subscription is not allowed. About more information: Privacy Policy: https://crystalline-primula-a5f.notion.site/Privacy-Policy-103e27451c304f119f228658f8a928a8 EULA: https://crystalline-primula-a5f.notion.site/EULA-e97efa185f5b41419aeae252e49be9d5 If you have more ideas or comments, please contact us: wanneng0201@163.com

Screenshots

Firefox Fast & Private Browser4 screens
US Browser3 screens

Verdict

The call

The clearest difference is in-app purchases: Firefox Fast & Private Browser at none against US Browser's 4. Firefox Fast & Private Browser also leads on ads (none vs shown) and rating (4.6 vs 4.2). US Browser's advantage is update cadence (every 2 days vs weekly) and iOS requirement (11.0 vs 15.0). 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. US Browser sells 4 in-app purchases, starting at $0.99 per 7 days. Firefox Fast & Private Browser asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Firefox Fast & Private Browser holds the better App Store score, 4.6 against 4.2. That said, the two scores are not equally well evidenced: Firefox Fast & Private Browser has 218K ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 45% of Firefox Fast & Private Browser's written reviews are positive against 36% of US Browser's.

UpkeepUpdate frequency

Firefox Fast & Private Browser ships an update weekly, US Browser every 2 days. Both last shipped on September 28, 2026.

Scorecard9 real differences · 2 level
Firefox Fast & Private Browser versus US Browser: the parameters behind the verdict, then further details
ParameterFirefox Fast & Private BrowserUS Browser
PriceFreeFree
Rating4.6 (218K ratings) — better4.2 (9 ratings)
Positive reviews45.4% of reviews — better36.4% of reviews
Number of ratings218K — better9
Update frequencyWeeklyEvery 2 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank#27 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.011.0 — better
Further details — not scored
Size363 MB79 MB
Age rating17+17+
DeveloperMozillaSi Yong Limited

Customer experience

Firefox Fast & Private Browser

All ratings217,689 ratings
Positive91.8%
Neutral3.1%
Negative5.2%
Written reviews2,960 reviews
Positive45.4%
Neutral11.1%
Negative43.4%

US Browser

All ratings9 ratings
Positive77.8%
Neutral0.0%
Negative22.2%
Written reviews22 reviews
Positive36.4%
Neutral4.5%
Negative59.1%

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

US Browser

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Firefox Fast & Private Browser

No in-app purchases

4 purchases

US Browser

Subscriptions4
  • Week Vip7 Days trial$0.997 Days
  • Month Vip3 Days trial$2.491 Month
  • Quarter Vip$6.993 Months
Show 1 more
  • Year Vip7 Days trial$17.991 Year

Questions

Is Firefox Fast & Private Browser free?
Firefox Fast & Private Browser is free to download, with no in-app purchases.
Is US Browser free?
US Browser is free to download, with in-app purchases available.
Which has better reviews, Firefox Fast & Private Browser or US Browser?
Firefox Fast & Private Browser is rated higher. Firefox Fast & Private Browser averages 4.6 out of 5 from 218K ratings, while US Browser averages 4.2 from 9 ratings.
Do Firefox Fast & Private Browser or US Browser have ads?
US Browser shows ads; Firefox Fast & Private Browser does not.
Which is updated more often, Firefox Fast & Private Browser or US Browser?
Firefox Fast & Private Browser ships an update weekly, and US Browser every 2 days. Most recently, Firefox Fast & Private Browser was updated on September 28, 2026 and US Browser on September 28, 2026.

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