Comparison

Firefox Focus vs Debugging Assistant

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

Head to head
About

Firefox Focus

This privacy-focused browser offers an always-on ad and tracker blocker for faster, distraction-free browsing. It automatically erases your browsing history, passwords, and cookies with a single tap, ensuring your online activity remains private.

Highlights
  • Always-on ad blocking
  • Tracker protection
  • One-tap history deletion
  • Minimalist design
  • Home screen shortcuts
  • Faster page loads
Features
Read full description

Use Firefox Focus for everything you want to keep separate from your main browser — for all those get in get out and forget about it moments. No tabs, no fuss, no muss. Block ads and online trackers too. One tap, and your browsing history is completely destroyed. Blocking distracting ads also means faster page loads which means Focus gets you where you want to go a lot faster. Firefox Focus is the perfect get in/get out, search and destroy, I’m on a mission that’s none-of-your-business — web browser. NEW DISTRACTION-FREE DESIGN When you open Focus, you just get the awesome bar and the keyboard for super quick searching. That’s it. No recent history, no past sites, no open tabs, no ads, no distractions. Just a simple, minimal design with menus that make sense. ONE TAP TO DELETE HISTORY Erase your history, passwords and cookies with just a tap of the trash button. CREATE SHORTCUTS Pin up to four shortcuts on your home screen. Get to your favorite site even quicker without typing anything. FASTER BROWSING WITH AD BLOCKING & TRACKING PROTECTION Firefox Focus blocks many ads you’d normally see on web pages so you get much faster page load speeds, which means you get to the stuff you want a lot faster. Focus also blocks a wide range of trackers by default, including social trackers and those sticky ones that come from things like Facebook ads. BACKED BY A NON-PROFIT Firefox Focus is backed by Mozilla, the non-profit that fights for your rights on the web, so you can trust it not to sell your data. LEARN MORE ABOUT FIREFOX WEB BROWSER: - Read about Firefox permissions: http://mzl.la/Permissions - Learn more about what’s up at Mozilla: https://blog.mozilla.org ABOUT MOZILLA Mozilla exists to build the Internet as a public resource accessible to all because we believe open and free is better than closed and controlled. We build products like Firefox to promote choice and transparency and give people more control over their lives online. Learn more at https://www.mozilla.org. Privacy Policy: http://www.mozilla.org/legal/privacy/firefox.html

About

Debugging Assistant

Features
Read full description

Sensor Debug Assistant is capable of connecting to vibration and temperature sensors via Bluetooth and collecting critical data from the sampling devices.

Screenshots

Firefox Focus4 screens
Debugging Assistant3 screens

Verdict

The call

Firefox Focus and Debugging Assistant are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Firefox Focus ships an update monthly, Debugging Assistant every 5 weeks. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

ScorecardNo meaningful differences
Firefox Focus versus Debugging Assistant: the parameters behind the verdict, then further details
ParameterFirefox FocusDebugging Assistant
PriceFreeFree
Rating4.7 (82K ratings) — better—
Positive reviews62.8% of reviews—
Number of ratings82K — better—
Update frequencyMonthly — betterEvery 5 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size99 MB58 MB
Age rating17+4+
DeveloperMozillaAnhui Ronds Science & Technology Incorporated Company

Bugs and requests

Firefox Focus

Reported bugs

3 issues
  • Back button not working properly
  • Compatibility issues with certain websites
  • Inconsistent behavior when opening links from other apps

Requested features

4 requests
  • Add support for multiple tabs
  • Implement bookmark and password management
  • Introduce a dark mode option
  • Allow setting Firefox Focus as the default browser

Debugging Assistant

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Firefox Focus

No in-app purchases

None

Debugging Assistant

No in-app purchases

Questions

Is Firefox Focus free?
Firefox Focus is free to download, with no in-app purchases.
Is Debugging Assistant free?
Debugging Assistant is free to download, with no in-app purchases.
Do Firefox Focus or Debugging Assistant have ads?
Neither Firefox Focus nor Debugging Assistant shows ads.
Which is updated more often, Firefox Focus or Debugging Assistant?
Firefox Focus ships an update monthly, and Debugging Assistant every 5 weeks. Most recently, Firefox Focus was updated on September 24, 2026 and Debugging Assistant on September 22, 2026.

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