Comparison

Filtrete Smart vs Bubble Level

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

Head to head
About

Filtrete Smart

Manage your home's air quality with smart filter and purifier control. Receive personalized tips, alerts for filter replacement based on usage, and monitor outdoor air quality trends.

Highlights
  • Pair multiple smart air filters
  • Real-time filter life tracking
  • Smart air purifier control
  • Remote device management
  • Non-smart filter reminders
  • Outdoor air quality monitoring
Read full description

Filtrete™ Smart pairs with your Filtrete™ Smart Air Filter and Filtrete™ Smart Air Purifier to help you understand and manage your home’s air quality. It provides useful tips and alerts customized to your home’s environment, and will notify you when it’s time to replace your filters based on air flow and usage – not just time. With this app, you can • Pair multiple Smart Air Filters to track their life, and receive filter change notifications based on real usage • Pair Smart Air Purifiers to manage your indoor air quality – monitor and clean your air while remotely controlling your device by turning power on/off, setting different fan speeds, etc. • Scan the barcode of your non-smart Air Filters, and set timers to receive filter replacement reminders • Remember your filter type and size, and easily order replacement filters • Monitor outdoor air quality in multiple places, and view short and long-term trends • Receive tips and alerts to improve air quality

About

Bubble Level

Transform your phone into a precise measuring tool for DIY and home improvement. Quickly check horizontal and vertical alignment with a clean interface and accurate sensor detection, eliminating the need for extra tools.

Highlights
  • Precise bubble level
  • Horizontal and vertical alignment
  • Easy-to-read interface
  • Accurate sensor detection
  • No extra tools needed
Features
Read full description

Turn your smartphone into a precise bubble level. Perfect for DIY projects, home improvement, and construction work. With a clean, easy-to-read interface and accurate sensor detection, you can quickly check horizontal and vertical alignment anytime, anywhere — no extra tools needed.

Screenshots

Filtrete Smart4 screens
Bubble Level1 screens

Verdict

The call

The clearest difference is rating: Filtrete Smart at 4.8 against Bubble Level's 4.0. Filtrete Smart also leads on ratings volume (52K vs 3) and iOS requirement (15.0 vs 17.0). Bubble Level's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Filtrete Smart holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Filtrete Smart has 52K ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Filtrete Smart ships an update every 2 months, Bubble Level every 2 weeks. The most recent releases landed on September 29, 2026 and September 16, 2026 respectively.

Scorecard6 real differences · 4 level
Filtrete Smart versus Bubble Level: the parameters behind the verdict, then further details
ParameterFiltrete SmartBubble Level
PriceFreeFree
Rating4.8 (52K ratings) — better4.0 (3 ratings)
Positive reviews38.8% of reviews—
Number of ratings52K — better3
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size100 MB15 MB
Age rating4+4+
Developer3M Companytaishin miyamoto

Customer experience

Filtrete Smart

All ratings48,981 ratings
Positive95.9%
Neutral2.2%
Negative1.9%
Written reviews232 reviews
Positive38.8%
Neutral8.2%
Negative53.0%

Bubble Level

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%

Bugs and requests

Filtrete Smart

Reported bugs

4 issues
  • Barcode scanning feature not working
  • App crashes when trying to add new filters
  • Bluetooth connection frequently lost
  • Incorrect filter life displayed in app

Requested features

5 requests
  • Allow manual filter life input
  • Provide more detailed air quality data
  • Integrate with other smart home systems
  • Add option to disable location tracking
  • Improve app stability and reliability

Bubble Level

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Filtrete Smart

No in-app purchases

None

Bubble Level

No in-app purchases

Questions

Is Filtrete Smart free?
Filtrete Smart is free to download, with no in-app purchases.
Is Bubble Level free?
Bubble Level is free to download, with no in-app purchases.
Which has better reviews, Filtrete Smart or Bubble Level?
Filtrete Smart is rated higher. Filtrete Smart averages 4.8 out of 5 from 52K ratings, while Bubble Level averages 4.0 from 3 ratings.
Do Filtrete Smart or Bubble Level have ads?
Filtrete Smart shows ads; Bubble Level does not.
Which is updated more often, Filtrete Smart or Bubble Level?
Filtrete Smart ships an update every 2 months, and Bubble Level every 2 weeks. Most recently, Filtrete Smart was updated on September 29, 2026 and Bubble Level on September 16, 2026.

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