Comparison

AirMeter vs Bubble Level Tool

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

Head to head

AirMeter

AR Air Pollution Visualiser

Spirit level with calibration

Free

🔧 Utilities

★ 5.01 ratingsView app →

About

AirMeter

Features

Read full description

AirMeter visualises PM2.5 and Nitrogen dioxide pollution particles in Hackney, London, using Augmented Reality. Live data is provided by Breathe London / Imperial College London.

About

Bubble Level Tool

Measure horizontal and vertical levels with your smartphone. This tool uses intuitive animations to show when a surface is perfectly level, featuring a calibration function for precise results. Ideal for DIY, construction, and furniture installation.

Highlights

Measure horizontal and vertical levels
Intuitive animation indicators
Calibration function for precision
Suitable for DIY projects
Useful for construction
Furniture installation aid

Features

Read full description

This app allows you to easily measure horizontal and vertical levels using your smartphone. Simply place your phone on the surface to measure. Intuitive animations clearly indicate when it is level. Equipped with a calibration function for high-precision measurement. Useful for DIY projects, construction, furniture installation, and more.

Screenshots

AirMeter3 screens

Bubble Level Tool3 screens

Verdict

The call

The clearest difference is in-app purchases: AirMeter at none against Bubble Level Tool's 2. AirMeter also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 9 months). On price, device support and iOS requirement 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. Bubble Level Tool sells 2 in-app purchases, starting at $4.99 per month. AirMeter asks for nothing beyond the download.

UpkeepUpdate frequency

AirMeter ships an update every 2 weeks, Bubble Level Tool every 9 months. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 6 level

AirMeter versus Bubble Level Tool: the parameters behind the verdict, then further details
Parameter	AirMeter	Bubble Level Tool
Price	Free	Free
Rating	—	5.0 (1 ratings) — better
Number of ratings	—	1 — better
Update frequency	Every 2 weeks — better	Every 9 months
Ads	No — better	Yes
In-app purchases	No — better	Yes
Monetization	—	Free with in-app purchases
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	14.0 — better	15.0
Further details — not scored
Size	113 MB	74 MB
Age rating	4+	4+
Developer	ANRK Inc	kota tada

In-app purchases

None

AirMeter

No in-app purchases

2 purchases

Bubble Level Tool

Subscriptions2

Ad-free for 1 month7 Days trial$4.991 Month
Ad-free for 1 year14 Days trial$49.991 Year

Questions

Is AirMeter free?

AirMeter is free to download, with no in-app purchases.

Is Bubble Level Tool free?

Bubble Level Tool is free to download, with in-app purchases available.

Do AirMeter or Bubble Level Tool have ads?

Bubble Level Tool shows ads; AirMeter does not.

Which is updated more often, AirMeter or Bubble Level Tool?

AirMeter ships an update every 2 weeks, and Bubble Level Tool every 9 months. Most recently, AirMeter was updated on November 4, 2026 and Bubble Level Tool on October 30, 2026.