Comparison

Bubble Level vs Level Tool

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

Head to head
About

Bubble Level

This utility app functions as a precise spirit level for your iOS devices. It's ideal for tasks like aligning picture frames, measuring angles, and checking the levelness of various surfaces. The app offers calibration and accurate readings to a tenth of a degree.

Highlights
  • Measure surface level
  • Calibrate with one click
  • Accurate to 0.1 degree
  • Retina display support
  • Picture frame alignment
  • Angle and slope measurement
Features
Read full description

Bubble Level is an accurate and simple to use spirit level for your iPhone, iPad and iPod touch. It's great for aligning picture frames or for angle measurements. Features: ◉ Measure the level of any surface. ◉ It can be calibrated with the click of a button and the calibration is saved automatically. ◉ It's accurate to one tenth of a degree. ◉ Full Retina support. This tool can be used for: ◉ Picture frame alignment ◉ Measuring angles and slopes ◉ Checking the surface level of tables, shelves or any other object ◉ Measuring the inclination of a ship, aircraft or car ◉ Roof pitch calculation ▶ Calibration instructions: - To calibrate the level, hold the device upright against a reference surface ( landscape mode with the button to the left ) and press the red Calibrate button. Download this app today!

About

Level Tool

Transform your device into a versatile set of precision measuring tools. Accurately level any surface, measure roof pitch and angles, and align objects using your camera. Features include a digital protractor, plumb bob, and compass for various construction and DIY tasks.

Highlights
  • Millimeter-accurate bubble level
  • Measure roof pitch and angles
  • Camera-based alignment with overlay
  • Edge, plumb, and compass readings
  • Customizable zero and hold function
  • Measurement logging and export
Features
Read full description

Level Tool turns your iPhone into a full set of precision measuring instruments — no extra tools needed on site. LEVEL ANY SURFACE INSTANTLY Millimeter-accurate bubble level. Set a custom zero, hold your reading, and check any surface in seconds. MEASURE ROOF PITCH & ANGLES A full-screen protractor reads degrees, slope %, and pitch ratio (e.g. 4:12) — everything a roofer or carpenter needs. ALIGN ANYTHING WITH YOUR CAMERA Overlay a laser-straight line through your camera to align shelves, tile, frames, and furniture. Switch to Roof, Angle, or Points mode for multi-point measurements. THREE LEVELS AT ONCE, ZERO TOOLS Expert mode shows the edge vial, surface bubble, and angle readout together, all in one glance. EDGE, PLUMB & COMPASS Rest your phone on its edge for edge-level readings, check true vertical with Plumb, or use the built-in Compass. YOUR TOOL, YOUR NAME Personalize the app with your own name or company name. MEASUREMENT LOG Save readings with notes and export them to share with clients or crews. Built for contractors and tradespeople — simple enough for any DIY job too. Terms of Use: https://sites.google.com/view/leveltermofuse/home

Screenshots

Bubble Level2 screens
Level Tool4 screens

Verdict

The call

The clearest difference is update cadence: Level Tool at every 3 weeks against Bubble Level's every 10 months. Level Tool also leads on rating (5.0 vs 4.6). Bubble Level's advantage is ratings volume (3.1K vs 5). On price, ads, in-app purchases and monetization model 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 sells 1 one-off in-app purchase and Level Tool sells 3 in-app purchases, starting at $19.99 per year. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Level Tool holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Bubble Level has 3.1K ratings behind it against 5, so its average is the more settled of the two.

UpkeepUpdate frequency

Bubble Level ships an update every 10 months, Level Tool every 3 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
Bubble Level versus Level Tool: the parameters behind the verdict, then further details
ParameterBubble LevelLevel Tool
PriceFreeFree
Rating4.6 (3.1K ratings)5.0 (5 ratings) — better
Positive reviews29.4% of reviews—
Number of ratings3.1K — better5
Update frequencyEvery 10 monthsEvery 3 weeks — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size20 MB26 MB
Age rating12+4+
DeveloperNetviking ABLIMBIC APPS YAZILIM LIMITED SIRKETI

Customer experience

Bubble Level

All ratings3,062 ratings
Positive91.2%
Neutral3.6%
Negative5.2%
Written reviews201 reviews
Positive29.4%
Neutral1.5%
Negative69.2%

Level Tool

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Bubble Level

Reported bugs

3 issues
  • Ads crash the app
  • Inability to exit the app due to ads
  • Calibration button doesn't work as expected

Requested features

2 requests
  • Percent slope display option
  • Ability to rotate bubble to vertical position

Level Tool

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Bubble Level

One-time1
  • Pro Upgrade$4.99
3 purchases

Level Tool

Subscriptions1
  • Level Tool Pro7 Days trial$19.991 Year
One-time2
  • Lifetime Access$9.99
  • Level Tool Pro$24.99

Questions

Is Bubble Level free?
Bubble Level is free to download, with in-app purchases available.
Is Level Tool free?
Level Tool is free to download, with in-app purchases available.
Which has better reviews, Bubble Level or Level Tool?
Level Tool is rated higher. Bubble Level averages 4.6 out of 5 from 3.1K ratings, while Level Tool averages 5.0 from 5 ratings.
Do Bubble Level or Level Tool have ads?
Both Bubble Level and Level Tool show ads.
Which is updated more often, Bubble Level or Level Tool?
Bubble Level ships an update every 10 months, and Level Tool every 3 weeks. Most recently, Bubble Level was updated on October 26, 2026 and Level Tool on October 24, 2026.

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