Comparison

Clinometer + bubble level vs Bubble Level Plus+

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

Head to head
About

Clinometer + bubble level

This professional tool offers precise slope measurement using all sides of your device and its camera. It supports various modes, relative angle measurements, and advanced calibration for accurate results in diverse applications.

Highlights
  • Multiple measurement modes (Clinometer, Camera, Bubble Level)
  • Relative angle measurement
  • Advanced two-way calibration
  • Speech synthesis for readings
  • Five unit modes (degrees, percentage, rise/run)
  • Motion-sensitive lock feature
  • Peer mode for two-device measurements
Features
Currently charting
Read full description

This professional tool called Clinometer is the most precise (all you can get with some calculations) slope measurement tool for the iPhone, iPod Touch and iPad using all sides of the device plus the camera. It can be used for simple applications like aligning a frame as well as for more sophisticated fields of applications where an arbitrary slope needs to be measured exactly. Read the reviews (and write your own) for all the applications you find! Thank for all your positive feedback! Please use our support link if you have questions and suggestions, we don't read the iTunes reviews every day! With this tool, the slope can be measured by all edges of the device and through the camera. The current features include: ◆ 3 Modes (incl. auto switching): Clinometer mode (auto when holding upright), Camera mode (any direction, manual activation) and Bubble level (smoothly fading in when holding flat). ◆ Relative angles: Besides measuring absolute angles, for every mode you can measure the relative angle between device positions ◆ Advanced two way calibration on all sides: For every 4 sides plus the bubble mode you can calibrate in two steps, which allows you to calibrate exactly even on non-level surfaces. Each direction can be calibrated individually to achieve the optimal precision. ◆ Speech synthesis: The device will speak the current reading, so you don't have to watch the display while measuring/aligning your object. ◆ Five different unit modes: The device can display the slope in degrees (rounded or in tenth of degrees), percentage, rise over run (common for roof slope measurement in :12) and 1V:H (common in engineering) ◆ Dial Rotation: You can smoothly rotate the background dial and thus define which side of the device represents 0° and 90° degrees. ◆ Motion-sensitive Lock feature: Besides the common instant simple tap hold mechanism you can activate the motion-sensitive lock. If activated the device waits for the final lock until you hold your device steady enough for at least 2 seconds. You can set the lock sensitivity between 0.1° and 1.0° degrees. ◆ Peer Mode: Use two devices to measure angles: One as a display, the other as the measurement device that can be attached to the hardware you want to align. ◆ Fullscreen Mode: The full screen mode can be toggled by tapping the center of the screen and by the upper and lower arrows in the center. This prevents you from erroneous inputs while measuring. ◆ Different color schemes: Press the S/C Button to instantly switch the color. The color can be selected differently for the bubble and the clinometer mode. The predefined color sets include day and night color schemes (Black on White, White on Black and Red). ◆ Adjustable Auto-Lock: You can prevent the device from turning into the sleep mode. According to wikipedia: An inclinometer or clinometer is an instrument for measuring angles of slope (or tilt), elevation or inclination of an object with respect to gravity. It is also known as a tilt meter, tilt indicator, slope alert, slope gauge, gradient meter, gradiometer, level gauge, level meter, declinometer, and pitch & roll indicator. For recreational use only. After the calibration it CAN (!) be very accurate especially for the main axis after calibration. The measurement is performed as well as possible (we try our best) by using the three inbuilt accelerometers. THANK YOU FOR YOUR SUPPORT! We will improve the application long-term. This was the first application of this kind shortly after the opening of the App Store. Since then it is continuously updated and enriched with new features.

About

Bubble Level Plus+

This utility app functions as a digital bubble level, angle meter, and tilt meter. It helps users align picture frames, measure slopes, and assist with home decoration. Calibration instructions are provided for accurate measurements.

Highlights
  • Bubble level functionality
  • Angle measurement
  • Tilt meter
  • Picture frame alignment
  • Home decoration assistance
  • Calibration guide
Features
Read full description

Bubble Level (one of the 12 tools in iMetalBox) is now free! Take this chance to download! ======== User reviews ======== • "Works great and stylish!" - HellofromtheFeeworld746 • "Just what I need it for. Simple and easy." - LtHottRod • "No drama, does what I need it to." - Leon8004 • "I have use on my (welder) and it worked great." - Spark in the dark -------------------------------- Full retina display support for both iPhone 4 and iPhone 5! Also check out iMetalBox: 12 in 1, get 12 useful tools with the price of one! You can use Level° for: - Picture frame alignment - Measure angles and slopes - Home decoration - And much more! Calibrate instructions: - To calibrate the levels, hold the phone against a reference surface and press the Calibrate button. - Do this two times for vertical and horizontal orientations.

Screenshots

Clinometer + bubble level4 screens
Bubble Level Plus+4 screens

Verdict

The call

The clearest difference is review sentiment: Clinometer + bubble level at 91% against Bubble Level Plus+'s 38%. Clinometer + bubble level also leads on chart position (#137 vs unranked) and device support (4 vs 2). Bubble Level Plus+'s advantage is price (Free vs $1.99) and rating (4.6 vs 4.0). On update cadence, 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

Bubble Level Plus+ is free to download; Clinometer + bubble level costs $1.99 up front. Clinometer + bubble level sells 3 one-off in-app purchases and Bubble Level Plus+ sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Bubble Level Plus+ holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: Bubble Level Plus+ has 15K ratings behind it against 42, so its average is the more settled of the two. Written reviews complicate that: 91% of Clinometer + bubble level's written reviews are positive against 38% of Bubble Level Plus+'s, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Clinometer + bubble level ships an update every 4 months, Bubble Level Plus+ every 2 months. Both last shipped on September 24, 2026.

Scorecard7 real differences · 4 level
Clinometer + bubble level versus Bubble Level Plus+: the parameters behind the verdict, then further details
ParameterClinometer + bubble levelBubble Level Plus+
Price$1.99Free — better
Rating4.0 (42 ratings)4.6 (15K ratings) — better
Positive reviews90.6% of reviews — better37.6% of reviews
Number of ratings4215K — better
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#137 — better—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS11.0 — better17.6
Further details — not scored
Size14 MB8 MB
Age rating4+4+
DeveloperPeter BreitlingTue Nguyen Minh

Customer experience

Clinometer + bubble level

All ratings42 ratings
Positive73.8%
Neutral4.8%
Negative21.4%
Written reviews627 reviews
Positive90.6%
Neutral2.2%
Negative7.2%

Bubble Level Plus+

All ratings15,219 ratings
Positive89.1%
Neutral4.2%
Negative6.7%
Written reviews210 reviews
Positive37.6%
Neutral1.9%
Negative60.5%

User reviews

Clinometer + bubble level

From 42 App Store ratings

What we love

  • 👍 Accurate and reliable
  • 🚀 Easy to use and calibrate
  • 💡 Useful for various applications (construction, DIY, etc.)
  • 🔍 Helpful for aligning satellite dishes, solar panels, and more
  • 🔍 Great for leveling and measuring angles

Room to improve

  • 🐛 Calibration issues on some devices
  • 🐛 Occasional crashes or freezes
  • 🔍 Not accurate enough for some specialized uses (e.g., golf greens)
  • 🔍 Lack of clear instructions or tutorial

Bubble Level Plus+

From 15K App Store ratings

What we love

  • 🚀 Easy to use
  • ⚙️ Accurate measurements
  • 💡 Useful for various applications

Room to improve

  • 🔒 Overly aggressive monetization
  • 🕰️ Extremely limited free version
  • 🐛 Inconsistent performance
  • 💤 Frequent pop-ups disrupting usage

Bugs and requests

Clinometer + bubble level

Reported bugs

3 issues
  • Calibration not working correctly on some devices
  • App freezing or crashing on launch for some users
  • Readings not accurate when device is in a case

Requested features

5 requests
  • Dark mode or night-friendly interface
  • Ability to measure average slope over a distance
  • Option to display both degrees and percent slope
  • Integration with camera for sighting and measuring angles
  • Bluetooth connectivity to pair multiple devices

Bubble Level Plus+

Reported bugs

3 issues
  • Bubble level not working as expected
  • Measurements resetting unexpectedly
  • Compatibility issues with newer devices

Requested features

3 requests
  • Ability to lock calibration settings
  • More customization options
  • Improved accuracy for larger angles

In-app purchases

3 purchases

Clinometer + bubble level

One-time3
  • Support Updates Level Bronze$0.99
  • Support Developer Level Silver$2.99
  • Support Developer Level Gold$7.99
2 purchases

Bubble Level Plus+

One-time2
  • Pro Features$0.99
  • Bubble Level Pro$1.99

Questions

Is Clinometer + bubble level free?
Clinometer + bubble level costs $1.99, and also offers in-app purchases.
Is Bubble Level Plus+ free?
Bubble Level Plus+ is free to download, with in-app purchases available.
Which has better reviews, Clinometer + bubble level or Bubble Level Plus+?
Bubble Level Plus+ is rated higher. Clinometer + bubble level averages 4.0 out of 5 from 42 ratings, while Bubble Level Plus+ averages 4.6 from 15K ratings.
Do Clinometer + bubble level or Bubble Level Plus+ have ads?
Neither Clinometer + bubble level nor Bubble Level Plus+ shows ads.
Which is updated more often, Clinometer + bubble level or Bubble Level Plus+?
Clinometer + bubble level ships an update every 4 months, and Bubble Level Plus+ every 2 months. Most recently, Clinometer + bubble level was updated on September 24, 2026 and Bubble Level Plus+ on September 24, 2026.

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