Comparison

Bubble level and Clinometer vs Angulus Pro

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

Head to head
About

Bubble level and Clinometer

This app provides precise slope and angle measurements using your device's sensors. It offers multiple units, adjustable lock sensitivity, and a peer mode for measuring angles between two devices. Customize the display with different color schemes and prevent sleep mode with adjustable auto-lock.

Highlights
  • Multiple unit modes (degrees, percentage, rise/run)
  • Adjustable dial rotation
  • Motion-sensitive lock feature
  • Volume button lock
  • Peer mode for two-device measurements
  • Fullscreen mode
  • Customizable color schemes
Features
Read full description

In this the limited but therefore free version of Clinometer. It as all features but can not be calibrated. 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. 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 in every direction. When the device is put flat on the table a bubble view will fade in. The current features include: ◆ 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. ◆ Volume Button Lock: Use volume buttons to trigger the lock. ◆ 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. Only the full version has a two way calibration feature! Please support us and buy the full version if you can. 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. ► Check out all our products (free and paid) on www.plaincode.com

About

Angulus Pro

This app provides professional-grade angle measurements for clinical and personal use. It offers high precision, multiple measurement modes, and AI-powered camera assistance for accurate assessments and progress tracking.

Highlights
  • Precision to 0.01°
  • Four Measurement Modes
  • AI-Powered Camera Overlay
  • Real-Time Analysis
  • Clinical Documentation & Export
  • Progress Tracking
Features
Read full description

Angulus Pro: Clinically Validated Angle Measurement Trusted by researchers worldwide with 40+ peer-reviewed publications. Angulus Pro delivers professional-grade angle measurements validated in leading medical journals: • Journal of Medical Internet Research • Journal of Clinical Orthopaedics and Trauma • Journal of Neuromuscular Diseases → Learn more: https://www.yonaga.app/angulus/research Research Validated • 40 published studies using Angulus (2021-2026) • 3,000+ patients assessed by researchers • Validated against gold-standard goniometry • Applied in orthopedics, rehabilitation, neurology, and sports medicine Key Features • Precision to 0.01°: Professional accuracy for clinical assessments • Four Measurement Modes: V, W, X, and N modes for ROM, fractures, and specialized angles • AI-Powered Camera: Overlay technology for precise alignment • Real-Time Analysis: Instant measurements from camera or photo library • Clinical Documentation: Add annotations and export reports • Progress Tracking: Monitor improvement over time Professional Applications • Joint range of motion (ROM) • Hallux valgus and deformity angles • Fracture assessment • Postural analysis • Telehealth assessments For Patients and Non-Clinical Users • Track rehabilitation progress • Share measurements with providers • Sports performance analysis Privacy Policy: https://www.yonaga.app/angulus/privacy Terms of Use (EULA): Yonaga - https://yonaga.app/angulus/terms Apple - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Bubble level and Clinometer4 screens
Angulus Pro4 screens

Verdict

The call

The clearest difference is price: Angulus Pro at Free against Bubble level and Clinometer's $0.99. Angulus Pro also leads on rating (4.6 vs 4.1) and update cadence (fortnightly vs every 7 months). Bubble level and Clinometer's advantage is in-app purchases (none vs 3) and iOS requirement (11.0 vs 17.6). On ratings volume, ads 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

Angulus Pro is free to download; Bubble level and Clinometer costs $0.99 up front. Angulus Pro sells 3 in-app purchases, starting at $2.99 per month. Bubble level and Clinometer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Angulus Pro holds the better App Store score, 4.6 against 4.1. Both are backed by a comparable volume of ratings — 9 and 26 respectively.

UpkeepUpdate frequency

Bubble level and Clinometer ships an update every 7 months, Angulus Pro fortnightly. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.

Scorecard6 real differences · 4 level
Bubble level and Clinometer versus Angulus Pro: the parameters behind the verdict, then further details
ParameterBubble level and ClinometerAngulus Pro
Price$0.99Free — better
Rating4.1 (9 ratings)4.6 (26 ratings) — better
Positive reviews94.3% of reviews—
Number of ratings926 — better
Update frequencyEvery 7 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better17.6
Further details — not scored
Size13 MB134 MB
Age rating4+4+
DeveloperPeter BreitlingYonaga

Customer experience

Bubble level and Clinometer

All ratings9 ratings
Positive66.7%
Neutral33.3%
Negative0.0%
Written reviews175 reviews
Positive94.3%
Neutral0.6%
Negative5.1%

Angulus Pro

All ratings26 ratings
Positive88.5%
Neutral3.8%
Negative7.7%

In-app purchases

None

Bubble level and Clinometer

No in-app purchases

3 purchases

Angulus Pro

Subscriptions2
  • Angulus Pro Monthly7 Days trial$2.991 Month
  • Angulus Pro Annually$29.991 Year
One-time1
  • Angulus Pro Lifetime$49.99

Questions

Is Bubble level and Clinometer free?
Bubble level and Clinometer costs $0.99, with no in-app purchases.
Is Angulus Pro free?
Angulus Pro is free to download, with in-app purchases available.
Which has better reviews, Bubble level and Clinometer or Angulus Pro?
Angulus Pro is rated higher. Bubble level and Clinometer averages 4.1 out of 5 from 9 ratings, while Angulus Pro averages 4.6 from 26 ratings.
Do Bubble level and Clinometer or Angulus Pro have ads?
Neither Bubble level and Clinometer nor Angulus Pro shows ads.
Which is updated more often, Bubble level and Clinometer or Angulus Pro?
Bubble level and Clinometer ships an update every 7 months, and Angulus Pro fortnightly. Most recently, Bubble level and Clinometer was updated on October 13, 2026 and Angulus Pro on October 9, 2026.

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