Bubble Level vs Slope Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bubble Level
This app transforms your phone into a precise leveling tool. It offers accurate angle measurement, inclination detection, and augmented reality features for DIY and professional use. Calibration is simple and quick.
- Ultra-precise angle measurement
- Inclination and slope meter
- Augmented reality ruler and protractor
- Effortless one-touch calibration
- Clear and easy-to-read display
- User-friendly interface
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Transform Your Phone into a Precision Leveling Tool! Over 450K users - 4.5 Star Average Rating Introducing the Super-Easy Level: Turn your device into a highly accurate bubble level (spirit level) with ease. Ideal for both DIY aficionados and professional builders, our app delivers unparalleled precision for any leveling task. Why Choose Super-Easy Level? Versatile Measurement Tools: Not only can you check the level and inclination of surfaces, but with our camera integration, measuring lengths becomes a breeze. Augmented Reality Features: Equipped with an augmented reality ruler and protractor for cutting-edge measurement accuracy. Simplicity at Its Best: Enjoy a user-friendly interface that makes navigation a piece of cake on any smartphone or tablet. Now on Apple Watch: Angle measurements appear live on your wrist. The Watch app mirrors your iPhone's mode and accent color in real time. In 1D mode, a full-screen artificial horizon tilts with your measured angle — choose degrees, slope %, or near-delta. In 2D mode, a dual-axis crosshair with a yaw compass ring tracks tilt on both axes simultaneously. Lock readings or save angles directly from your Watch; the last reading stays on screen even if the iPhone connection drops. Key Features: Ultra-Precise: Measures angles to the nearest tenth of a degree. Effortless Calibration: Simple one-touch calibration keeps accuracy at your fingertips. Clear Visual Display: Our interface is designed for clarity, ensuring your measurements are easy to read at a glance. Robust Toolset: Whether it's a quick DIY project or a professional job, our app is up to the task. Get Started in Seconds: Align your phone with a known level or vertical edge. Press the calibration button. Done! Elevate your DIY and professional projects with Super-Easy Level — download now and level up your precision game! Features: ◉ Accurate measuring to one tenth of a degree. ◉ Super easy angle calibration and handling. ◉ Precise and reliable measurements ◉ Ability to measure inclination/slope ◉ Easy to read display ◉ Calibration function for even more accurate results ◉ User-friendly interface and can be used on any smartphone or tablet. ◉ Apple Watch support — live angle readings, lock & save from your wrist. How to calibrate: ◉ Align the phone with a level or vertical edge and hit the calibration button. ◉ That's it. Terms of use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Slope Calc
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Why do we use slope calculator? Calculating the slope of a line is a bit tricky and lengthy task, we can use the slope calculator to calculate the slope “m” of a linear equation. You can calculate the following terms. Slope from the equation of a line. Slope from two points. What is the slope of a line? The slope of a line is the steepness of a line or a curve, some other names for the slope are “gradient, slant, and incline.” To calculate the slope, we use the following formula. General formula of the slope: Generally, we use the following formula to calculate the slope “m”. m = rise / run = (y2 – y1) / (x2 – x1) 1. “x1, x2, y1, and y2 are the points on which the line lies on the cartesian coordinate. 2. “m” is the slope. Topographies: This slope calculator has many features that make it unique compared to other calculators. Input field: The input fields are very easy to use and very flexible. Separate boxes are designed for the ease of the user. Erasing all input: The “reset” button allows you to erase all the input at once. Calculate button: To calculate the result just tap on the “calculate” button. It will navigate you to the result screen. Mathematical format: Throughout the result section, “LaTeX” is used. LaTeX is a mathematical format used for writing mathematical expressions that makes the output easier to understand. UI/UX: This application has an amazing UI/UX that provides a user-friendly environment. Anyone can use this slope calculator easily. How to use the slope calculator? The procedure to calculate the slope with steps is quite easier with the help of this Slope calculator. You just have to follow the below steps: 1.Select the input type, “Line equation” or “Two points”. 2.Enter the values in the dedicated input boxes. 3.Press the “Calculate” button. In this way, you will get the step-by-step solution of the input. Install this application and make the calculation easier.
Screenshots
Verdict
The clearest difference is in-app purchases: Slope Calc at none against Bubble Level's 11. Slope Calc also leads on ads (none vs shown). Bubble Level's advantage is update cadence (weekly vs every 34 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
Both are free to download. Bubble Level sells 11 in-app purchases, starting at $1.99 per 7 days. Slope Calc asks for nothing beyond the download.
Bubble Level ships an update weekly, Slope Calc every 34 months. The most recent releases landed on September 24, 2026 and June 5, 2026 respectively.
| Parameter | Bubble Level | Slope Calc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (702 ratings) — better | — |
| Positive reviews | 41.4% of reviews | — |
| Number of ratings | 702 — better | — |
| Update frequency | Weekly — better | Every 34 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPod, Mac |
| Requires iOS | 16.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 43 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Jens Rieckhof | Abdul Rehman |
Bugs and requests
Bubble Level
Reported bugs
2 issues- App crashes on launch
- Measurement point behaves erratically
Requested features
2 requests- Ability to calibrate the app
- Option to change the display color
Slope Calc
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Bubble Level
- Premium - Weekly Plan$1.997 Days
- Spirit Level Premium – Monthly$2.991 Month
- Bubble Level Premium - Weekly$2.997 Days
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- Bubble Level Premium - Monthly$5.991 Month
- Spirit Level Premium – Annual7 Days trial$14.991 Year
- Bubble Level Premium - Annual7 Days trial$19.991 Year
- All features - No ads$1.99
- Unlock all AR features$5.99
- Discount Lifetime Premium$14.99
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- Bubble Level PREMIUM Lifetime$19.99
- Bubble Level - Lifetime Premium$29.99
Slope Calc
No in-app purchases
Questions
Is Bubble Level free?
Is Slope Calc free?
Do Bubble Level or Slope Calc have ads?
Which is updated more often, Bubble Level or Slope Calc?
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