Bubble Level vs Smart Level
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Measure surface level
- Calibrate with one click
- Accurate to 0.1 degree
- Retina display support
- Picture frame alignment
- Angle and slope measurement
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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!
Smart Level
This utility app transforms your smartphone into a precise spirit level. It measures horizontal and vertical surfaces, displaying the angle of inclination. Ideal for home repairs and professional use, it offers ease of use and accurate readings.
- Smartphone spirit level
- Measures horizontal and vertical surfaces
- Displays angle of inclination
- Bull's eye level for 2D measurement
- Precise and easy to use
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Reduce the weight of your toolbox – all you need is your smartphone. Also known as a spirit level or buble level – but the name doesn’t matter. What matters is the fact, that with the help of this device you can easily determine whether a given surface is really horizontal. Used by professionals: builders, stonemasons, carpenters, inspectors, metalworkers, but also by ordinary DIY enthusiasts – our spirit level will certainly help you with any home repairs. Our device is based on bull's eye level (also known as circular bubble) which measures the level simultaneously in two dimensions – horizontal and vertical. Netigen Utilities: Level checks not only whether a surface is horizontal, but also shows the angle of inclination. If the surface is horizontal, the ball, shown on the screen, will be in the exact center of the circle and the center will turns white. It works just like a physical device! Ease of use, precision and a unique design distinguish our level, comparing to other similar applications. Recommended for those who appreciate precise tools and job well done.
Screenshots
Verdict
The clearest difference is rating: Bubble Level at 4.6 against Smart Level's 3.5. Bubble Level also leads on ratings volume (3.1K vs 2). Smart Level's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, update cadence, in-app purchases 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
Both are free to download. Bubble Level sells 1 one-off in-app purchase and Smart Level sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Bubble Level holds the better App Store score, 4.6 against 3.5. That said, the two scores are not equally well evidenced: Bubble Level has 3.1K ratings behind it against 2, so its average is the more settled of the two.
Bubble Level ships an update every 10 months, Smart Level every 12 months. The most recent releases landed on October 20, 2026 and October 10, 2026 respectively.
| Parameter | Bubble Level | Smart Level |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (3.1K ratings) — better | 3.5 (2 ratings) |
| Positive reviews | 29.4% of reviews | — |
| Number of ratings | 3.1K — better | 2 |
| Update frequency | Every 10 months — better | Every 12 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 7.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 23 MB |
| Age rating | 12+ | 4+ |
| Developer | Netviking AB | NETIGEN Kluzowicz sp. j. |
Customer experience
Bubble Level
Smart Level
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
Smart Level
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Bubble Level
- Pro Upgrade$4.99
Smart Level
- AdFree$0.99
Questions
Is Bubble Level free?
Is Smart Level free?
Which has better reviews, Bubble Level or Smart Level?
Do Bubble Level or Smart Level have ads?
Which is updated more often, Bubble Level or Smart Level?
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