Angle Gradient Inclinometer vs Bubble Level®
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Angle Gradient Inclinometer
Easily measure tilt angles with this free protractor app. It displays inclination from 0 to 359 degrees, along with gradient percentages and angles summing to 180 or 360 degrees. Switch to theodolite mode to set a specified angle to zero.
- Measure tilt angles 0-359 degrees
- Display gradient percentage
- Show sum angles (180/360)
- Theodolite mode
- Set specified angle to zero
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Simple tilt angle protractor free application that can easily measure tilt simply by tilting the device. The angle of inclination measured from 0 degree to 359 degrees, converted gradient (%), angle at which sum is 180 degrees / 360 degrees are displayed at the same time. You can switch to the theodolite, the specified angle can be set to 0 degree. ( 45 Degrees = Gradient 100 % )
Bubble Level®
This app provides a digital bubble level with multiple viewing options for precise measurements. It can be used for surface leveling, angle measurement, and checking flatness, offering versatile utility for various tasks.
- Surface level viewing
- Portrait and landscape orientation
- Angle and slope measurement in percentage
- Carpenter's level functionality
- Surface flatness check
- Line level
- Compass
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Check Bubble Level in the palm of your hand!!! We have 3 different viewing options: Surface level, Portrait Level and Landscape Level. Bubble calibrates smoothly with all 4 sides as well as show the angle and slope in percentage. There are different types of Bubble Level Tools: ◆ Carpenter's level ◆ Angle measurement ◆ Surface flatness ◆ Line Level ◆ Compass
Screenshots
Verdict
The clearest difference is in-app purchases: Angle Gradient Inclinometer at none against Bubble Level®'s 1. Angle Gradient Inclinometer also leads on review sentiment (51% vs 33%) and ratings volume (295 vs 84). Bubble Level®'s advantage is iOS requirement (11.0 vs 13). On price, rating, update cadence and ads 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. Angle Gradient Inclinometer asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.4 for Angle Gradient Inclinometer against 4.4 for Bubble Level®. Both are backed by a comparable volume of ratings — 295 and 84 respectively. Written reviews are what separate them: 51% of Angle Gradient Inclinometer's written reviews are positive against 33% of Bubble Level®'s.
Angle Gradient Inclinometer ships an update every 8 months, Bubble Level® every 11 months. The most recent releases landed on October 10, 2026 and October 1, 2026 respectively.
| Parameter | Angle Gradient Inclinometer | Bubble Level® |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (295 ratings) | 4.4 (84 ratings) |
| Positive reviews | 51.1% of reviews — better | 33.3% of reviews |
| Number of ratings | 295 — better | 84 |
| Update frequency | Every 8 months — better | Every 11 months |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13 | 11.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | SHIGETO TAKAGI | Tripti Kumari |
Customer experience
Angle Gradient Inclinometer
Bubble Level®
In-app purchases
Angle Gradient Inclinometer
No in-app purchases
Bubble Level®
- Remove Ads$3.99
Questions
Is Angle Gradient Inclinometer free?
Is Bubble Level® free?
Which has better reviews, Angle Gradient Inclinometer or Bubble Level®?
Do Angle Gradient Inclinometer or Bubble Level® have ads?
Which is updated more often, Angle Gradient Inclinometer or Bubble Level®?
Other comparisons
