Angle Gradient Inclinometer vs Spirit Level Plus
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 % )
Spirit Level Plus
This app transforms your iPhone into a precise spirit level. It's ideal for various tasks including carpentry, home decoration, and measuring angles and slopes.
- Precise spirit level
- Angle measurement
- Slope measurement
- Carpentry works
- Home decoration
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Spirit Level is optimized for iPhone 13 and iPhone 13 Pro! Also check out iMetalBox: 7 in 1, get 6 more tools with the price of one! You can use Spirit Level for: - Carpentry works - 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 one time for the face-up orientation only.
Screenshots
Verdict
The clearest difference is in-app purchases: Angle Gradient Inclinometer at none against Spirit Level Plus's 1. Angle Gradient Inclinometer also leads on review sentiment (51% vs 23%). Spirit Level Plus's advantage is ads (none vs shown) and ratings volume (2.3K vs 295). On price, rating, update cadence 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. Spirit Level Plus sells 1 one-off in-app purchase. Angle Gradient Inclinometer asks for nothing beyond the download.
Spirit Level Plus holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Spirit Level Plus has 2.3K ratings behind it against 295, so its average is the more settled of the two. Written reviews complicate that: 51% of Angle Gradient Inclinometer's written reviews are positive against 23% of Spirit Level Plus's, so the app with the better star average is not the one people write more warmly about.
Angle Gradient Inclinometer ships an update every 8 months, Spirit Level Plus every 6 months. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.
| Parameter | Angle Gradient Inclinometer | Spirit Level Plus |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (295 ratings) | 4.6 (2.3K ratings) — better |
| Positive reviews | 51.1% of reviews — better | 23.3% of reviews |
| Number of ratings | 295 | 2.3K — better |
| Update frequency | Every 8 months | Every 6 months — better |
| Ads | Yes | No — better |
| 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 | 10.3 — better |
| Further details — not scored | ||
| Size | 11 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | SHIGETO TAKAGI | Tue Nguyen Minh |
Customer experience
Angle Gradient Inclinometer
Spirit Level Plus
Bugs and requests
Angle Gradient Inclinometer
Not enough reviews yet to summarise bugs or requests.
Spirit Level Plus
Reported bugs
2 issues- Incompatibility with iOS 8.1
- Frequent timeouts and resets
Requested features
3 requests- Horizontal and vertical level display
- Calibration options
- More customization settings
In-app purchases
Angle Gradient Inclinometer
No in-app purchases
Spirit Level Plus
- Tubular Level$0.99
Questions
Is Angle Gradient Inclinometer free?
Is Spirit Level Plus free?
Which has better reviews, Angle Gradient Inclinometer or Spirit Level Plus?
Do Angle Gradient Inclinometer or Spirit Level Plus have ads?
Which is updated more often, Angle Gradient Inclinometer or Spirit Level Plus?
Other comparisons
