# Angle Gradient Inclinometer vs Spirit Level Plus

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.

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. Both last shipped on September 27, 2026.

## The numbers

| Metric | Angle Gradient Inclinometer | Spirit Level Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (295 ratings)](https://appshunter.io/ios/app/angle-gradient-inclinometer/id530077112/reviews) | **[4.6 (2.3K ratings)](https://appshunter.io/ios/app/spirit-level-plus/id635314551/reviews)** |
| Number of ratings | 295 | **2.3K** |
| Positive reviews | **51.1% of reviews** | 23.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Every 6 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 11 MB | 26 MB |
| Requires iOS | 13 | **10.3** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SHIGETO TAKAGI](https://appshunter.io/developer/519611619) | [Tue Nguyen Minh](https://appshunter.io/developer/434811167) |

## What reviewers say

### Angle Gradient Inclinometer

[App page](https://appshunter.io/ios/app/angle-gradient-inclinometer/id530077112)

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.

**Highlights:** Measure tilt angles 0-359 degrees, Display gradient percentage, Show sum angles (180/360), Theodolite mode, Set specified angle to zero

**Features:** Vision Pro support

**In-app purchases:** none


### Spirit Level Plus

[App page](https://appshunter.io/ios/app/spirit-level-plus/id635314551)

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.

**Highlights:** Precise spirit level, Angle measurement, Slope measurement, Carpentry works, Home decoration

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tubular Level | $0.99 | one-time |

**What reviewers like**

- 🚀 Useful tool
- 👍 Handy for RVs and campers
- 👍 Accurate and reliable readings

**What reviewers complain about**

- 🐛 Crashes and freezes
- 🔒 Paywall for basic functionality
- 🔋 High battery consumption
- 👎 Overly aggressive monetization

**Reported bugs**

- Incompatibility with iOS 8.1
- Frequent timeouts and resets

**Requested features**

- Horizontal and vertical level display
- Calibration options
- More customization settings


## Frequently asked questions

### Is Angle Gradient Inclinometer free?

Angle Gradient Inclinometer is free to download, with no in-app purchases.

### Is Spirit Level Plus free?

Spirit Level Plus is free to download, with in-app purchases available.

### Which has better reviews, Angle Gradient Inclinometer or Spirit Level Plus?

Spirit Level Plus is rated higher. Angle Gradient Inclinometer averages 4.4 out of 5 from 295 ratings, while Spirit Level Plus averages 4.6 from 2.3K ratings.

### Do Angle Gradient Inclinometer or Spirit Level Plus have ads?

Angle Gradient Inclinometer shows ads; Spirit Level Plus does not.

### Which is updated more often, Angle Gradient Inclinometer or Spirit Level Plus?

Angle Gradient Inclinometer ships an update every 8 months, and Spirit Level Plus every 6 months. Most recently, Angle Gradient Inclinometer was updated on September 27, 2026 and Spirit Level Plus on September 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*