# Ruler ++ vs Angle Gradient Inclinometer

The clearest difference is rating: Angle Gradient Inclinometer at 4.4 against Ruler ++'s 3.5. Angle Gradient Inclinometer also leads on review sentiment (51% vs 15%) and in-app purchases (none vs 1). Ruler ++'s advantage is ads (none vs shown) and ratings volume (934 vs 295). On price, update cadence and device support there is nothing between them.

Both are free to download. Ruler ++ sells 1 one-off in-app purchase. Angle Gradient Inclinometer asks for nothing beyond the download.

Angle Gradient Inclinometer holds the better App Store score, 4.4 against 3.5. Both are backed by a comparable volume of ratings — 934 and 295 respectively. Written reviews point the same way: 15% of Ruler ++'s written reviews are positive against 51% of Angle Gradient Inclinometer's.

Ruler ++ ships an update every 5 months, Angle Gradient Inclinometer every 8 months. The most recent releases landed on October 17, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Ruler ++ | Angle Gradient Inclinometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (934 ratings)](https://appshunter.io/ios/app/ruler-plus-plus/id381682088/reviews) | **[4.4 (295 ratings)](https://appshunter.io/ios/app/angle-gradient-inclinometer/id530077112/reviews)** |
| Number of ratings | **934** | 295 |
| Positive reviews | 14.9% of reviews | **51.1% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 5 months** | Every 8 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 17 MB | 11 MB |
| Requires iOS | **8.0** | 13 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fapps World et Cie S.E.C.S.](https://appshunter.io/developer/881437066) | [SHIGETO TAKAGI](https://appshunter.io/developer/519611619) |

## What reviewers say

### Ruler ++

[App page](https://appshunter.io/ios/app/ruler-plus-plus/id381682088)

This app allows you to measure lengths accurately in both inches and centimeters. It provides a simple and straightforward tool for quick measurements.

**Highlights:** Measure in inches, Measure in centimeters, Accurate length measurement, Simple interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advertisement-free upgrade | $0.99 | one-time |

**What reviewers like**

- 👍 Simple and quick to use
- 👍 Includes both metric and Imperial measures
- 🚀 Great for wanting to measure displayed length

**What reviewers complain about**

- 🐛 Measurements are not accurate
- 🐛 Ruler not matching real-world measurements
- 🐛 Ruler not scaling properly on different devices
- 🔋 Ads make it impossible to use
- 🔋 Constant, intrusive ads

**Reported bugs**

- Ruler markings are incorrect
- Ruler not displaying full length on screen
- Incompatible with newer iPhone models

**Requested features**

- Add ability to calibrate ruler for different devices
- Improve accuracy of measurements
- Reduce or remove ads


### 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


## Frequently asked questions

### Is Ruler ++ free?

Ruler ++ is free to download, with in-app purchases available.

### Is Angle Gradient Inclinometer free?

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

### Which has better reviews, Ruler ++ or Angle Gradient Inclinometer?

Angle Gradient Inclinometer is rated higher. Ruler ++ averages 3.5 out of 5 from 934 ratings, while Angle Gradient Inclinometer averages 4.4 from 295 ratings.

### Do Ruler ++ or Angle Gradient Inclinometer have ads?

Angle Gradient Inclinometer shows ads; Ruler ++ does not.

### Which is updated more often, Ruler ++ or Angle Gradient Inclinometer?

Ruler ++ ships an update every 5 months, and Angle Gradient Inclinometer every 8 months. Most recently, Ruler ++ was updated on October 17, 2026 and Angle Gradient Inclinometer on October 18, 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.*