# Angle Gradient Inclinometer vs PV Solar Tilt

The clearest difference is in-app purchases: Angle Gradient Inclinometer at none against PV Solar Tilt's 1. Angle Gradient Inclinometer also leads on review sentiment (51% vs 33%). PV Solar Tilt's advantage is update cadence (every 4 months vs every 8 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. PV Solar Tilt 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 PV Solar Tilt. Both are backed by a comparable volume of ratings — 295 and 157 respectively. Written reviews are what separate them: 51% of Angle Gradient Inclinometer's written reviews are positive against 33% of PV Solar Tilt's.

Angle Gradient Inclinometer ships an update every 8 months, PV Solar Tilt every 4 months. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Angle Gradient Inclinometer | PV Solar Tilt |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (295 ratings)](https://appshunter.io/ios/app/angle-gradient-inclinometer/id530077112/reviews)** | [4.4 (157 ratings)](https://appshunter.io/ios/app/pv-solar-tilt/id1492982128/reviews) |
| Number of ratings | **295** | 157 |
| Positive reviews | **51.1% of reviews** | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 8 months | **Every 4 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 11 MB | 14 MB |
| Requires iOS | 13 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SHIGETO TAKAGI](https://appshunter.io/developer/519611619) | [Igor Ilijovski](https://appshunter.io/developer/1492982127) |

## 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


### PV Solar Tilt

[App page](https://appshunter.io/ios/app/pv-solar-tilt/id1492982128)

Determine the ideal tilt angle for your photovoltaic system to maximize electricity generation. This app provides solar data, optimization tools, and an on-site inclinometer to ensure your panels are optimally positioned for your location.

**Highlights:** Solar data charts, Tilt vs azimuth optimization, Optimal tilt angle for any location, Optimal orientation, Monthly, daily, and hourly tilt optimization, On-site inclinometer

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime license | $14.99 | one-time |


## Frequently asked questions

### Is Angle Gradient Inclinometer free?

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

### Is PV Solar Tilt free?

PV Solar Tilt is free to download, with in-app purchases available.

### Which has better reviews, Angle Gradient Inclinometer or PV Solar Tilt?

Angle Gradient Inclinometer is rated higher. Angle Gradient Inclinometer averages 4.4 out of 5 from 295 ratings, while PV Solar Tilt averages 4.4 from 157 ratings.

### Do Angle Gradient Inclinometer or PV Solar Tilt have ads?

Both Angle Gradient Inclinometer and PV Solar Tilt show ads.

### Which is updated more often, Angle Gradient Inclinometer or PV Solar Tilt?

Angle Gradient Inclinometer ships an update every 8 months, and PV Solar Tilt every 4 months. Most recently, Angle Gradient Inclinometer was updated on October 14, 2026 and PV Solar Tilt on October 16, 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.*