# Slope Calculator vs pipelayerpro

The clearest difference is rating: pipelayerpro at 5.0 against Slope Calculator's 4.3. pipelayerpro also leads on review sentiment (100% vs 58%) and in-app purchases (none vs 1). Slope Calculator's advantage is ads (none vs shown) and ratings volume (104 vs 2). On price and device support there is nothing between them.

Both are free to download. Slope Calculator sells 1 one-off in-app purchase. pipelayerpro asks for nothing beyond the download.

pipelayerpro holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Slope Calculator has 104 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 58% of Slope Calculator's written reviews are positive against 100% of pipelayerpro's.

Slope Calculator ships an update every 14 months, pipelayerpro daily. The most recent releases landed on October 23, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Slope Calculator | pipelayerpro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (104 ratings)](https://appshunter.io/ios/app/slope-calculator-calc/id1561129699/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pipelayerpro/id6742408995/reviews)** |
| Number of ratings | **104** | 2 |
| Positive reviews | 58.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Daily** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 5 MB | 55 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) | [Keith Bollinger](https://appshunter.io/developer/1798226970) |

## What reviewers say

### Slope Calculator

[App page](https://appshunter.io/ios/app/slope-calculator-calc/id1561129699)

Calculate slope in angle, percentage, or ratio by inputting two sides of a right triangle. This intuitive and easy-to-use application provides the remaining necessary values.

**Highlights:** Calculate slope as angle, Calculate slope as percentage, Calculate slope as ratio, Input two sides of a right triangle, Calculate remaining triangle values, Intuitive and easy to use

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


### pipelayerpro

[App page](https://appshunter.io/ios/app/pipelayerpro/id6742408995)

This utility app assists excavators in calculating structure elevations and pipe slopes. It simplifies complex onsite calculations, reducing errors for both experienced and novice operators. The goal is to improve accuracy and profitability for construction projects.

**Highlights:** Structure elevation calculation, Pipe slope calculation, Easy to use interface, Reduces onsite calculation errors, Aids in profitability

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Slope Calculator free?

Slope Calculator is free to download, with in-app purchases available.

### Is pipelayerpro free?

pipelayerpro is free to download, with no in-app purchases.

### Which has better reviews, Slope Calculator or pipelayerpro?

pipelayerpro is rated higher. Slope Calculator averages 4.3 out of 5 from 104 ratings, while pipelayerpro averages 5.0 from 2 ratings.

### Do Slope Calculator or pipelayerpro have ads?

pipelayerpro shows ads; Slope Calculator does not.

### Which is updated more often, Slope Calculator or pipelayerpro?

Slope Calculator ships an update every 14 months, and pipelayerpro daily. Most recently, Slope Calculator was updated on October 23, 2026 and pipelayerpro on October 2, 2026.

---

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