# Slope Calculator - Calc — Ratio, Angle, Length, Percent

> Right triangle slope calculator for angle, percentage, and ratio. (iPhone/iPad app by Phan Nhat Đang.)

- Source: https://appshunter.io/ios/app/slope-calculator-calc/id1561129699 (this page in markdown: same URL + `.md`)
- Developer: [Phan Nhat Đang](https://appshunter.io/developer/1437390098)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 4.30/5 from 104 App Store ratings · 12 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 5 MB
- Languages: Russian, Vietnamese, American English, Dutch, Danish, Indonesian, Latin American Spanish, Italian, Korean, Malay and 12 more
- Released: 2021-04-08
- Data updated: 2026-08-31
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/slope-calculator-calc/id1561129699/reviews.md

## What is Slope Calculator?

Use this App to calculate slope (Angle, Percentage, Ratio). You just need to enter 2 of the 3 sides of a right triangle, we will calculate for you the remaining necessary numbers. This is a very intuitive App, simple and easy to use.

Results are estimates for informational purposes only.

We are very happy to serve you. If you have any requests, don't hesitate to contact us.
- https://www.facebook.com/phan.nhatdang.3/
- phannhatd@gmail.com

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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


## Recent user reviews (10 of 12)

All indexed reviews: https://appshunter.io/ios/app/slope-calculator-calc/id1561129699/reviews.md

### 1/5 — 広告がウザ

*2026-04-16*

使用時ミュート必須📵

### 1/5 — Bad

*2026-01-11*

I get the free aversion is going to have commercials but that is a bit overbearing.

### 1/5 — 広告がウザい

*2025-09-11*

広告がウザくて使いづらい

### 1/5 — Adds

*2025-08-29*

The adds lock you out for 10-15 seconds to see your calculations

### 5/5 — 优秀的小工具

*2025-08-02*

很简便，直观，很好用。

### 5/5 — 簡単

*2025-02-09*

簡単に結果が出ていい。　
勾配比率での表示があるので尚良い

### 5/5 — E

*2024-08-22*

K

### 5/5 — Phần mềm

*2024-08-19, version 1.2.0*

OK rất tốt

### 5/5 — Jim’s Review

*2023-08-17*

Love this app. Use it often. Makes my job a lot simpler and saves time.

### 5/5 — Ok

*2023-08-15, version 1.2.0*

Tuyệt vời

## Frequently asked questions about Slope Calculator

### What can Slope Calculator calculate?

Slope Calculator can determine the slope of a right triangle in terms of angle, percentage, and ratio. You only need to provide two sides of the triangle, and it will compute the rest.

### Is Slope Calculator free to use?

Yes, Slope Calculator is free to download and use. It is supported by ads and offers in-app purchases.

### What devices is Slope Calculator available on?

Slope Calculator is available on iPhone, iPad, and iPod devices.

### How often is Slope Calculator updated?

The latest version, 1.2.0, was released on August 2, 2023. Updates ensure the app remains functional and may introduce improvements.

### What is the age rating for Slope Calculator?

Slope Calculator has an age rating of 4+, making it suitable for a wide range of users.

### How accurate are the calculations in Slope Calculator?

The app is designed for accurate slope calculations based on the provided triangle side lengths. User feedback indicates a 4.4-star rating from 93 reviews.

### Can I contact the developer if I have issues with Slope Calculator?

Yes, you can contact the developer, Phan Nhat Đang, via email at phannhatd@gmail.com or through their Facebook page.

## Version history (last 5 releases)

### 1.4.0 — 2026-06-09

Bug fixes and performance improvements

### 1.3.0 — 2026-04-23

Bug fixes and performance improvements

### 1.2.0 — 2023-08-02

Bug fixes and performance improvements

### 1.1.0 — 2021-10-25

Bug fixes and performance improvements

### 1.0.0 — 2021-04-08

No release notes.

## Apps similar to Slope Calculator

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| --- | --- | --- | --- |
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| [Angle Meter](https://appshunter.io/ios/app/angle-meter/id422843391) | 3.3 (58) | Free | Utilities |

## More apps by Phan Nhat Đang

- [Compound Interest Calc: Growth](https://appshunter.io/ios/app/compound-interest-calc-growth/id1437390099)
- [Weight loss journal, diary](https://appshunter.io/ios/app/weight-loss-journal-diary/id1455057273)
- [Basic grocery list + price](https://appshunter.io/ios/app/basic-grocery-list-plus-price/id1477000933)
- [GFR Calculator - eGFR Calc](https://appshunter.io/ios/app/gfr-calculator-egfr-calc/id1485507590)
- [Auto Loan Calculator - Car](https://appshunter.io/ios/app/auto-loan-calculator-car/id1487930075)
- [Mortgage Calculator: Payment](https://appshunter.io/ios/app/mortgage-calculator-payment/id1489668528)

All apps by Phan Nhat Đang: https://appshunter.io/developer/1437390098

## Related topics

[slope calculator](https://appshunter.io/ios/topics/slope-calculator) · [height calculator triangle](https://appshunter.io/ios/topics/height-calculator-triangle) · [slope calc](https://appshunter.io/ios/topics/slope-calc) · [slope calculation tool](https://appshunter.io/ios/topics/slope-calculation-tool) · [geometry calculator pro](https://appshunter.io/ios/topics/geometry-calculator-pro) · [angle gradient inclinometer](https://appshunter.io/ios/topics/angle-gradient-inclinometer) · [slope angle](https://appshunter.io/ios/topics/slope-angle) · [helix angle calculator](https://appshunter.io/ios/topics/helix-angle-calculator)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*