# Slope Calculation Tool — Incline, Percentage & Ratio > Calculates ramp dimensions and measures surface slopes using device sensors. (iPhone/iPad app by Riyad Habash.) - Source: https://appshunter.io/ios/app/slope-calculation-tool/id1442177142 (this page in markdown: same URL + `.md`) - Developer: [Riyad Habash](https://appshunter.io/developer/1073719756) - Category: Reference, Productivity - Price: Free - Rating: 4.30/5 from 84 App Store ratings · 14 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 12 MB - Languages: American English, Arabic, German (Germany), Russian, Chinese (Simplified, China) - Released: 2018-11-15 - Data updated: 2026-08-07 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/slope-calculation-tool/id1442177142/reviews.md ## What is Slope Calculation Tool? With any (two inputs), the app will calculate all of ramp's information accurately: - Slope (incline). - Run (horizontal travel). - Ramp Length. - Rise (Height). - Slope (Percentage, Ratio & Angle). Possible scenarios of calculation: by adding any of the following inputs, the app shall calculates the rest: - Run & Rise. - Run & Length. - Rise & Length. - (Slope percentage, Slope Ratio or Slope Angle) with any of (Rise, Length or Run). The App has a built-in tool to measure the slope of an existing ramp or a surface, by using the capabilities of your iPhone / iPad device. * Remember to use a proper protection case though, to prevent your device from scratches and to give it a perfect flat shape, for better accuracy. ## Key features - Calculate slope, run, length, and rise - Supports multiple input combinations - Measure existing surface slopes - Uses device sensors for measurement - Calculates slope as percentage, ratio, and angle ## Recent user reviews (10 of 14) All indexed reviews: https://appshunter.io/ios/app/slope-calculation-tool/id1442177142/reviews.md ### 5/5 — Simple, clean and functional *2026-06-09, version 6.4* Thanks for the great app ### 1/5 — Spinning *2026-05-25* Couldn’t get it to load. Just spun. ### 2/5 — It’s ok *2025-08-28* This app would work perfectly for what I would need if it had a few more options like the ability to to add negative number into the rise so it’s negative not just positive. Also the ability to be in inches and in feet. Not just a basic numeral number. ### 5/5 — Thanks *2025-08-03, version 6.4* lovly app ### 5/5 — Superb *2021-08-16, version 6.0.0* A rare thing now…. A good app, does what it says it’ll do, no fuss, no adverts…..and no fee! Just drop your phone on the ground (or place it down carefully in line with manufacturers recommendations) and it tells you the slope in degrees, percentages and ratio. Thanks guys, nice one 👍 ### 1/5 — Ehhhh *2021-06-10* It may work. But I didn’t know the height of my building so it won’t work for me. **Developer response:** Well, you can contact us through the app’s help page in the settings panel, or via our website, just simply explain what you want to calculate and we will help you out.. some times it’s as simple as explaining how to use the app! ### 4/5 — Slope *2021-06-02* App seems to work great one thing that’s kind of annoying as I’m trying to calculate the slope between two points so I have to actually use a calculator and get those numbers which isn’t that much of a hassle but it be nice if you can type in the slope calculator to do those calculations in the app that would be great instead of having to use two different calculators. **Developer response:** Thanks for your review, we have previously added several functionalities based on requests we received from valued suggestions from users. We might be able to do so here and add functionality that could make the app experience better for you and other users. All you need to do is to contact us via the help page in the app or on our website, and explain how do you calculate, what are the challenges and what is your suggestion. ### 5/5 — Simple app does exactly what its supposed to do. *2021-05-31, version 5.3.1* Simple app does exactly what its supposed to do. One way to improve it (at least for my purposes) is to keep the same entries in the fields. When I enter 9.6 in run and 2.5 in rise, the result is 26.04%. But if I want to change the run to 8.3, I have to enter the rise figure again. Its just a little thing, but having persistent numbers would be easier than having to enter it again. Thanks! ### 5/5 — Excellent app *2020-10-13, version 5.0.3* A must have for building sites. ### 5/5 — A go-to app for me now *2020-09-08* Works quite well. ## Frequently asked questions about Slope Calculation Tool ### What ramp information can Slope Calculation Tool calculate? Slope Calculation Tool can accurately calculate the slope (incline), run (horizontal travel), ramp length, and rise (height). It also provides the slope in percentage, ratio, and angle formats. ### What input combinations does Slope Calculation Tool support? You can input any two values to have the rest calculated. Supported combinations include Run & Rise, Run & Length, Rise & Length, or a slope value (percentage, ratio, or angle) with Rise, Length, or Run. ### Can Slope Calculation Tool measure existing surfaces? Yes, Slope Calculation Tool has a built-in tool that uses your iPhone or iPad's sensors to measure the slope of an existing ramp or surface. ### What devices is Slope Calculation Tool compatible with? Slope Calculation Tool is compatible with Mac, iPhone, iPad, and iPod devices, making it accessible across Apple's ecosystem. ### How accurate is the slope measurement feature? For best accuracy, it's recommended to use a proper protection case on your device to ensure a perfect flat shape during measurement. ### What is the age rating for Slope Calculation Tool? Slope Calculation Tool has an age rating of 4+, making it suitable for a wide range of users. ### When was Slope Calculation Tool last updated? The latest version, 6.4, was last updated on December 30, 2024, indicating active development and support. ### What is the user rating for Slope Calculation Tool? Slope Calculation Tool has a strong user rating of 4.3 stars based on 75 ratings, suggesting positive user satisfaction. ## Version history (last 5 releases) ### 6.4 — 2024-12-30 Bugs fix ### 6.3 — 2023-10-02 Bug fix that caused the app to crash in the imperial mode ### 6.2.1 — 2023-07-30 Bugs fix ### 6.2 — 2022-10-12 We have added new functionality to subtract two levels and calculate the height and then calculate the slope. now when you tap on the height you can add a level then "-" and another level (the input order is not important) then the app will calculate the height automatically please visit our website, we will add a new tutorial soon. ### 6.1 — 2022-09-25 Bugs fix ## Apps similar to Slope Calculation Tool | App | Rating | Price | Category | | --- | --- | --- | --- | | [OSHA Safety Standards](https://appshunter.io/ios/app/osha-safety-standards/id6451746063) | 4.7 (31) | Free | Reference | | [SDS Mobile](https://appshunter.io/ios/app/sds-mobile/id467738315) | 3.6 (18) | Free | Reference | | [United Rentals Trench Safety](https://appshunter.io/ios/app/united-rentals-trench-safety/id6475898909) | 5.0 (1) | Free | Reference | ## More apps by Riyad Habash - [Finance & Tax](https://appshunter.io/ios/app/finance-and-tax/id1117549453) - [Storm!](https://appshunter.io/ios/app/storm/id1118753431) - [Equations-X](https://appshunter.io/ios/app/equations-x/id1179127721) - [Le BETON](https://appshunter.io/ios/app/le-beton/id1222740753) - [TIMEA](https://appshunter.io/ios/app/timea/id1373940612) - [DOT Parking Calculator](https://appshunter.io/ios/app/dot-parking-calculator/id1441850416) All apps by Riyad Habash: https://appshunter.io/developer/1073719756 ## Related topics [slope calculation tool](https://appshunter.io/ios/topics/slope-calculation-tool) · [benchmark slope](https://appshunter.io/ios/topics/benchmark-slope) · [slope calculator plus](https://appshunter.io/ios/topics/slope-calculator-plus) · [slope calculator & tools](https://appshunter.io/ios/topics/slope-calculator-tools) · [slope calculator](https://appshunter.io/ios/topics/slope-calculator) · [pipe slope calculator](https://appshunter.io/ios/topics/pipe-slope-calculator) · [slope calc](https://appshunter.io/ios/topics/slope-calc) · [slope finder](https://appshunter.io/ios/topics/slope-finder) · [inclinometer for slope measurement](https://appshunter.io/ios/topics/inclinometer-for-slope-measurement) --- *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 2026-08-07.*