# WRAP-Iowa Ramp Design Aid

> Calculates stair rise/run and wheelchair ramp stringer cut angles. (iPhone/iPad app by THE WHEELCHAIR RAMP ACCESSIBILITY PROGRAM COALITION.)

- Source: https://appshunter.io/ios/app/wrap-iowa-ramp-design-aid/id1512276816 (this page in markdown: same URL + `.md`)
- Developer: [THE WHEELCHAIR RAMP ACCESSIBILITY PROGRAM COALITION](https://appshunter.io/developer/1512276215)
- Category: Utilities
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 13.2 · 2 MB
- Languages: English
- Released: 2020-05-08
- Data updated: 2026-07-07
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/wrap-iowa-ramp-design-aid/id1512276816/reviews.md

## What is WRAP?

This app provides suggested measurements for stairs rise and run as well as for the suggested cut angle for wheelchair ramp stringers.  In the Calculate Riser Heights screen, the user can enter a single height value to have the app calculate all of the required measurements to cut the stringer rise and run to build stairs. If the user has a specific number of risers, there is an over-ride that will calculate all values given the entered number of risers. In the Calculate Stringer Cut Angle screen, the user can enter an overall height between the two ends of the stringer as well as the length of the stringer and the app will calculate the angle at which the ends of the stringer must be cut.. The app also includes links to the WRAP Iowa website and to an excellent article on stair construction on the Fine Woodworking website.

## Key features

- Calculate stair riser heights
- Calculate stringer cut angles
- Automated measurement calculations
- Override for specific riser numbers
- Links to relevant websites


## Frequently asked questions about WRAP

### How does WRAP-Iowa Ramp Design Aid calculate stair measurements?

You can enter a single height value, and the app will calculate all required measurements for stair stringers. Alternatively, if you have a specific number of risers, you can input that, and the app will calculate all values accordingly.

### What is the purpose of the stringer cut angle calculation in WRAP-Iowa Ramp Design Aid?

This feature allows you to enter the overall height between the ends of a stringer and its length. The app then calculates the precise angle at which the ends of the stringer must be cut for accurate construction.

### Does WRAP-Iowa Ramp Design Aid have ads?

No, WRAP-Iowa Ramp Design Aid is ad-free, providing an uninterrupted user experience for its calculations and resources.

### What devices does WRAP-Iowa Ramp Design Aid support?

WRAP-Iowa Ramp Design Aid is available on iPhone, iPad, and iPod, making it accessible for a wide range of Apple users.

### How often is WRAP-Iowa Ramp Design Aid updated?

The app was last updated on March 25, 2025, indicating recent maintenance and potential improvements. Its latest version is 4.

### What is the age rating for WRAP-Iowa Ramp Design Aid?

WRAP-Iowa Ramp Design Aid has an age rating of 4+, making it suitable for a broad audience without mature content concerns.

### Where can I find more information about WRAP-Iowa Ramp Design Aid?

The app includes direct links to the WRAP Iowa website and an article on stair construction from Fine Woodworking, providing users with additional resources.

### Is WRAP-Iowa Ramp Design Aid free to use?

Yes, WRAP-Iowa Ramp Design Aid is completely free to download and use, with no in-app purchases or advertisements.

## Version history (last 5 releases)

### 4 — 2025-03-25

I added a new calculation to the Stair Riser function that allows the user to specify the tread thickness. In the prior version, the app required the use of 1 3/16 thick deck boards. I also cleaned up the presentation of results by either moving the screen or dismissing the keyboard

### 3.3 — 2024-04-08

Resolved a formatting issue.

### 3.1 — 2024-04-07

A new feature is added to allow the user to calculate the diagonal dimension when framing a wheelchair landing, or any other square or rectangular construction.

### 2.6 — 2024-03-22

This upgrade adds a point-to-point calculation that is used to validate the layout of stringers to compare with the rise and run layout.

### 2.5 — 2024-03-15

I apologize to my users. In the last two updates, I have tested the app using simulators and my phone; however when the app was released, the Calculate Riser screen has been absent of text. I believe the issue is now resolved.

## Apps similar to WRAP

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Construction Calculator++](https://appshunter.io/ios/app/construction-calculator-plus-plus/id749110889) | 4.1 (47) | $2.99 | Utilities |
| [Stair Stringer](https://appshunter.io/ios/app/stair-stringer/id1550828339) | 4.7 (75) | $1.99 | Utilities |
| [Feet and Inches Calculator](https://appshunter.io/ios/app/feet-and-inches-calculator/id1072241945) | 4.6 (384) | Free | Utilities |
| [Carpenter Square & Stair Calc](https://appshunter.io/ios/app/carpenter-square-and-stair-calc/id1305126201) | 2.8 (111) | $1.99 | Utilities |
| [Construction Calculator Master](https://appshunter.io/ios/app/construction-calculator-master/id1623283646) | 4.3 (436) | Free | Utilities |
| [Construction Master Pro Calc](https://appshunter.io/ios/app/construction-master-pro-calc/id370406446) | 4.8 (38,615) | Free | Utilities |

## More apps by THE WHEELCHAIR RAMP ACCESSIBILITY PROGRAM COALITION

- [Mayberry Trivia I](https://appshunter.io/ios/app/mayberry-trivia-i/id1513236423)
- [Mayberry Trivia V](https://appshunter.io/ios/app/mayberry-trivia-v/id1513236778)
- [Mayberry Trivia III](https://appshunter.io/ios/app/mayberry-trivia-iii/id1513236837)
- [Mayberry Trivia IV](https://appshunter.io/ios/app/mayberry-trivia-iv/id1513236845)
- [Mayberry Trivia VI](https://appshunter.io/ios/app/mayberry-trivia-vi/id1516293972)

All apps by THE WHEELCHAIR RAMP ACCESSIBILITY PROGRAM COALITION: https://appshunter.io/developer/1512276215

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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 2026-07-07.*