# SlopeCalc: Grade & Ramp — Drainage, ADA & pitch

> Drainage, ADA & pitch (iPhone/iPad app by Yoshifumi Sato.)

- Source: https://appshunter.io/ios/app/slopecalc-grade-and-ramp/id6794645706 (this page in markdown: same URL + `.md`)
- Developer: [Yoshifumi Sato](https://appshunter.io/developer/6780413827)
- Category: Utilities
- Price: $3.99
- Age rating: 4+
- Requires: iOS 17.0 · 12 MB
- Languages: American English
- Released: 2026-08-05
- Data updated: 2026-08-23
- User reviews in markdown: https://appshunter.io/ios/app/slopecalc-grade-and-ramp/id6794645706/reviews.md

## What is SlopeCalc?

SlopeCalc is the grade and slope calculator for landscapers, concrete and deck builders, civil and drainage work. Convert any slope between every representation and check compliance in seconds.

CONVERT ANY SLOPE
- Enter rise & run, or a grade %, angle, ratio (1:N) or rise per foot.
- Instantly see all of them at once: grade %, angle, ratio and rise per foot.

CHECK COMPLIANCE
- Drainage minimum (1% or 2%), ADA ramp maximum (8.33% / 1:12) and ADA cross-slope maximum (2.08% / 1:48), with clear pass / fail badges.

RUN & DROP
- Find the drop over a run at a given grade, or the grade from a run and drop.

STANDARDS REFERENCE
- Common grade standards and roof pitches at a glance.

MADE FOR THE FIELD
- Big, high-contrast numbers that read well outdoors.
- Buy once. No subscription. No ads. Works completely offline, with nothing to sign in to and no data leaving your device.


## Version history (last 1 release)

### 1.0 — 2026-08-05

No release notes.

## More apps by Yoshifumi Sato

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- [Progressly – Body Progress](https://appshunter.io/ios/app/progressly-body-progress/id6789591055)
- [Holdly – Isometric Timer](https://appshunter.io/ios/app/holdly-isometric-timer/id6789790139)
- [かんじ1年生 小学1年の漢字ドリル](https://appshunter.io/ios/app/1-1/id6789917332)
- [かんじ3年生 小学3年の漢字ドリル](https://appshunter.io/ios/app/3-3/id6790055787)

All apps by Yoshifumi Sato: https://appshunter.io/developer/6780413827

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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 2026-08-23.*