# PipeGrade: Pipe Slope Gauge — Measure Fall, Grade & Drop

> Measure Fall, Grade & Drop (iPhone/iPad app by Linfeng He.)

- Source: https://appshunter.io/ios/app/pipegrade-pipe-slope-gauge/id6801428752 (this page in markdown: same URL + `.md`)
- Developer: [Linfeng He](https://appshunter.io/developer/1209834914)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2026-08-21
- Data updated: 2026-08-22
- User reviews in markdown: https://appshunter.io/ios/app/pipegrade-pipe-slope-gauge/id6801428752/reviews.md

## What is PipeGrade?

Turn your iPhone into a practical pipe-slope gauge for plumbing, drainage, sewer, and DWV work. PipeGrade helps plumbers, contractors, installers, and DIY users plan runs, measure grade, and keep organized field records.
Measure live slope with the motion sensors, calibrate flat and side-edge placements separately, check direction and stability, lock readings, and save them to a pipe run. Calculate slope, fall, horizontal run, or end elevation, then generate station and invert-elevation schedules. Organize projects with notes and field photos, and export field-ready PDF or CSV reports.
Supports metric and imperial units, including percent, degrees, in/ft, mm/m, and 1:X. Project data stays on your device unless you choose to export or share it. No account, ads, or subscription. An optional one-time Lifetime Pro purchase unlocks the complete workflow.
PipeGrade is a field calculation and documentation aid, not an approval, certification, or substitute for local codes. Verify final work using calibrated equipment and the methods required by your authority and project documents.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://pipe-grade-privacy-policy.164354133.workers.dev/

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| PipeGrade Pro Lifetime | $12.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-08-21

No release notes.

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All apps by Linfeng He: https://appshunter.io/developer/1209834914

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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 2026-08-22.*