# DWV Pro: Drain Waste Vent — Fixture units to pipe size

> Fixture units to pipe size (iPhone/iPad app by Donald Proctor.)

- Source: https://appshunter.io/ios/app/dwv-pro-drain-waste-vent/id6788559172 (this page in markdown: same URL + `.md`)
- Developer: [Donald Proctor](https://appshunter.io/developer/1861592032)
- Category: Productivity, Utilities
- Price: $7.99
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-08-26
- Data updated: 2026-08-27
- User reviews in markdown: https://appshunter.io/ios/app/dwv-pro-drain-waste-vent/id6788559172/reviews.md

## What is DWV Pro?

DWV Pro is the pay-once, no-login DWV sizing calculator built for working plumbers and inspectors.

Build your fixture load with a tap, and DWV Pro gives you the answers you need on the job:
- Drainage Fixture Units for every fixture (IPC Table 709.1)
- Minimum pipe size for building drains and sewers, horizontal branches, and stacks (Tables 710.1)
- Required slope and total fall for any run (Table 704.1)
- Minimum vent size by stack size, load, and developed length (Table 916.1)

It even holds a building drain serving a water closet to the 3-inch code minimum automatically.

WHY DWV PRO
- Pay once - no subscription, no login, no ads.
- 100% offline - works in the crawlspace with no signal.
- Every table cited and cross-checked against the published IPC.

DWV Pro is a professional estimating and reference tool. It is not a substitute for a licensed engineer or your authority having jurisdiction - always verify against your locally adopted code.


## Version history (last 1 release)

### 1.0 — 2026-08-26

No release notes.

## More apps by Donald Proctor

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- [Ask Donnie: Takeoff Estimator](https://appshunter.io/ios/app/ask-donnie-takeoff-estimator/id6783147205)
- [TenantTrail: Rental Evidence](https://appshunter.io/ios/app/tenanttrail-rental-evidence/id6788558719)
- [LensWright: Optician Calc](https://appshunter.io/ios/app/lenswright-optician-calc/id6790553187)

All apps by Donald Proctor: https://appshunter.io/developer/1861592032

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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 2026-08-27.*