---
title: "Jean-Paul Lanaux — Publisher Overview"
type: publisher
publisher: "Jean-Paul Lanaux"
publisher_slug: "jean-paul-lanaux"
canonical_url: "https://marlvel.ai/publishers/jean-paul-lanaux"
last_updated: 2026-04-24T09:07:52.672Z
source: Marlvel.ai
license: CC-BY-NC-4.0
citation: "Marlvel.ai — Jean-Paul Lanaux Publisher Overview"
---
# Jean-Paul Lanaux — Publisher Overview

> Providing specialized calculation and layout tools for piping professionals and industrial fabricators.

- **Publisher:** Jean-Paul Lanaux
- **Website:** [https://jplanaux.com](https://jplanaux.com)
- **Overview generated:** 2026-04-24
- **License:** CC-BY-NC 4.0

## Executive summary

Jean-Paul Lanaux occupies a highly specific technical niche, providing digital replacements for traditional manual layout calculations and reference books in the piping industry. The portfolio's primary moat is its offline utility for field-based fabrication, where CAD software or internet access is often unavailable. However, the publisher has transitioned into a legacy state, with no active development or updates observed across the suite for several years.

## Publisher DNA

- **Primary focus:** Technical utilities for piping fabrication and engineering
- **Scale:** indie
- **Target audience:** Professional pipefitters, welders, draftsmen, and construction personnel requiring field-ready layout dimensions.

## Portfolio momentum

- **Velocity:** zombie
- **Active apps:** 0
- **Abandoned apps:** 4

The portfolio is currently stagnant with 0 releases in the last 6 months and all 4 apps classified as abandoned, having not been updated since early 2021.

## Aggregated portfolio metrics

- **Total reviews (all apps):** 32
- **Weighted rating:** 3.69 / 5
- **Apps in portfolio:** 4

## Category breakdown

| Category | Apps | Share |
| :--- | :--- | :--- |
| Utilities | 2 | 50% |
| Productivity | 1 | 25% |
| Reference | 1 | 25% |

## Top apps

- **Piping Offset Calculator** — Portfolio flagship and most reviewed title (14 reviews) providing graphical offset selection.
- **Piping Abacus** — Digital reference tool designed to function as a mobile 'Blue Book' for piping data.
- **Pipe Saddle Layout Calculator** — Specialized productivity tool for generating cylinder-to-cylinder intersection dimensions.

## Signature patterns

- Strict focus on industrial piping and fabrication utilities
- Monetization via a 100% paid upfront model across all titles
- Emphasis on offline functionality for field and construction site use
- Utility-first interface designed to replace manual reference books and CAD software

## Bottom line

Jean-Paul Lanaux is a legacy indie publisher that successfully digitized niche industrial workflows for the piping sector. While the products serve a clear professional need, the lack of updates since 2021 suggests the portfolio is no longer being actively maintained or expanded.

---
© 2026 Marlvel.ai | [Publisher apps index](https://marlvel.ai/api/llm/publishers/jean-paul-lanaux) | [Methodology](https://marlvel.ai/api/llm/methodology)
Data licensed under CC-BY-NC 4.0.

---
© 2026 Marlvel.ai | [Full publisher profile](https://marlvel.ai/publishers/jean-paul-lanaux) | [Publisher apps index](https://marlvel.ai/api/llm/publishers/jean-paul-lanaux) | [Methodology](https://marlvel.ai/api/llm/methodology)
Data licensed under CC-BY-NC 4.0.