PJFFfree vs PVC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PJFFfree
This app serves as a manual for piping parts, focusing on Japanese specifications. It lists commonly used items based on manufacturer data and public dimension tables, with all measurements in millimeters.
- Piping parts manual
- Japanese specifications
- Commonly used parts listing
- Manufacturer data integration
- Millimeter measurements
- JIS standards compliance
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It is a manual of piping parts. Only Japanese specification. We are listed at the discretion of the things that seems to be in common use based on manufacturer's data and the dimension tables of dealers that are open to the public. Length units are in millimeters unless otherwise specified in decimal notation JIS standards compliance
PVC
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PVC 4DAT is field-first planning and inventory for PVC pipe projects. Punch in what a project requires, and PVC 4DAT shows the inventory gaps — the pipe, fittings, and consumables you still need to buy — then helps you order them in a tap. PLAN THE JOB • Build a plan from the pipe and fitting requirements your project needs • Start from preset plan templates, or build your own custom templates (Pro) • Cold-water layouts; sizing by diameter and schedule TRACK WHAT YOU HAVE • Track pipe segments and fitting stock by type and diameter • Add inventory by hand, by CSV, or straight from a photo (Pro) • See totals by category at a glance CLOSE THE GAPS • PVC 4DAT subtracts what you have from what a project needs • The shopping list shows exactly what to buy, in pieces and lengths • Reserve stock to a project so two jobs never double-count the same parts • Export the shopping list as a print-ready PDF (Pro) ORDER THE MISSING PARTS • Each part can open a tagged Amazon search built from its type, diameter, and schedule (Pro) • No prices, ratings, or images in-app — just a clean search link • Confirm size, schedule, and fitment on the listing before ordering PRIVATE BY DESIGN • All data stays on your device; no account, no analytics, no tracking PVC 4DAT is free to start: 2 projects, 25 inventory items, and the preset plans. PVC 4DAT Pro ($8.99/year) unlocks unlimited projects and inventory, custom plan templates, PDF export, photo inventory scan, and Amazon shopping links. As an Amazon Associate, 4DAT earns from qualifying purchases made through links in the app. PVC 4DAT does not display Amazon prices, ratings, or reviews. Sizing and bill-of-materials outputs are planning aids, not engineering or code advice; none of the templates are for hot water. Terms of Use: https://pvc4dat.com/terms Privacy Policy: https://pvc4dat.com/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: PJFFfree at none against PVC's 1. PJFFfree also leads on iOS requirement (15.0 vs 18.0). PVC's advantage is ads (none vs shown). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. PVC sells 1 in-app purchase, starting at $8.99 per year. PJFFfree asks for nothing beyond the download.
| Parameter | PJFFfree | PVC |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 weeks | — |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 7 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | sigeyosi kanenishi | 4DAT LLC |
In-app purchases
PJFFfree
No in-app purchases
PVC
- PVC 4DAT Pro$8.991 Year
