Pipe Source vs PJFFfree
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pipe Source
Access comprehensive steel pipe specifications and industry conversion calculators. Easily find pipe charts for various sizes and schedules, and quickly convert units like feet to tons and $/ft to $/ton. Connect with industry experts for immediate assistance.
- Imperial and metric pipe charts
- Wall thickness and weight per foot data
- Oil Country and Tubular product information
- Industry conversion calculators
- Contact industry experts
- Branch locator
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Pipe Source brought to you by Kelly Pipe is a convenient resource for common steel pipe specifications as well as useful industry conversion calculators! This application includes imperial and metric pipe charts displaying wall thickness and weight per foot for Pipe sizes 1/8” – 52” and Schedules 5- Double Extra Heavy. Similar information is also provided for commonly stocked Oil Country and Tubular products including API drift and Coupling OD for well casing and tubing. Multiple built-in industry related calculators make it easy to convert feet to tons and $/ft to $/ton. The Pipe Source enables users to readily contact industry experts at a nearby Kelly Pipe branch to get immediate answers to their questions. With over 100 years in the business, an expert knowledgeable staff, Kelly Pipe is the Ultimate Source for Carbon Steel Pipe and Oil Country Tubular Goods!
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
Screenshots
Verdict
The clearest difference is rating: PJFFfree at 5.0 against Pipe Source's 4.0. PJFFfree also leads on update cadence (every 5 weeks vs every 4 months). Pipe Source's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
PJFFfree holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Pipe Source ships an update every 4 months, PJFFfree every 5 weeks. The most recent releases landed on October 2, 2026 and October 8, 2026 respectively.
| Parameter | Pipe Source | PJFFfree |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 4 months | Every 5 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 7.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 12 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Kelly Pipe Co. LLC | sigeyosi kanenishi |
Customer experience
Pipe Source
PJFFfree
In-app purchases
Pipe Source
No in-app purchases
PJFFfree
No in-app purchases
Questions
Is Pipe Source free?
Is PJFFfree free?
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