# PJFFfree vs steelyard

The clearest difference is review sentiment: PJFFfree at 100% against steelyard's 56%. PJFFfree also leads on in-app purchases (none vs 1) and rating (5.0 vs 4.7). steelyard's advantage is ads (none vs shown) and ratings volume (297 vs 1). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. steelyard sells 1 one-off in-app purchase. PJFFfree asks for nothing beyond the download.

PJFFfree holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: steelyard has 297 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of PJFFfree's written reviews are positive against 56% of steelyard's.

PJFFfree ships an update every 5 weeks, steelyard every 2 months. The most recent releases landed on September 22, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | PJFFfree | steelyard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pjfffree/id629958775/reviews)** | [4.7 (297 ratings)](https://appshunter.io/ios/app/steelyard/id1291109620/reviews) |
| Number of ratings | 1 | **297** |
| Positive reviews | **100.0% of reviews** | 55.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 7 MB | 7 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [sigeyosi kanenishi](https://appshunter.io/developer/629958778) | [Mohamed Saad](https://appshunter.io/developer/1291109619) |

## What reviewers say

### PJFFfree

[App page](https://appshunter.io/ios/app/pjfffree/id629958775)

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.

**Highlights:** Piping parts manual, Japanese specifications, Commonly used parts listing, Manufacturer data integration, Millimeter measurements, JIS standards compliance

**Features:** macOS Compatibility

**In-app purchases:** none


### steelyard

[App page](https://appshunter.io/ios/app/steelyard/id1291109620)

This app quickly calculates the weight of steel sections from various international standards. It supports both metric and imperial units and offers offline functionality for convenience. Save your settings and calculations for easy access.

**Highlights:** Steel section weight calculation, Supports EU, USA, Japanese, KOREA standards, Metric and Imperial units, Offline functionality, Save calculations and settings, Advanced search system

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad Blocker | $9.99 | one-time |


## Frequently asked questions

### Is PJFFfree free?

PJFFfree is free to download, with no in-app purchases.

### Is steelyard free?

steelyard is free to download, with in-app purchases available.

### Which has better reviews, PJFFfree or steelyard?

PJFFfree is rated higher. PJFFfree averages 5.0 out of 5 from 1 ratings, while steelyard averages 4.7 from 297 ratings.

### Do PJFFfree or steelyard have ads?

PJFFfree shows ads; steelyard does not.

### Which is updated more often, PJFFfree or steelyard?

PJFFfree ships an update every 5 weeks, and steelyard every 2 months. Most recently, PJFFfree was updated on September 22, 2026 and steelyard on September 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*