Comparison

PJFFfree vs steelyard

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Piping parts manual
  • Japanese specifications
  • Commonly used parts listing
  • Manufacturer data integration
  • Millimeter measurements
  • JIS standards compliance
Features
Read full description

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

About

steelyard

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
Read full description

Steelyard: The Ultimate Metal Mass & Cost Calculator Precision matters. Whether you’re a structural engineer, a metal fabricator, or a scrap dealer, Steelyard turns your smartphone into a heavy-duty industrial scale. Stop guessing and start calculating with the most intuitive interface on the market. iron, aluminum, copper, brass, density, structural, engineer, fabrication, rebar, tube, kg, lbs, construction, gauge, volume, materials, h-beam, u-beam From standard sheets to complex industrial sections, Steelyard handles: Structural Beams: I-Beam, H-Beam, U-Channel, and T-Bars. Tubes & Pipes: Round, square, and rectangular hollow sections. Rods & Bars: Hexagonal, round, and flat bars. Custom Profiles: Input your own dimensions for specialized sections. Massive Material Database: metals including Steel, Aluminum, Copper, Brass, Titanium, and Lead. Live Price Estimator: Input the price per unit to get instant total project costs. Dual Unit Support: Seamlessly toggle between Metric (kg, mm, m) and Imperial (lbs, in, ft). History Log: Save your previous calculations for quick reference later. Offline Mode: Works in the workshop or on-site without an internet connection. "Steelyard is built for the floor, not just the office. Big buttons, high-contrast text, and zero fluff."

Screenshots

PJFFfree4 screens
steelyard4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
PJFFfree versus steelyard: the parameters behind the verdict, then further details
ParameterPJFFfreesteelyard
PriceFreeFree
Rating5.0 (1 ratings) — better4.7 (297 ratings)
Positive reviews100.0% of reviews — better55.6% of reviews
Number of ratings1297 — better
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better16.6
Further details — not scored
Size7 MB7 MB
Age rating4+4+
Developersigeyosi kanenishiMohamed Saad

Customer experience

PJFFfree

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

steelyard

All ratings283 ratings
Positive94.0%
Neutral2.5%
Negative3.5%
Written reviews9 reviews
Positive55.6%
Neutral0.0%
Negative44.4%

In-app purchases

None

PJFFfree

No in-app purchases

1 purchases

steelyard

One-time1
  • Ad Blocker$9.99

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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