P Numbers vs steelyard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
P Numbers
Quickly access weldability grouping numbers for welding procedures and performance qualifications. This app provides data from authoritative sources like ASME Section IX and AWS B2.1.
- Base metal weldability grouping lookup
- Welding procedure qualification data
- Performance qualification data
- ASME Section IX Table QW/QB-422 data
- AWS B2.1 Table C1 and C2 data
- ISO/TR 20173 data
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P-Numbers: Quick lookup of base metal weldability grouping numbers for welding procedure and performance qualification. Data is provided by C-spec from the master source used for generation, proof-reading and maintenance of ASME Section IX Table QW/QB-422, AWS B2.1 Table C1 and C2, and ISO/TR 20173.
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.
- Steel section weight calculation
- Supports EU, USA, Japanese, KOREA standards
- Metric and Imperial units
- Offline functionality
- Save calculations and settings
- Advanced search system
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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
Verdict
P Numbers and steelyard both sit at 4.8 stars, but that hides the real split: 100% of P Numbers's written reviews are positive against 56% of steelyard's. P Numbers also leads on in-app purchases (none vs 1) and iOS requirement (13.0 vs 16.6). steelyard's advantage is update cadence (every 2 months vs every 39 months) and ratings volume (297 vs 5). On price, rating, ads 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. steelyard sells 1 one-off in-app purchase. P Numbers asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.8 for P Numbers against 4.7 for steelyard. That said, the two scores are not equally well evidenced: steelyard has 297 ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 100% of P Numbers's written reviews are positive against 56% of steelyard's.
P Numbers ships an update every 39 months, steelyard every 2 months. The most recent releases landed on June 11, 2026 and September 19, 2026 respectively.
| Parameter | P Numbers | steelyard |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | 4.7 (297 ratings) |
| Positive reviews | 100.0% of reviews — better | 55.6% of reviews |
| Number of ratings | 5 | 297 — better |
| Update frequency | Every 39 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 13 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | ASMEIX CORPORATION | Mohamed Saad |
Customer experience
P Numbers
steelyard
In-app purchases
P Numbers
No in-app purchases
steelyard
- Ad Blocker$9.99
Questions
Is P Numbers free?
Is steelyard free?
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