P Numbers vs SSAB WeldCalc
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.
SSAB WeldCalc
This tool quickly calculates welding parameters like preheat temperatures, heat input, and machine settings. It also provides a risk analysis and allows users to save and share results as PDFs.
- Welding parameter calculation
- Preheat and interpass temperature recommendations
- Heat input calculation
- Welding machine setting recommendations
- Risk analysis
- Save and share results as PDF
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The SSAB WeldCalc app is a simplified version of the advanced SSAB WeldCalc desktop pro version. Based on the welding method, the welding joint, steel grades and thicknesses, it gives you the result in seconds: - Recommended preheat and interpass temperatures. - Recommended minimum and maximum heat input. - Recommended welding machine settings (amps, volts and travel speed). - Risk analysis. You can save the results on your device and share them as PDF. WeldClac is available in English, Turkish, Portugal, Hungary, Germany, Netherlands, Spain, France, Finland, Italy, Korea, Russia, Swedish, Chinese, Japanese, Czech, Poland, indonesian and Thai Contact details marketing@ssab.com
Screenshots
Verdict
The clearest difference is review sentiment: P Numbers at 100% against SSAB WeldCalc's 0%. P Numbers also leads on rating (4.8 vs 4.2) and ads (none vs shown). SSAB WeldCalc's advantage is update cadence (every 9 months vs every 39 months) and iOS requirement (10.0 vs 13.0). 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.
P Numbers holds the better App Store score, 4.8 against 4.2. Both are backed by a comparable volume of ratings — 5 and 5 respectively. Written reviews point the same way: 100% of P Numbers's written reviews are positive against 0% of SSAB WeldCalc's.
P Numbers ships an update every 39 months, SSAB WeldCalc every 9 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | P Numbers | SSAB WeldCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | 4.2 (5 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 5 | 5 |
| Update frequency | Every 39 months | Every 9 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 127 MB |
| Age rating | 4+ | 4+ |
| Developer | ASMEIX CORPORATION | SSAB AB |
Customer experience
P Numbers
SSAB WeldCalc
In-app purchases
P Numbers
No in-app purchases
SSAB WeldCalc
No in-app purchases
Questions
Is P Numbers free?
Is SSAB WeldCalc free?
Which has better reviews, P Numbers or SSAB WeldCalc?
Do P Numbers or SSAB WeldCalc have ads?
Which is updated more often, P Numbers or SSAB WeldCalc?
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