P Numbers vs Zeus Link
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.
Zeus Link
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This app is used to configure Zeus-Link by choosing which gauges a customer has in the dash and how each gauge gets its signal. It features a virtual gauge screen, aligning with the dash instruments and easy diagnostics. It displays values being received by Zeus-Link™ and will allow the user to cycle gauges to predetermined positions, to verify correct outputs and wiring.
Screenshots
Verdict
The clearest difference is rating: P Numbers at 4.8 against Zeus Link's 1.0. P Numbers also leads on ratings volume (5 vs 1). Zeus Link's advantage is update cadence (every 6 months vs every 39 months) and iOS requirement (11.0 vs 13.0). On price, ads, 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 1.0. That said, the two scores are not equally well evidenced: P Numbers has 5 ratings behind it against 1, so its average is the more settled of the two.
P Numbers ships an update every 39 months, Zeus Link every 6 months. The most recent releases landed on October 19, 2026 and October 28, 2026 respectively.
| Parameter | P Numbers | Zeus Link |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | 1 |
| Update frequency | Every 39 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 95 MB |
| Age rating | 4+ | 4+ |
| Developer | ASMEIX CORPORATION | Holley Performance Products |
In-app purchases
P Numbers
No in-app purchases
Zeus Link
No in-app purchases
Questions
Is P Numbers free?
Is Zeus Link free?
Which has better reviews, P Numbers or Zeus Link?
Do P Numbers or Zeus Link have ads?
Which is updated more often, P Numbers or Zeus Link?
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