F Numbers vs Zeus Link
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
F Numbers
Quickly find filler metal groupings for welding procedures and performance qualifications. Access classifications with descriptions of intended use, based on ASME and AWS standards.
- Filler metal grouping lookup
- Welding procedure qualification
- Performance qualification data
- Classification descriptions
- ASME Section IX data
- AWS standards data
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F Numbers: Quick lookup of filler metal groupings for welding procedure and performance qualification. Lookup includes classifications with respective descriptions of intended use. Data is provided by C-spec. F-numbers and A-numbers assignments are based on ASME Section IX Table QW-432 and QW-442, ASME Section II Part C, AWS B2.1 Table B1 and B2, and AWS A5.1 through AWS A5.36.
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 update cadence: Zeus Link at every 6 months against F Numbers's every 13 months. Zeus Link also leads on 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.
F Numbers ships an update every 13 months, Zeus Link every 6 months. The most recent releases landed on September 15, 2026 and October 19, 2026 respectively.
| Parameter | F Numbers | Zeus Link |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 13 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 | 15 MB | 95 MB |
| Age rating | 4+ | 4+ |
| Developer | ASMEIX CORPORATION | Holley Performance Products |
In-app purchases
F Numbers
No in-app purchases
Zeus Link
No in-app purchases
Questions
Is F Numbers free?
Is Zeus Link free?
Do F Numbers or Zeus Link have ads?
Which is updated more often, F Numbers or Zeus Link?
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