F Numbers vs lavnet
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.
lavnet
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Password protect your account Easily create your new equipments in the application Configure different account settings such as language or connection method to your equipments Quick access to the different configuration parameters See what your equipment is doing in real time Get statistical data from the equipment: consumption, washing cycles, alarms...
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Verdict
The clearest difference is update cadence: lavnet at monthly against F Numbers's every 13 months. F Numbers's advantage is iOS requirement (13.0 vs 15.0). 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, lavnet monthly. The most recent releases landed on September 15, 2026 and October 19, 2026 respectively.
| Parameter | F Numbers | lavnet |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 13 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 15 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | ASMEIX CORPORATION | DOSIPER |
In-app purchases
F Numbers
No in-app purchases
lavnet
No in-app purchases
