calcISO5817 vs Material Numbers
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
calcISO5817
This application helps welding professionals determine weld quality based on ISO 5817 standards. Input weld geometry and select imperfections to assess if a weld meets quality requirements.
- ISO 5817 quality level calculation
- Weld geometry input
- Imperfection selection
- Weld OK/Not OK status
- Comparison with measurements
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This App is for welding engineers, technicians and experts. You found the quality levels for imperfections for welds in the ISO 5817. This App calculated the value for one concretely weld. Select the weld, then input the geometry of the weld, then select the imperfections. The result for this weld is displayed. You can now the result compared with the measurement. The weld is OK or not.
Material Numbers
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M Numbers: Quick lookup of base metal weldability grouping numbers (Material 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 AWS B2.1 Table C.1 and C.2.
Screenshots
Verdict
The clearest difference is price: Material Numbers at Free against calcISO5817's $2.99. Material Numbers also leads on update cadence (every 2 days vs every 12 months) and device support (3 vs 1). On ads and in-app purchases 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
Material Numbers is free to download; calcISO5817 costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
calcISO5817 ships an update every 12 months, Material Numbers every 2 days. Both last shipped on October 14, 2026.
| Parameter | calcISO5817 | Material Numbers |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 12 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Georg Rose | ASMEIX CORPORATION |
In-app purchases
calcISO5817
No in-app purchases
Material Numbers
No in-app purchases
Questions
Is calcISO5817 free?
Is Material Numbers free?
Do calcISO5817 or Material Numbers have ads?
Which is updated more often, calcISO5817 or Material Numbers?
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