Comparison

Engineering Converter vs Material Numbers

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Engineering Converter

Features
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This engineering converter provides basic conversions between units of measure for common and engineering units. This app has the capability to convert units for the following types of measurement: Temperature Length Mass Mole Area Volume Time Velocity Acceleration Density Molar Density Molar Volume Force Pressure Energy Power Mass Flow Mole Flow Volume Flow Heat Capacity Molar Heat Capacity Latent Heat Molar Latent Heat Conductivity Viscosity Diffusivity Surface Tension

About

Material Numbers

Features
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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

Engineering Converter1 screens
Material Numbers4 screens

Verdict

The call

The clearest difference is ads: Material Numbers at none against Engineering Converter's shown. Material Numbers also leads on update cadence (every 2 days vs every 42 months) and iOS requirement (13.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Engineering Converter ships an update every 42 months, Material Numbers every 2 days. The most recent releases landed on September 12, 2026 and September 26, 2026 respectively.

Scorecard3 real differences ยท 3 level
Engineering Converter versus Material Numbers: the parameters behind the verdict, then further details
ParameterEngineering ConverterMaterial Numbers
PriceFreeFree
Update frequencyEvery 42 monthsEvery 2 days โ€” better
AdsYesNo โ€” better
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 โ€” better
Further details โ€” not scored
Size6 MB14 MB
Age rating4+4+
DeveloperBrook WallaceASMEIX CORPORATION

In-app purchases

None

Engineering Converter

No in-app purchases

None

Material Numbers

No in-app purchases

Questions

Is Engineering Converter free?
Engineering Converter is free to download, with no in-app purchases.
Is Material Numbers free?
Material Numbers is free to download, with no in-app purchases.
Do Engineering Converter or Material Numbers have ads?
Engineering Converter shows ads; Material Numbers does not.
Which is updated more often, Engineering Converter or Material Numbers?
Engineering Converter ships an update every 42 months, and Material Numbers every 2 days. Most recently, Engineering Converter was updated on September 12, 2026 and Material Numbers on September 26, 2026.

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