Comparison

Engineering Converter vs iUnits Converter

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

Head to head

Engineering Converter

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

iUnits Converter

Features

Read full description

iUnits Converter: a handy converter for all the used units. Hundreds of units available, dozens of dimensions. Dimensions available: Acceleration Angle Area Concentration Mass Duration Electric Charge Electric Current Electric Potential Difference Electric Resistance Energy Frequency Fuel Efficency Information Storage Length Mass Power Pressure Speed Temperature Volume

Screenshots

Engineering Converter1 screens

iUnits Converter3 screens

Verdict

The call

The clearest difference is ads: iUnits Converter at none against Engineering Converter's shown. iUnits Converter also leads on update cadence (every 6 days vs every 42 months). On price, in-app purchases, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · 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, iUnits Converter every 6 days. The most recent releases landed on September 30, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 4 level

Engineering Converter versus iUnits Converter: the parameters behind the verdict, then further details
Parameter	Engineering Converter	iUnits Converter
Price	Free	Free
Update frequency	Every 42 months	Every 6 days — better
Ads	Yes	No — better
In-app purchases	No	No
Devices	iPhone, iPad, iPod — better	iPhone, iPod
Requires iOS	15.0	14.0 — better
Further details — not scored
Size	6 MB	6 MB
Age rating	4+	4+
Developer	Brook Wallace	Alessandro Manilii

In-app purchases

None

Engineering Converter

No in-app purchases

None

iUnits Converter

No in-app purchases

Questions

Is Engineering Converter free?

Engineering Converter is free to download, with no in-app purchases.

Is iUnits Converter free?

iUnits Converter is free to download, with no in-app purchases.

Do Engineering Converter or iUnits Converter have ads?

Engineering Converter shows ads; iUnits Converter does not.

Which is updated more often, Engineering Converter or iUnits Converter?

Engineering Converter ships an update every 42 months, and iUnits Converter every 6 days. Most recently, Engineering Converter was updated on September 30, 2026 and iUnits Converter on October 8, 2026.