Comparison

Units Converter for Engineers vs Engineering Converter

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

Head to head
About

Units Converter for Engineers

This tool allows professionals and students to convert units and currencies using dimensional analysis. It supports a vast number of unit combinations and includes physical constants. Currency rates are updated monthly.

Highlights
  • Free-form unit conversion via dimensional analysis
  • Supports over 300 single units
  • Supports over 165 currencies with automatic updates
  • Includes dozens of physical constants
  • Identifies unit mismatches
  • Glossary of available units
Features
Read full description

Units Converter is a free-form units conversion tool designed for professionals and students of science and engineering. This is the only Units and Currency conversion app you will ever need. It is based on fundamental principle of dimensional analysis which allows you to enter your unit in any form (instead of picking from a predefined list). This method therefore supports any number of combinations. For example: It can effortlessly convert Energy in ton-TNT (tTNT) to kg-km^2/hr^2. If there is a units mismatch, it will identify missing units. Plus dozens of physical constants such as speed of sound, speed of light, gravitation constant, etc. are built-in and can be retrieved by entering their symbol. Supports over 300 single units and over 165 currencies. Currency rates are automatically updated about once a month. Includes prices of gold (XAU), silver (XAG), platinum (XPT), etc. Help notes provide a detailed glossary of all units available. In free version, first text field is locked to a value of 1 and cannot be edited. Purchase 'Unlock all features' on the App Store to enable editing. Check it out.

About

Engineering Converter

Features
Read full description

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

Screenshots

Units Converter for Engineers4 screens
Engineering Converter1 screens

Verdict

The call

The clearest difference is in-app purchases: Engineering Converter at none against Units Converter for Engineers's 2. Engineering Converter also leads on device support (3 vs 1). Units Converter for Engineers's advantage is ads (none vs shown) and update cadence (every 5 weeks vs every 42 months). On price 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. Units Converter for Engineers sells 2 one-off in-app purchases. Engineering Converter asks for nothing beyond the download.

UpkeepUpdate frequency

Units Converter for Engineers ships an update every 5 weeks, Engineering Converter every 42 months. The most recent releases landed on September 19, 2026 and October 16, 2026 respectively.

Scorecard4 real differences · 6 level
Units Converter for Engineers versus Engineering Converter: the parameters behind the verdict, then further details
ParameterUnits Converter for EngineersEngineering Converter
PriceFreeFree
Rating3.0 (2 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 5 weeks — betterEvery 42 months
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.615.0 — better
Further details — not scored
Size5 MB6 MB
Age rating4+4+
DeveloperLucy EnterprisesBrook Wallace

In-app purchases

2 purchases

Units Converter for Engineers

One-time2
  • Unlock all features$0.99
  • Remove ads$1.99
None

Engineering Converter

No in-app purchases

Questions

Is Units Converter for Engineers free?
Units Converter for Engineers is free to download, with in-app purchases available.
Is Engineering Converter free?
Engineering Converter is free to download, with no in-app purchases.
Do Units Converter for Engineers or Engineering Converter have ads?
Engineering Converter shows ads; Units Converter for Engineers does not.
Which is updated more often, Units Converter for Engineers or Engineering Converter?
Units Converter for Engineers ships an update every 5 weeks, and Engineering Converter every 42 months. Most recently, Units Converter for Engineers was updated on September 19, 2026 and Engineering Converter on October 16, 2026.

Other comparisons