Comparison

Unit Converter For Engineers vs ConvertxChange

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

Head to head
About

Unit Converter For Engineers

This app provides a comprehensive unit conversion tool specifically designed for engineers, offering specialized units not found in standard converters. It features offline functionality, fast search, and a clean interface, replacing the need for multiple reference materials.

Highlights
  • Specialized engineering units
  • Offline functionality
  • Fast search and instant conversion
  • Fraction input mode
  • Ad-free interface
  • Scientific notation support
Features
Read full description

Built for engineers who work with units most converters don’t have. No ads. No popups. No distractions. If you’ve ever opened PDFs, charts, or old handbooks to convert Rockwell hardness, wire gauge, HVAC airflow, radiation dose, water hardness, or torque units — this app replaces all of that. Units you usually can’t find in converter apps Material Hardness Rockwell (HRC, HRB, HRA), Vickers, Brinell, Knoop, Mohs, Shore Wire Gauge AWG, SWG, MCM, kcmil, diameter, cross-sectional area HVAC & Airflow CFM, ACH, BTU/h, tons of cooling, kW, airflow per area and per person Water Quality & Chemistry ppm, mg/L as CaCO₃, grains per gallon (US/UK), °dH, °fH, dKH, mmol/L, meq/L Radiation & Radioactivity Becquerel, Curie, Gray, rad Mechanical & Structural Torque, stress, density, pressure, moment of inertia (kg·m² ↔ slug·ft²) Built for real work environments • Works 100% offline in labs, plants, and job sites • Fast search and instant conversion • Scientific notation for precision work • Fraction input mode for field and construction use • Clean, engineer-friendly interface — no ads, ever This app replaces reference charts, calculators, handbooks, and repeated Google searches with one reliable tool in your pocket. Pricing 7-Day Free Trial $9.99/year full access $29.99 lifetime access Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://unitconvertx.github.io/docs/privacy.html

About

ConvertxChange

Features
Read full description

Convert everyday values effortlessly with a simple, elegant app designed for speed and clarity. Whether you’re switching between distance units, converting temperatures, or exploring live currency exchange rates, everything updates instantly as you type. Perfect for travelers, students, professionals, and anyone who needs quick conversions.

Screenshots

Unit Converter For Engineers4 screens
ConvertxChange4 screens

Verdict

The call

The clearest difference is in-app purchases: ConvertxChange at none against Unit Converter For Engineers's 2. Unit Converter For Engineers's advantage is iOS requirement (16.2 vs 26.0). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Unit Converter For Engineers sells 2 in-app purchases, starting at $9.99 per year. ConvertxChange asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Unit Converter For Engineers versus ConvertxChange: the parameters behind the verdict, then further details
ParameterUnit Converter For EngineersConvertxChange
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 9 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.2 — better26.0
Further details — not scored
Size5 MB1 MB
Age rating17+4+
DeveloperAmanuel AbebawSiva Sivakumar

In-app purchases

2 purchases

Unit Converter For Engineers

Subscriptions1
  • Annual Subscription7 Days trial$9.991 Year
One-time1
  • Lifetime Access$29.99
None

ConvertxChange

No in-app purchases

Questions

Is Unit Converter For Engineers free?
Unit Converter For Engineers is free to download, with in-app purchases available.
Is ConvertxChange free?
ConvertxChange is free to download, with no in-app purchases.
Do Unit Converter For Engineers or ConvertxChange have ads?
Neither Unit Converter For Engineers nor ConvertxChange shows ads.

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