Comparison

Length Mass Speed Converter vs E

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

Head to head
About

Length Mass Speed Converter

Easily convert between various units of measurement across 15 categories, including length, mass, volume, speed, and temperature. Offers a premium subscription for advanced features and an ad-free experience.

Highlights
  • Distance/length conversions
  • Area conversions
  • Volume conversions
  • Mass conversions
  • Speed conversions
  • Temperature conversions
  • 15 measurement categories
Features
Read full description

A measurements converter including these units conversions : - Distance/length (mm Millimeters, cm Centimeters, m Meters, km Kilometers, in Inches, ft Feet, yd Yards, mi Miles) - Area (mm^2 Millimeter Square, cm^2 Centimeter Square, m^2 Meter Square, in^2 Inch Square,ft^2 Foot Square, yd^2 Yard Square) - Volume (cm^3 Centimeter cube, m^3 Meter cube, ltr Liter, in^3 Inch cube, ft^3 Foot cube, US gal US gallons, Imp.gal Imperial gallons, US brl US barrel oil) - Mass (g Grams, kg Kilograms, tonne Metric tonnes, shton Short ton, Lton Long ton, lb Pounds, oz Ounces) - Density (g/ml Gram Per milliliter, kg/m^3 Kilogram Per meter cube, lb/ft^3 Pound Per foot cube, lb/in^3 Pound Per inch cube) - Volumetric Liquid Flow Units (L/sec Liter Per second, L/min Liter Per minute, M^3/hr Meter cube Per hour, ft^3/min Foot cube Per minute, ft^3/hr Foot cube Per hour, gal/min US gallons Per minute, US brl/d US barrels oil Per day) - Volumetric Gas Flow Units (Nm^3/hr Normal meter cube Per hr, scfh Standard cubic ft Per hr, scfm Standard cubic ft Per min) - Mass Flow (kg/h Kilogram Per hour, lb/hour Pound Per hour, kg/s Kilogram Per second, t/h Ton Per hour) - High Pressure (bar Bar, psi Pound Per square inch, kPa Kilopascal, MPa Megapascal, kgf/cm^2 KG force Per CM square, mm Hg Millimeter of mercury, atm Atmospheres) - Low Pressure Units (mH 2O Meter of water, ftH 2O Foot of water, cmHg Centimeter of mercury, inHg Inches of mercury, inH 2O Inches of water, Pa Pascal) - Speed (m/s Meter Per second, m/min Meter Per minute, km/h Kilometer Per hour, ft/s Foot Per second, ft/min Foot Per minute, mi/h Miles Per hour) - Torque (Nm Newton meter, kgfm Kilogram force meter, ftlb Foot pound, inlb Inch pound) - Dynamic Viscosity (cp Centipoise, poise Poise, lb/(ft·s) Pound Per foot·second) - Kinematic Viscosity (cs Centistoke, St Stoke, ft^2/s Foot square Per second, m^2/s meter square Per second) - Temperature (Degree Celsius, Degree Fahrenheit, Kelvin) Converter Premium is a monthly recurring subscription. You will automatically be billed the amount (US$14.99) through the App Store at the end of the free trial period which is 7 days. The monthly subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. Any unused portion of the free trial period will be forfeited. You can manage your subscription in the App Store. Terms of use: https://ar-code.co/apps/converter/terms.html Privacy policy: https://ar-code.co/apps/converter/privacy.html

About

E

Features
Read full description

E-Bill 4.0 is an innovative application designed to facilitate the digital signing of internal invoices, FOC bills and ENT bills. This application focuses on simplifying internal processes by providing a convenient and efficient way for users to sign invoices electronically on their digital devices. E-Bill 4.0 eliminates the need for physical signatures and paperwork, streamlining the workflow and reducing administrative overhead.

Screenshots

Length Mass Speed Converter3 screens
E4 screens

Verdict

The call

The clearest difference is in-app purchases: E at none against Length Mass Speed Converter's 1. E also leads on ads (none vs shown) and update cadence (every 8 days vs every 4 months). Length Mass Speed Converter's advantage is iOS requirement (12.0 vs 16.0). On price 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. Length Mass Speed Converter sells 1 in-app purchase, starting at $14.99 per month. E asks for nothing beyond the download.

UpkeepUpdate frequency

Length Mass Speed Converter ships an update every 4 months, E every 8 days. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
Length Mass Speed Converter versus E: the parameters behind the verdict, then further details
ParameterLength Mass Speed ConverterE
PriceFreeFree
Rating4.6 (14 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings14 — better—
Update frequencyEvery 4 monthsEvery 8 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size7 MB30 MB
Age rating4+4+
DeveloperAR Code Pte. Ltd.NGUYEN THI PHUONG

In-app purchases

1 purchases

Length Mass Speed Converter

Subscriptions1
  • Converter Premium7 Days trial$14.991 Month
None

E

No in-app purchases

Questions

Is Length Mass Speed Converter free?
Length Mass Speed Converter is free to download, with in-app purchases available.
Is E free?
E is free to download, with no in-app purchases.
Do Length Mass Speed Converter or E have ads?
Length Mass Speed Converter shows ads; E does not.
Which is updated more often, Length Mass Speed Converter or E?
Length Mass Speed Converter ships an update every 4 months, and E every 8 days. Most recently, Length Mass Speed Converter was updated on October 24, 2026 and E on October 30, 2026.

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