Comparison

Volume Units Converter vs Matrix Calc Plus

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

Head to head
About

Volume Units Converter

Easily convert volume measurements between 18 different units. Simply input your value and select the desired units for instant conversion. Supports a wide range of common and specialized volume measurements.

Highlights
  • Converts between 18 volume units
  • Supports cubic meters, liters, gallons, and more
  • Intuitive input and unit selection
  • Displays converted values instantly
  • Covers UK and US liquid/dry measurements
Features
Read full description

The Volume Units Converter application converts the input volume value into 18 units. The unit to be converted is cubic meters [m ^ 3], liter [L], gallon [gal], and so on. Simply entering the volume value and selecting the unit of volume with the unit selection button, the value converted into 18 units is displayed. Units supported by this application are as follows. 【Unit of volume】 cubic meters [m ^ 3], liter [L], cc [cc], cubic yards [yd ^ 3], cubic feet [ft ^ 3], cubic inches [in ^ 3], UK and US bushel [bushel (UK), bu(US)], UK and US gallons [gal (UK), gal (US)], Ounces for liquids in the UK and the US [fl oz (UK), fl oz (US)], British pint [pt (UK)], US grain pint[dry pt (US)], US liquid pint [liq pt (US)], US barrel oil [bbl (US oil)], Barrel for US liquid [bbl (US liq)], US dry barrel[bbl (US dry)].

About

Matrix Calc Plus

Features
Read full description

Matrix Calculator is a math calculator designed to solve matrix operations. It allows you to perform matrix operations on two matrices, including addition, subtraction, multiplication, and division, quickly and easily. Features: • Supports matrix addition, subtraction, multiplication, and division. • Generates matrices in LaTeX format, which can be saved as images to your camera roll. • Matrices in array mode can be copied easily. • Customizable font and background colors. • Adjustable font size and type. • Option to display the full matrix operation or the result only. • Includes a matrix reference guide. • Works seamlessly on both iPhone and iPad. • Lightweight, compact app optimized for everyday use. • Ad-free and built with privacy in mind. In mathematics, a matrix (plural: matrices) is a rectangular array or table of numbers, symbols, or expressions arranged in rows and columns. It is used to represent a mathematical object or describe properties of such objects. Matrix Operations: Adding or Subtracting Two Matrices: A matrix A with 3 rows and 5 columns can be added to another matrix B of the same dimensions (3 rows and 5 columns). To perform addition or subtraction, the two matrices must have the same size, meaning the rows and columns must match. Multiplying Two Matrices: To multiply an m×n matrix by an n×p matrix, the number of columns in the first matrix (n) must equal the number of rows in the second matrix (n). The resulting matrix will have dimensions m×p: m×n×n×p=m×p Dividing Two Matrices: Matrix division is defined as: A/B = A × (1/B) = A × B⁻¹ Where B⁻¹ is the inverse of matrix B. Thank you for your support! Visit nitrio.com for more apps for your iOS devices.

Screenshots

Volume Units Converter4 screens
Matrix Calc Plus4 screens

Verdict

The call

The clearest difference is price: Volume Units Converter at $1.99 against Matrix Calc Plus's $2.99. Volume Units Converter also leads on iOS requirement (15.0 vs 18.2). On update cadence, ads, in-app purchases 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

Volume Units Converter costs $1.99 and Matrix Calc Plus $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Volume Units Converter ships an update every 32 months, Matrix Calc Plus every 26 months. The most recent releases landed on September 25, 2026 and June 9, 2026 respectively.

Scorecard2 real differences · 7 level
Volume Units Converter versus Matrix Calc Plus: the parameters behind the verdict, then further details
ParameterVolume Units ConverterMatrix Calc Plus
Price$1.99 — better$2.99
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 32 monthsEvery 26 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.2
Further details — not scored
Size1 MB9 MB
Age rating4+4+
DeveloperKei SuefujiHeng Jia Liang

In-app purchases

None

Volume Units Converter

No in-app purchases

None

Matrix Calc Plus

No in-app purchases

Questions

Is Volume Units Converter free?
Volume Units Converter costs $1.99, with no in-app purchases.
Is Matrix Calc Plus free?
Matrix Calc Plus costs $2.99, with no in-app purchases.
Do Volume Units Converter or Matrix Calc Plus have ads?
Neither Volume Units Converter nor Matrix Calc Plus shows ads.
Which is updated more often, Volume Units Converter or Matrix Calc Plus?
Volume Units Converter ships an update every 32 months, and Matrix Calc Plus every 26 months. Most recently, Volume Units Converter was updated on September 25, 2026 and Matrix Calc Plus on June 9, 2026.

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