Comparison

Calc 2M vs M2 Calculator

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

Head to head
About

Calc 2M

This advanced calculator app offers a clean interface with both standard and pro features. It includes a history of calculations, drag-and-drop functionality, customizable themes, and the ability to export results. Ideal for students, engineers, and scientists needing precise calculations on the go.

Highlights
  • Calculation history
  • Drag and drop input
  • Customizable themes
  • Export calculations
  • Widget for quick access
  • Editable expressions
  • Advanced functions
Features
Read full description

With over half a million users Calc 2M is the best calculator on the App Store! Calc 2M combines in a simple and beautiful design all the standard and pro features of a calculator! We put particular attention on user experience trying to create the best possible calculator for iPad, iPhone and Apple Watch! Features: • History: All the expressions you make will be saved in your history, you can reuse them whenever you want. • Drag&Drop: Drag your previously typed calculations on the display for an easier and faster entry. • Themes: Change theme to fit your style. A lot of skin options (Dark, Light, Ninja, Sunrise, Dev, Vintage) • Export: Print or send your calculations as you like. You can use any third-part applications that you have installed • Widget: Need a quick calculation? Install the widget. • Readability: Coloured syntax to improve expression readability. • Functions: The powerful advanced functions make it ideal also for students, engineers and scientists. • Editable expressions: Expression completely editable, use the cursor to move within the expression, copy and paste. • Settings: Set Calc 2M according to your needs. We are continually working on Calc 2M to bring you the best product possible! Feedback are very welcome. They help us to improve Calc 2M!

About

M2 Calculator

Calculate the number of M2 Processors needed for LED video screens based on tile type, frame rate, and color depth. This tool helps determine the total tiles and ports required for a given setup, updated for the SX40 Processor.

Highlights
  • Calculate M2 Processor requirements
  • Select LED tile types
  • Set frame rate and color depth
  • Determine tiles per port
  • Calculate total tiles
  • Supports SX40 Processor
Features
Read full description

The M2 Processor (by Brompton*) is used on Large LED video screen, it takes in a variety of inputs and has 4 output ports that can drive up to a maximum of 500,000 pixels per port, but there are some conditions. Frame Rate, Colour Depth and how many pixels each connected tile has can impact the number of tiles you can drive per Port. By selecting the type of LED tile in the wall (Currently CT only has the Roe MC7HB, Black OnyX 3.47, Black OnyX 2.8 and the Carbon 4 LED tile with the Brompton Receiver Cards installed) and selecting a frame rate, and colour depth you can see how many tiles you can connect to each port and total tiles to the Processor. This application has now been updated for the SX40 Processor. I wrote this application for the Techs and PM's I work with so that they can see for simple LED screens how many M2 Processors they need on the show for a given frame rate and colour depth. * this program was not written by Brompton, and they do not provide technical support for this program.

Screenshots

Calc 2M4 screens
M2 Calculator3 screens

Verdict

The call

The clearest difference is in-app purchases: M2 Calculator at none against Calc 2M's 7. Calc 2M's advantage is update cadence (monthly vs every 7 months) and ratings volume (27 vs 4). On price, rating, 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. Calc 2M sells 7 one-off in-app purchases. M2 Calculator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Calc 2M against 5.0 for M2 Calculator. That said, the two scores are not equally well evidenced: Calc 2M has 27 ratings behind it against 4, so its average is the more settled of the two.

UpkeepUpdate frequency

Calc 2M ships an update monthly, M2 Calculator every 7 months. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 6 level
Calc 2M versus M2 Calculator: the parameters behind the verdict, then further details
ParameterCalc 2MM2 Calculator
PriceFreeFree
Rating4.9 (27 ratings)5.0 (4 ratings) — better
Positive reviews81.0% of reviews—
Number of ratings27 — better4
Update frequencyMonthly — betterEvery 7 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS9.09.0
Further details — not scored
Size48 MB4 MB
Age rating4+4+
DeveloperinkOfPixel srlDarren Alexander

Customer experience

Calc 2M

All ratings27 ratings
Positive96.3%
Neutral3.7%
Negative0.0%
Written reviews100 reviews
Positive81.0%
Neutral8.0%
Negative11.0%

M2 Calculator

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Calc 2M

Reported bugs

9 issues
  • App crashes on startup
  • Trigonometric functions produce incorrect results
  • Combination function (comb) returns wrong values
  • Sin and Tan functions malfunction
  • Swiping causes unintended function entry
Show 4 more
  • Error state requires complete restart
  • iPad version is laggy and unresponsive
  • Spelling error in function names (trigonometry misspelled)
  • App doesn't open on some devices

Requested features

10 requests
  • Automatic bracket completion
  • Fraction to decimal converter and vice versa
  • Apple Watch app support
  • More font options and customizable font sizes
  • RPN (Reverse Polish Notation) mode
Show 5 more
  • Dedicated Clear/CE button in prominent location
  • Easier negative number input
  • Algebraic functions
  • Graph plotting capabilities
  • Ability to disable advanced options for basic calculator view

M2 Calculator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Calc 2M

One-time7
  • Ninja Theme$0.99
  • Sunrise Theme$0.99
  • Dev Theme$0.99
Show 4 more
  • Vintage Theme$0.99
  • Light theme$0.99
  • Clarity Theme$0.99
  • Theme Pack$1.99
None

M2 Calculator

No in-app purchases

Questions

Is Calc 2M free?
Calc 2M is free to download, with in-app purchases available.
Is M2 Calculator free?
M2 Calculator is free to download, with no in-app purchases.
Which has better reviews, Calc 2M or M2 Calculator?
M2 Calculator is rated higher. Calc 2M averages 4.9 out of 5 from 27 ratings, while M2 Calculator averages 5.0 from 4 ratings.
Do Calc 2M or M2 Calculator have ads?
Neither Calc 2M nor M2 Calculator shows ads.
Which is updated more often, Calc 2M or M2 Calculator?
Calc 2M ships an update monthly, and M2 Calculator every 7 months. Most recently, Calc 2M was updated on October 14, 2026 and M2 Calculator on October 10, 2026.

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