Comparison

Objective Calculator vs Command

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

Head to head
About

Objective Calculator

This versatile calculator app offers a unique tabbed interface for managing multiple calculations simultaneously. It includes a scientific calculator, currency converter, and drawing/annotation capabilities for notes and reminders. Optimized for modern iOS devices, it provides real-time results and advanced history features.

Highlights
  • Tabbed interface for multiple calculations
  • Scientific calculator functions
  • Drawing and annotation notes
  • Real-time problem solving
  • Currency converter with 33 currencies
  • Advanced history management
  • Color themes and dark/light mode
Features
Read full description

Regular Calculator with Tabs, Notepad, Scientific Calculator and Currency Converter! Objective Calculator was made for you! From simple calculations, like the total price of a purchase, to advanced trigonometric functions, it can handle it all! This is the only calculator app with tabs, and everyone loves it! You can calculate several different things at the same time, or break down a single problem without losing any number. You can even give a title to your tabs, so you can easily find it later. Objective Calculator is the only calculator app with the ability of taking drawing notes! Use your Apple Pencil or finger to record reminders or important informations about your calculations. The best iOS technologies are implemented in this app, like 3D Touch, Drag and Drop, Haptic Feedback, Apple Pencil support and more. Get the most out of your latest device! Features: • Real-time Problem Solving - no need for an “equals” button. Objective Calculator gives the result as you type • Tabs - innovative and useful for everyone • Drawings - Add drawings to your tabs as notes or reminders! Supports Apple Pencil! • Currency Converter - 33 currencies available • Annotations - give titles to your tabs, you can even use emojis! • Advanced History - search, reuse, edit, drag, email or delete history items • Color Themes - several beautiful color themes available • Real-time Editing - easily replace numbers, operators or functions • Normal Mode - hide all scientific buttons if you don’t use them • Complete Portrait - have access to all buttons, even on portrait mode • Multitasking - Slide Over and Split View for iPad • Drag and Drop - available for iPad and iPhone • 3D Touch - useful quick actions on supported devices • External Keyboard Support - over 30 keyboard shortcuts • Dark and Light Mode - the whole interface adjusts to your current color theme • Fast App Launch - the app launches very quickly, even on older devices • Great Performance - it responds to every interaction without annoying lags • Very easy to use • Beautiful, modern and clean interface, without advertisements

About

Command

This app offers a command-line interface for performing complex calculations, including chained operations, variable assignments, and advanced mathematical functions. It supports various number bases, constants, and provides a built-in help system for ease of use.

Highlights
  • Command-line interface
  • Chained calculations
  • Variable assignment
  • Complex numbers
  • Multiple number bases
  • Unit and function definition
  • Extensive math functions
Features
Read full description

Command-Line Calculator (CLCalculator) provides the most fluid interface, especially if you are performing chained calculations i.e. multiple calculations that rely on the results of previous calculations. By providing a command-line interface, CLCalculator allows you to easily enter and view the history of your calculations. You focus on your calculations instead of being intimidated by myriad of buttons on a traditional calculator interface! In addition to performing basic calculations, CLCalculator provides an array of features such as: - Assign and reuse variables - Complex numbers - Number bases i.e. binary, octal, hexadecimal - Constants e.g. e, pi - String manipulation - Matrices - Unit conversion: in-built and user-defined (create your own units!) - Functions: in-built and user-defined (create your own functions!) - Arithmetic functions e.g. fraction, square root, rounding off, ceiling, floor, logarithm - Algebra functions e.g. derivative, simplify symbolic expressions, solve linear equations - Bitwise functions e.g. bitwise and, not, or, left and right shift - Combinatorics functions e.g. Bell, Catalan, Stirling numbers - Geometry functions - Logical functions e.g. and, not, or, xor - Probability functions e.g. combinations, permutations, factorial - Relational functions - Set functions e.g. cartesian product, intersection, union - Statistics functions e.g. mean, median, mode, standard deviation, variance - Trigonometry functions e.g. sin, cos, tan, cot, sinh, acos - and much more! The app also comes with a comprehensive in-built help system with plenty of examples. CLCalculator is powered by math.js (https://mathjs.org/)

Screenshots

Objective Calculator4 screens
Command4 screens

Verdict

The call

The clearest difference is in-app purchases: Command at none against Objective Calculator's 1. Command also leads on rating (5.0 vs 4.7) and update cadence (every 5 days vs every 3 weeks). Objective Calculator's advantage is ratings volume (19 vs 5) and iOS requirement (11.0 vs 13.0). 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. Objective Calculator sells 1 one-off in-app purchase. Command asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Command holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 19 and 5 respectively. Written reviews point the same way: 87% of Objective Calculator's written reviews are positive against 100% of Command's.

UpkeepUpdate frequency

Objective Calculator ships an update every 3 weeks, Command every 5 days. The most recent releases landed on October 5, 2026 and September 9, 2026 respectively.

Scorecard7 real differences · 3 level
Objective Calculator versus Command: the parameters behind the verdict, then further details
ParameterObjective CalculatorCommand
PriceFreeFree
Rating4.7 (19 ratings)5.0 (5 ratings) — better
Positive reviews86.7% of reviews100.0% of reviews — better
Number of ratings19 — better5
Update frequencyEvery 3 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS11.0 — better13.0
Further details — not scored
Size10 MB1 MB
Age rating4+4+
DeveloperThiago Anderson MartinsKetan Appa

Customer experience

Objective Calculator

All ratings19 ratings
Positive94.7%
Neutral0.0%
Negative5.3%
Written reviews30 reviews
Positive86.7%
Neutral3.3%
Negative10.0%

Command

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Objective Calculator

One-time1
  • Objective Calculator Pro$1.99
None

Command

No in-app purchases

Questions

Is Objective Calculator free?
Objective Calculator is free to download, with in-app purchases available.
Is Command free?
Command is free to download, with no in-app purchases.
Which has better reviews, Objective Calculator or Command?
Command is rated higher. Objective Calculator averages 4.7 out of 5 from 19 ratings, while Command averages 5.0 from 5 ratings.
Do Objective Calculator or Command have ads?
Neither Objective Calculator nor Command shows ads.
Which is updated more often, Objective Calculator or Command?
Objective Calculator ships an update every 3 weeks, and Command every 5 days. Most recently, Objective Calculator was updated on October 5, 2026 and Command on September 9, 2026.

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