Comparison

Calculator + vs Xmart Calculator Pro

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

Head to head
About

Calculator +

This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.

Highlights
  • Free basic and scientific calculator
  • Intuitive interface with equation and result display
  • Fraction and percent support
  • Advanced editing capabilities
  • Polynomial and linear equation solver
  • Graphing calculator
  • Unit conversion and geometric calculators
Features
Read full description

Award winning calculator app for iPad and iPhone. Designed with simplicity, usability and beauty in mind! FEATURES: - Free basic calculator - Free scientific calculator - Elegant & Intuitive interface - Advanced editing by easily going back and forth - Displays both the equation & the result at the same time - Supports Fraction & Percent - Supports many scientific functions If you are looking for more advanced features you can upgrade to one or more of the following: - Fraction Calculator with feet, inches & cm support! - Solving for x with a polynomial Calculator for solving quadratic & cubic equations 2x³ - 4x² - 22x + 24 = 0 - Linear Equations Solver for solving system of linear equations 2x – y = 9 3x + 4y = –14 - Graphing Calculator to find the local min, max & intersection points y = 2x³ – 4x (x² + y²)³ = -27y²x² - Triangle Calculator - Cone Calculator - Arc Calculator - Circle Calculator - Base Converter ( HEX OCT BIN DEC ) - Multiple themes Enjoy the FREE Scientific calculator on your iPhone & iPad. If you like it, support us by upgrading or giving us a positive review. Thanks :) Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Xmart Calculator Pro

This app functions as an intelligent, programmable calculator that allows users to define custom algebraic functions. It provides instant results as expressions are updated and offers step-by-step calculation traceability. Users can save, recall, and share their calculation history.

Highlights
  • Define custom algebraic functions
  • Instant calculation results
  • Step-by-step calculation traceability
  • Save and recall calculation history
  • Configurable appearance (colors, fonts)
  • Includes a mortgage calculator
Features
Read full description

Let's look at some simple questions: Question 1: James can make $200 per day, what would be his annual income ( He works 5 days a week, 48 weeks per year) ? This is easy, just enter an expression as this in Xmart Calculator: 200 x 5 x 48 Question 2: How many times of tapping a button to calculate his annual income? 8 times on a normal calculator, 7 times on Xmart Calculator (you don't need to tap the '=' button). Question 3: What if his day rate is $320, $400, $500...? Well, very similar: 320 x 5 x 48; 400 x 5 x 48; 500 x 5 x 48... What's the problem? With a normal calculator, we have to enter the same buttons 'x 5 x 48' very time when the only value changes is just the day rate. Is there any way to just enter the day rate and the result will update automatically? With Xmart Calculator, YES! You can define a Algebra function like this: "IncomeByDay(X) = X x 5 x 48" Then you can just select the function and enter the value for 'X' and the result will update straight away! To get James annual income, you just need to tap buttons 4 times. -- End of questions -- Xmart Calculator is appreciated as an intelligent, programmable and expandable calculator based on text expression. In addition to most of the common and scientific functions, users can also define personal functions. All calculations are step-by-step traceable. **Quick start: * There is no '=' button in this calculator app, it will calculate and show result as soon as the expression is updated. * Swipe up/down to hide/show the history records. * Swipe left and right to hide/show the scientific/math functions. **Main feature: * Custom functions: user can define any algebra functions with up to 9 parameters. * Use a custom function in the main expression or play with it separately. * Calculate and show result instantly when the input is updated. * Most common scientific & math functions are included. * Save calculation to history * Review & Recall history results or expressions * Name/label a history item meaningfully * Record and show step by step details of the calculation * Share history with friends * Fast mortgage calculator is included **Additional features * Support Apple Watch & iMessage * Auto save: turn ON/OFF or set a custom timer for saving results automatically * Colours, layouts and fonts are configurable, you can design your own calculator. * Turn ON/OFF button sounds. * Select button sound from 6 different options

Screenshots

Calculator +4 screens
Xmart Calculator Pro4 screens

Verdict

The call

The clearest difference is price: Calculator + at Free against Xmart Calculator Pro's $5.99. Calculator + also leads on update cadence (every 5 days vs every 6 weeks) and ratings volume (10K vs 153). Xmart Calculator Pro's advantage is in-app purchases (none vs 12) and ads (none vs shown). On rating and review sentiment 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

Calculator + is free to download; Xmart Calculator Pro costs $5.99 up front. Calculator + sells 12 in-app purchases, starting at $4.99 per month. Xmart Calculator Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Calculator + holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Calculator + has 10K ratings behind it against 153, so its average is the more settled of the two. Written reviews split almost evenly too, at 85% and 85% positive.

UpkeepUpdate frequency

Calculator + ships an update every 5 days, Xmart Calculator Pro every 6 weeks. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

Scorecard8 real differences · 2 level
Calculator + versus Xmart Calculator Pro: the parameters behind the verdict, then further details
ParameterCalculator +Xmart Calculator Pro
PriceFree — better$5.99
Rating4.6 (10K ratings) — better4.4 (153 ratings)
Positive reviews84.9% of reviews85.5% of reviews — better
Number of ratings10K — better153
Update frequencyEvery 5 days — betterEvery 6 weeks
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPadiPhone, iPad, iPod, Apple Watch — better
Requires iOS16.413.0 — better
Further details — not scored
Size50 MB13 MB
Age rating4+4+
DeveloperxNeat.comXHLIU

Customer experience

Calculator +

All ratings10,255 ratings
Positive91.8%
Neutral2.8%
Negative5.3%
Written reviews942 reviews
Positive84.9%
Neutral4.0%
Negative11.0%

Xmart Calculator Pro

All ratings153 ratings
Positive84.3%
Neutral7.2%
Negative8.5%
Written reviews172 reviews
Positive85.5%
Neutral4.1%
Negative10.5%

User reviews

Calculator +

From 10K App Store ratings

What we love

  • 👍 Great features and easy to use
  • 👍 Efficient and quick
  • 👍 Versatile, functional calculator
  • 👍 Fantastic, easy to use app
  • 👍 Awesome calculator app

Room to improve

  • 🐛 New updated layout is awful
  • 🐛 App is now terrible
  • 🔒 Paying customer screwed over by update
  • 🔒 Now timed trial, no free w/ads version
  • 🔒 Not honest

Xmart Calculator Pro

From 153 App Store ratings

What we love

  • 💾 History saving and recall functionality
  • 👍 User-friendly and intuitive interface
  • 🎨 Customizable colors and themes
  • 💡 Custom function creation and storage
  • 🚀 Fast and efficient calculations

Room to improve

  • 🐛 Glitches with equals button reuse
  • 🐛 Preferences window opens unexpectedly
  • 📱 iPad landscape-only orientation limitation
  • 🐛 Percentage calculations don't work on-the-fly
  • 🐛 Decimal multiplication errors (.15*.80)

Bugs and requests

Calculator +

Reported bugs

5 issues
  • Fraction calculator has TWO subtraction buttons and NO division button
  • Decimals seem to be changed to fraction with no apparent way of changing it back
  • Functionality is dropped by forcing you to the main menu every time you open it
  • Currency converter broken
  • Login screen freezes

Requested features

5 requests
  • Add mod function
  • Add commas
  • Add 1/x function
  • Support for Retina Display
  • Add number 4 with two lines

Xmart Calculator Pro

Reported bugs

8 issues
  • Illegal character error when reusing equals button result
  • Preferences dialog opens on equals button tap
  • Save button disappeared in history feature
  • Percentage key calculations malfunction
  • Decimal multiplication errors
Show 3 more
  • Cursor jumping when editing functions
  • Pop-up ads freezing application
  • Inconsistent percentage operation behavior

Requested features

8 requests
  • Fraction form results display
  • RPN (Reverse Polish Notation) support
  • Better iPad screen optimization
  • Decimal input accepting '.2' as '0.2'
  • Smart decimal place display
Show 3 more
  • Portrait mode option for iPad
  • Easier custom function editing interface
  • Light color theme with dark font contrast

In-app purchases

12 purchases

Calculator +

Subscriptions2
  • Scientific Calculator3 Days trial$4.991 Month
  • Calculator7 Days trial$39.991 Year
One-time10
  • Linear Calculator$2.99
  • Factoring Calculator$2.99
  • Handwriting Calculator$2.99
Show 7 more
  • Currency Converter$2.99
  • Themes Pack$2.99
  • Graphing Calculator$3.99
  • Fraction Calculator$3.99
  • Scientific Calculator$4.99
  • Calculator Plus$4.99
  • Calculator$16.99
None

Xmart Calculator Pro

No in-app purchases

Questions

Is Calculator + free?
Calculator + is free to download, with in-app purchases available.
Is Xmart Calculator Pro free?
Xmart Calculator Pro costs $5.99, with no in-app purchases.
Which has better reviews, Calculator + or Xmart Calculator Pro?
Calculator + is rated higher. Calculator + averages 4.6 out of 5 from 10K ratings, while Xmart Calculator Pro averages 4.4 from 153 ratings.
Do Calculator + or Xmart Calculator Pro have ads?
Calculator + shows ads; Xmart Calculator Pro does not.
Which is updated more often, Calculator + or Xmart Calculator Pro?
Calculator + ships an update every 5 days, and Xmart Calculator Pro every 6 weeks. Most recently, Calculator + was updated on October 30, 2026 and Xmart Calculator Pro on October 29, 2026.

Other comparisons