Comparison

Calculator Pro basic vs CalculatorDU

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

Head to head
About

Calculator Pro basic

This calculator app allows extensive customization of its appearance and button functions. Users can personalize wallpapers, button shapes, colors, and even the position of function buttons. It supports various calculation methods and display modes for a tailored user experience.

Highlights
  • Customizable button shapes, colors, and positions
  • Set custom wallpaper backgrounds
  • Multiple calculation methods and rounding modes
  • Adjustable decimal places and angle units
  • History log with display options
  • Supports portrait and landscape modes
Features
Read full description

Calculator Pro basic can change the position and the function of the button and set the wallpaper background freely, not to mention the color and the shape. Optimized to multitasking function of iOS.You can easy to call this app in a "Split View" or "Slide Over". The screen layout will change automatically according to the portrait or landscape mode on your iPad and iPhone and the big buttons fitted to the size and mode of display are easy to view for the user. Try to create your own calculator suitable for your tastes by using abundant setting well. FEATURES : Calculation : - Two Calculation method : functional or sequential - Three rounding mode : rounding , up or cut - Number of digits after the decimal point : free , zero , one , two , three or four - Angle unit : degree or radian Appearance : - Color or Wallpaper : Set the wallpaper with a photograph or a camera, or select a background color - Number Format : Select a digit grouping and decimal point from among the 8 types including India format - Sound of buttons : Select the button sound from nine timbres or turn off Result: - Character color:Freely set color by the slider - Background color:Freely set color and opacity by the slider - Expression color:Freely set color or hide by the slider Button : - Shape : Square , Round Square , Circle , Diamond , Heart or Cogwheel - Size : Large , Medium or Small - Dimensions : Flat , Solid or Outline - Character color:Freely set color by the slider - Background color:Freely set color and opacity by the slider - Position : The position of buttons are freely changed - Function button : Three function buttons can be changed, thease button is include Grand total, Rand, Sine,1/x, Route, etc... History : - Equals : Over write last result or Add the result the history - Vertical (portrait) mode : Indication Left , Hidden or Indication Right - Horizontal (landscape) mode : Indication place Left or Right - character color:Freely set color by the slider - background color:Freely set color and opacity by the slider - Expression color:Freely set color or hide by the slider SUPPORTS : Non retina and Retina display on iPhone, iPad and iPod Touch. iPhone 4 to 8 plus, iPhone SE, iPhone X, iPad 2 to iPad Pro and iPad mini to iPad mini 4 , iPod touch 3gen and later. iOS 8.0 and later.

About

CalculatorDU

This utility app offers a straightforward calculator for daily use. It supports basic arithmetic, value storage, and calculation verification. Customize display formats and symbols for a personalized experience.

Highlights
  • Basic arithmetic operations
  • Value storage and retrieval
  • Calculation verification
  • Copy and paste functionality
  • Customizable numerical display
  • Portrait and landscape modes
Features
Read full description

A simple, free calculator app. It provides basic calculation, value storage, and verification. # Arithmetic operations Perform addition, subtraction, multiplication, division, and square root operations. # Save value Input values and calculated values can be saved for later use. # Check You can verify the calculation process. # Copy and paste You can copy and paste numerical values. # Operation symbols You can select multiplication and division symbols. # Numerical display format You can select decimal points, delimiters, and split digit groups. # Digits Displays up to 21 digits for calculations. # Language You can change the display language. # Orientation Works in both portrait and landscape modes.

Screenshots

Calculator Pro basic4 screens
CalculatorDU4 screens

Verdict

The call

The clearest difference is in-app purchases: Calculator Pro basic at none against CalculatorDU's 1. Calculator Pro basic also leads on ads (none vs shown) and rating (5.0 vs 4.7). CalculatorDU's advantage is ratings volume (15 vs 1). 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. CalculatorDU sells 1 one-off in-app purchase. Calculator Pro basic asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Calculator Pro basic holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: CalculatorDU has 15 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Calculator Pro basic ships an update every 3 weeks, CalculatorDU every 2 months. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

Scorecard7 real differences · 3 level
Calculator Pro basic versus CalculatorDU: the parameters behind the verdict, then further details
ParameterCalculator Pro basicCalculatorDU
PriceFreeFree
Rating5.0 (1 ratings) — better4.7 (15 ratings)
Positive reviews100.0% of reviews—
Number of ratings115 — better
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better15.0
Further details — not scored
Size7 MB87 MB
Age rating4+4+
DeveloperKenichi YoshikawaHappyCode Lab

Customer experience

Calculator Pro basic

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

CalculatorDU

All ratings15 ratings
Positive93.3%
Neutral6.7%
Negative0.0%

In-app purchases

None

Calculator Pro basic

No in-app purchases

1 purchases

CalculatorDU

One-time1
  • Hide ads$2.99

Questions

Is Calculator Pro basic free?
Calculator Pro basic is free to download, with no in-app purchases.
Is CalculatorDU free?
CalculatorDU is free to download, with in-app purchases available.
Which has better reviews, Calculator Pro basic or CalculatorDU?
Calculator Pro basic is rated higher. Calculator Pro basic averages 5.0 out of 5 from 1 ratings, while CalculatorDU averages 4.7 from 15 ratings.
Do Calculator Pro basic or CalculatorDU have ads?
CalculatorDU shows ads; Calculator Pro basic does not.
Which is updated more often, Calculator Pro basic or CalculatorDU?
Calculator Pro basic ships an update every 3 weeks, and CalculatorDU every 2 months. Most recently, Calculator Pro basic was updated on October 24, 2026 and CalculatorDU on October 21, 2026.

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