Comparison

Calculator Pro basic vs Big Yellow Calculator

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

Big Yellow Calculator

This versatile calculator app offers customizable layouts, switching between standard and scientific modes. It also allows users to store up to 10 intermediate results for complex calculations, making it a functional tool for various needs.

Highlights
  • Customizable layouts
  • Standard and scientific modes
  • Store intermediate results
  • Up to 10 stored results
  • Versatile functionality
Features
Read full description

Tired of rigid, one-size-fits-all calculator interfaces? CustomCalc redefines your calculating experience with two powerful core features tailored for personalized and efficient math work. Fully Customizable Button Layout Take full control of your calculator interface! Add, delete, rearrange, and hide any function buttons based on your daily needs. Whether you want a minimal layout for simple daily arithmetic or a customized panel for advanced scientific calculations, you can design it in one tap. Drag-and-drop operation makes layout adjustment intuitive and effortless, eliminating useless buttons and keeping your most-used functions front and center. Save & Recall Intermediate Results Solve complex multi-step calculations effortlessly! Store any intermediate values during your computing process with one click. Access, edit, or reuse saved results anytime without rewriting formulas or retyping numbers. Perfect for accounting, engineering calculations, student homework, and daily multi-step math tasks, greatly reducing calculation errors and saving your time. Designed for iOS devices, CustomCalc delivers smooth, ad-free calculating performance. Customize your layout, organize your data, and calculate smarter today!

Screenshots

Calculator Pro basic4 screens
Big Yellow Calculator3 screens

Verdict

The call

The clearest difference is in-app purchases: Calculator Pro basic at none against Big Yellow Calculator's 1. Calculator Pro basic also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (8.0 vs 15.6). On price, rating, ratings volume and ads 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. Big Yellow Calculator sells 1 one-off in-app purchase. Calculator Pro basic asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Calculator Pro basic against 5.0 for Big Yellow Calculator. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Calculator Pro basic ships an update every 3 weeks, Big Yellow Calculator every 2 months. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

Scorecard3 real differences · 7 level
Calculator Pro basic versus Big Yellow Calculator: the parameters behind the verdict, then further details
ParameterCalculator Pro basicBig Yellow Calculator
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings11
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS8.0 — better15.6
Further details — not scored
Size7 MB1 MB
Age rating4+4+
DeveloperKenichi Yoshikawa山 黄

Customer experience

Calculator Pro basic

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

Big Yellow Calculator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Calculator Pro basic

No in-app purchases

1 purchases

Big Yellow Calculator

One-time1
  • Unlock all features$0.99

Questions

Is Calculator Pro basic free?
Calculator Pro basic is free to download, with no in-app purchases.
Is Big Yellow Calculator free?
Big Yellow Calculator is free to download, with in-app purchases available.
Which has better reviews, Calculator Pro basic or Big Yellow Calculator?
Calculator Pro basic and Big Yellow Calculator are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Calculator Pro basic or Big Yellow Calculator have ads?
Neither Calculator Pro basic nor Big Yellow Calculator shows ads.
Which is updated more often, Calculator Pro basic or Big Yellow Calculator?
Calculator Pro basic ships an update every 3 weeks, and Big Yellow Calculator every 2 months. Most recently, Calculator Pro basic was updated on October 24, 2026 and Big Yellow Calculator on October 12, 2026.

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