Comparison

Big Yellow Calculator vs RedoCalc

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

Head to head
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!

About

RedoCalc

Features
Read full description

This is a calculator for people who only use it for simple calculations, such as adding up receipts or calculating the cost of a meal split between several people, but who are always worried about whether the input was correct. As it is a simple calculator, the only operations it can perform are - Four arithmetic operations (addition, subtraction, multiplication, division) - Percentage calculations (including calculations such as consumption tax using percentages) . The results are displayed as numbers with a digit symbol. There is no complicated exponential display. The calculation proceeds in the order of the keys you enter. There is no priority for multiplication or division. The formulas you enter are displayed in order in the upper area as a history. If you tap the white part, it will turn yellow and you will be able to modify that part. (You can modify not only numbers, but also arithmetic symbols such as + and ×.) If you tap “=”, the expressions from the first line to the last line will be recalculated. The result will be automatically copied, so you can switch to other apps and paste the value there.

Screenshots

Big Yellow Calculator3 screens
RedoCalc3 screens

Verdict

The call

The clearest difference is in-app purchases: RedoCalc at none against Big Yellow Calculator's 1. RedoCalc also leads on update cadence (every 3 days vs every 2 months). Big Yellow Calculator's advantage is ads (none vs shown) and iOS requirement (15.6 vs 18.0). 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. Big Yellow Calculator sells 1 one-off in-app purchase. RedoCalc asks for nothing beyond the download.

UpkeepUpdate frequency

Big Yellow Calculator ships an update every 2 months, RedoCalc every 3 days. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 5 level
Big Yellow Calculator versus RedoCalc: the parameters behind the verdict, then further details
ParameterBig Yellow CalculatorRedoCalc
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 3 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPod — betteriPhone
Requires iOS15.6 — better18.0
Further details — not scored
Size1 MB3 MB
Age rating4+4+
Developer山 黄Toshiyuki Kuwabara

In-app purchases

1 purchases

Big Yellow Calculator

One-time1
  • Unlock all features$0.99
None

RedoCalc

No in-app purchases

Questions

Is Big Yellow Calculator free?
Big Yellow Calculator is free to download, with in-app purchases available.
Is RedoCalc free?
RedoCalc is free to download, with no in-app purchases.
Do Big Yellow Calculator or RedoCalc have ads?
RedoCalc shows ads; Big Yellow Calculator does not.
Which is updated more often, Big Yellow Calculator or RedoCalc?
Big Yellow Calculator ships an update every 2 months, and RedoCalc every 3 days. Most recently, Big Yellow Calculator was updated on November 3, 2026 and RedoCalc on October 25, 2026.

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