Comparison

BigInt Calculator vs Calculator 4.0

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

Head to head
About

BigInt Calculator

This app offers a fast, multi-threaded calculator with a spreadsheet-like interface for easy editing and instant updates. It handles large numbers and complex expressions with arbitrary-precision arithmetic, making it suitable for various real-world calculations.

Highlights
  • Table-based input with step-by-step editing
  • Automatic real-time recalculation
  • Handles complex expressions with parentheses and exponents
  • Arbitrary-precision arithmetic for massive numbers
  • 3 independent workspaces
  • Universal support for iPhone, iPad, and Mac
Features
Read full description

A calculator for those who need more than standard precision. Integers of any size stay exact — no overflow, no lost digits. Fractions and square roots are shown to 10, 50, 100 or 1000 decimal places, as you choose. Multiplying numbers thousands of digits long takes milliseconds, and independent parts of an expression are computed in parallel on all CPU cores. Features - Addition, subtraction, multiplication, division - Powers and square roots (0.5, 1.5, 2.5…) - Parentheses and correct operator precedence - mod with fast modular powers: 3^(2^127-2) mod (2^127-1) takes an instant - Factorial (!) and the functions gcd, lcm, binom, isprime and nextprime - Hexadecimal and binary: integer results in hex, numbers like 0xff and 0b101 - Scientific notation (6.022e23) and superscript powers (2¹²⁷) - Three independent tabs M1, M2, M3 for parallel work - Keyboard bar with ( ) − √ ! on iPhone and iPad - Your tabs are saved between launches; Undo after clearing - History of recent calculations - A result screen with as many digits as fit, the digit count and the order of magnitude; ≈ marks results that are not exact - Every digit of a huge result in numbered rows, with a jump to any digit - Live progress and elapsed time for long calculations, with a Cancel button - Copy the result with one tap and the expression from the menu; share a result as text, a file or an image card - VoiceOver support; on Mac, menu commands and keyboard shortcuts - Built-in help with examples - Alternative symbol support: × ÷ : and a comma as decimal separator How it works Type a power with ^: 2^127-1. An exponent of 0.5 is a square root: 2^0.5. Parentheses work as in mathematics: (2+3)*4. mod has the lowest precedence: 2^255-19 mod 8. Function arguments are separated by a semicolon: gcd(12; 18). On iPhone, functions and 0x numbers are typed on a hardware keyboard or pasted. Who it's for - Students and math teachers - Developers working with cryptography and large primes - Number theory researchers - Anyone hitting the limits of ordinary calculators No ads, no trackers, no accounts. Works on smartphone, tablet, and computer.

About

Calculator 4.0

Perform daily calculations with a clean interface and large buttons. Features include decimal support, a calculation log, and two themes. Regular updates ensure continuous improvement and new functionalities.

Highlights
  • Intuitive interface with large buttons
  • Backspace key for corrections
  • Decimal point or comma support
  • Calculation display log
  • Two customizable themes
  • Regular updates with new features
Features
Read full description

Do the math with Calculator 4.0. Our calculator app features a sleek and intuitive interface, with large buttons and a clear display for easy input and output. Plus, with the backspace key you can correct or change numbers. Other features of our calculator app include support for decimal point or decimal comma, a display log for your calculation, and two themes to choose from!. And with regular updates and new features being added all the time, our calculator app is always improving and getting even better. Download our calculator app today and experience the ultimate in calculation convenience and accuracy!

Screenshots

BigInt Calculator4 screens
Calculator 4.02 screens

Verdict

The call

The clearest difference is in-app purchases: BigInt Calculator at none against Calculator 4.0's 1. BigInt Calculator also leads on ads (none vs shown) and rating (5.0 vs 4.8). Calculator 4.0's advantage is ratings volume (54 vs 4) and iOS requirement (12.0 vs 18.0). On price, update cadence 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. Calculator 4.0 sells 1 one-off in-app purchase. BigInt Calculator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

BigInt Calculator holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Calculator 4.0 has 54 ratings behind it against 4, so its average is the more settled of the two.

UpkeepUpdate frequency

BigInt Calculator ships an update every 3 weeks, Calculator 4.0 fortnightly. Both last shipped on November 3, 2026.

Scorecard6 real differences · 4 level
BigInt Calculator versus Calculator 4.0: the parameters behind the verdict, then further details
ParameterBigInt CalculatorCalculator 4.0
PriceFreeFree
Rating5.0 (4 ratings) — better4.8 (54 ratings)
Positive reviews57.1% of reviews—
Number of ratings454 — better
Update frequencyEvery 3 weeksFortnightly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS18.012.0 — better
Further details — not scored
Size2 MB65 MB
Age rating4+4+
DeveloperViktor PobedriaEdison Largo

Customer experience

BigInt Calculator

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews7 reviews
Positive57.1%
Neutral42.9%
Negative0.0%

Calculator 4.0

All ratings53 ratings
Positive94.3%
Neutral5.7%
Negative0.0%

In-app purchases

None

BigInt Calculator

No in-app purchases

1 purchases

Calculator 4.0

One-time1
  • Remove Ads$5.99

Questions

Is BigInt Calculator free?
BigInt Calculator is free to download, with no in-app purchases.
Is Calculator 4.0 free?
Calculator 4.0 is free to download, with in-app purchases available.
Which has better reviews, BigInt Calculator or Calculator 4.0?
BigInt Calculator is rated higher. BigInt Calculator averages 5.0 out of 5 from 4 ratings, while Calculator 4.0 averages 4.8 from 54 ratings.
Do BigInt Calculator or Calculator 4.0 have ads?
Calculator 4.0 shows ads; BigInt Calculator does not.
Which is updated more often, BigInt Calculator or Calculator 4.0?
BigInt Calculator ships an update every 3 weeks, and Calculator 4.0 fortnightly. Most recently, BigInt Calculator was updated on November 3, 2026 and Calculator 4.0 on November 3, 2026.

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