Comparison

BigInt Calculator vs CaIculator

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

CaIculator

A simple and intuitive calculator app designed for ease of use. It offers features like a backspace key, decimal point/comma support, calculation history, and customizable themes. Regular updates ensure continuous improvement.

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

Calculator app. Simple, easy to use, and packed with features to help you get the job done. Our calculator is designed with you in mind, whether you're a student, a professional, or just need to do some quick calculations. 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
CaIculator4 screens

Verdict

The call

The clearest difference is review sentiment: CaIculator at 100% against BigInt Calculator's 57%. CaIculator also leads on rating (4.9 vs 4.6) and ratings volume (27 vs 5). BigInt Calculator's advantage is in-app purchases (none vs 1) and ads (none vs shown). 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. CaIculator sells 1 one-off in-app purchase. BigInt Calculator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CaIculator holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: CaIculator has 27 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 57% of BigInt Calculator's written reviews are positive against 100% of CaIculator's.

UpkeepUpdate frequency

BigInt Calculator ships an update every 3 weeks, CaIculator every 5 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

Scorecard8 real differences · 2 level
BigInt Calculator versus CaIculator: the parameters behind the verdict, then further details
ParameterBigInt CalculatorCaIculator
PriceFreeFree
Rating4.6 (5 ratings)4.9 (27 ratings) — better
Positive reviews57.1% of reviews100.0% of reviews — better
Number of ratings527 — better
Update frequencyEvery 3 weeks — betterEvery 5 months
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 MB61 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%

CaIculator

All ratings22 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

BigInt Calculator

No in-app purchases

1 purchases

CaIculator

One-time1
  • Remove Ads$3.99

Questions

Is BigInt Calculator free?
BigInt Calculator is free to download, with no in-app purchases.
Is CaIculator free?
CaIculator is free to download, with in-app purchases available.
Which has better reviews, BigInt Calculator or CaIculator?
CaIculator is rated higher. BigInt Calculator averages 4.6 out of 5 from 5 ratings, while CaIculator averages 4.9 from 27 ratings.
Do BigInt Calculator or CaIculator have ads?
CaIculator shows ads; BigInt Calculator does not.
Which is updated more often, BigInt Calculator or CaIculator?
BigInt Calculator ships an update every 3 weeks, and CaIculator every 5 months. Most recently, BigInt Calculator was updated on October 21, 2026 and CaIculator on October 24, 2026.

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