Comparison

BigInt Calculator vs CalcSmart

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

CalcSmart

This advanced AI-powered calculator offers instant solutions to complex problems through photos, voice, or handwriting. It provides step-by-step explanations, revolutionary graphing, and financial analysis, making math accessible for students, professionals, and everyday users.

Highlights
  • AI-powered problem solving
  • Photo, voice, and handwriting input
  • Step-by-step explanations
  • Revolutionary graphing
  • Financial analysis tools
  • Universal language support
Features
Read full description

CalcSmart - Upgrade to Intelligent Problem-Solving Experience the calculator of 2050, available today. CalcSmart uses advanced AI to solve complex problems instantly. Take photos, speak equations, or write by hand—get instant solutions with step-by-step explanations. Revolutionary graphing, financial analysis, and universal language support make this the most advanced calculator ever created. The future of mathematics is here. Students - Homework Helper: Solve complex problems with detailed explanations - Exam Preparation: Practice with multiple-choice question recognition - Learning Tool: Understand concepts through step-by-step solutions Professionals - Engineers: Access specialized formulas for electrical, mechanical, and civil engineering - Financial Analysts: Comprehensive financial calculations and projections - Scientists: Advanced mathematical functions and unit conversions - Medical Professionals: Specialized medical formulas and calculations Everyday Users - Personal Finance: Calculate loans, investments, and savings goals - Home Projects: Convert measurements and calculate areas - Shopping: Compare prices and calculate discounts - Travel: Currency conversion and distance calculations Get CalcSmart Today Available on the App Store - Version: 25.10.11 - Compatibility: iOS 15.0+ - Size: Optimized for all devices - Price: Premium value, accessible pricing Download now and experience the future of mathematical problem-solving!

Screenshots

BigInt Calculator4 screens
CalcSmart4 screens

Verdict

The call

The clearest difference is review sentiment: CalcSmart at 100% against BigInt Calculator's 40%. CalcSmart also leads on rating (5.0 vs 4.5) and iOS requirement (15.0 vs 18.0). BigInt Calculator's advantage is price (Free vs $19.99). On ratings volume, update cadence, ads and in-app purchases 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

BigInt Calculator is free to download; CalcSmart costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

CalcSmart holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews point the same way: 40% of BigInt Calculator's written reviews are positive against 100% of CalcSmart's.

UpkeepUpdate frequency

BigInt Calculator ships an update every 3 weeks, CalcSmart monthly. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.

Scorecard4 real differences · 6 level
BigInt Calculator versus CalcSmart: the parameters behind the verdict, then further details
ParameterBigInt CalculatorCalcSmart
PriceFree — better$19.99
Rating4.5 (4 ratings)5.0 (3 ratings) — better
Positive reviews40.0% of reviews100.0% of reviews — better
Number of ratings4 — better3
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS18.015.0 — better
Further details — not scored
Size2 MB14 MB
Age rating4+4+
DeveloperViktor PobedriaMalachi Brown

Customer experience

BigInt Calculator

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews5 reviews
Positive40.0%
Neutral60.0%
Negative0.0%

CalcSmart

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

BigInt Calculator

No in-app purchases

None

CalcSmart

No in-app purchases

Questions

Is BigInt Calculator free?
BigInt Calculator is free to download, with no in-app purchases.
Is CalcSmart free?
CalcSmart costs $19.99, with no in-app purchases.
Which has better reviews, BigInt Calculator or CalcSmart?
CalcSmart is rated higher. BigInt Calculator averages 4.5 out of 5 from 4 ratings, while CalcSmart averages 5.0 from 3 ratings.
Do BigInt Calculator or CalcSmart have ads?
Neither BigInt Calculator nor CalcSmart shows ads.
Which is updated more often, BigInt Calculator or CalcSmart?
BigInt Calculator ships an update every 3 weeks, and CalcSmart monthly. Most recently, BigInt Calculator was updated on September 23, 2026 and CalcSmart on September 17, 2026.

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