BigInt Calculator vs CalcSmart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- AI-powered problem solving
- Photo, voice, and handwriting input
- Step-by-step explanations
- Revolutionary graphing
- Financial analysis tools
- Universal language support
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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
Verdict
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
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.
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.
BigInt Calculator ships an update every 3 weeks, CalcSmart monthly. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.
| Parameter | BigInt Calculator | CalcSmart |
|---|---|---|
| Price | Free — better | $19.99 |
| Rating | 4.5 (4 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 40.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 — better | 3 |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Viktor Pobedria | Malachi Brown |
Customer experience
BigInt Calculator
CalcSmart
In-app purchases
BigInt Calculator
No in-app purchases
CalcSmart
No in-app purchases
Questions
Is BigInt Calculator free?
Is CalcSmart free?
Which has better reviews, BigInt Calculator or CalcSmart?
Do BigInt Calculator or CalcSmart have ads?
Which is updated more often, BigInt Calculator or CalcSmart?
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