# BigInt Calculator vs CalcSmart

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.

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.

## The numbers

| Metric | BigInt Calculator | CalcSmart |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | [4.5 (4 ratings)](https://appshunter.io/ios/app/bigint-calculator/id1610628748/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/calcsmart/id6749968296/reviews)** |
| Number of ratings | **4** | 3 |
| Positive reviews | 40.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free | Free |
| Size | 2 MB | 14 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Viktor Pobedria](https://appshunter.io/developer/1610628750) | [Malachi Brown](https://appshunter.io/developer/1832966067) |

## What reviewers say

### BigInt Calculator

[App page](https://appshunter.io/ios/app/bigint-calculator/id1610628748)

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:** Vision Pro support

**In-app purchases:** none


### CalcSmart

[App page](https://appshunter.io/ios/app/calcsmart/id6749968296)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*