# Calculator∫ vs BIG CALCULATOR.

The clearest difference is in-app purchases: Calculator∫ at none against BIG CALCULATOR.'s 1. Calculator∫ also leads on ads (none vs shown) and update cadence (weekly vs every 3 weeks). BIG CALCULATOR.'s advantage is review sentiment (100% vs 84%) and ratings volume (70 vs 7). On price, rating and device support there is nothing between them.

Both are free to download. BIG CALCULATOR. sells 1 in-app purchase, starting at $2.99 per year. Calculator∫ asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for Calculator∫ against 4.6 for BIG CALCULATOR.. That said, the two scores are not equally well evidenced: BIG CALCULATOR. has 70 ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 84% of Calculator∫'s written reviews are positive against 100% of BIG CALCULATOR.'s.

Calculator∫ ships an update weekly, BIG CALCULATOR. every 3 weeks. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Calculator∫ | BIG CALCULATOR. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (7 ratings)](https://appshunter.io/ios/app/calculator/id635938472/reviews) | **[4.6 (70 ratings)](https://appshunter.io/ios/app/big-calculator/id1114392920/reviews)** |
| Number of ratings | 7 | **70** |
| Positive reviews | 83.8% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | **Free** | Ad-supported |
| Size | 1 MB | 13 MB |
| Requires iOS | **4.3** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [7th Gear](https://appshunter.io/developer/321178305) | [Adysseus](https://appshunter.io/developer/447444997) |

## What reviewers say

### Calculator∫

[App page](https://appshunter.io/ios/app/calculator/id635938472)

Perform calculations quickly and accurately with large buttons. Personalize the interface by selecting custom background and text colors. This straightforward utility is designed for intuitive use.

**Highlights:** Large buttons for easy input, Accurate calculations, Customizable background colors, Customizable text colors, Intuitive user interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### BIG CALCULATOR.

[App page](https://appshunter.io/ios/app/big-calculator/id1114392920)

This utility app offers a straightforward and visually clear calculator experience, ideal for users of all ages. Its large numbers and dark interface enhance readability, while landscape mode support on iPhones and iPads provides added convenience.

**Highlights:** Large numbers for easy viewing, Simple and easy-to-see interface, Landscape mode support, Dark UI for eye comfort, Suitable for all ages

**Features:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Big Calculator Plus | $2.99 | per year |


## Frequently asked questions

### Is Calculator∫ free?

Calculator∫ is free to download, with no in-app purchases.

### Is BIG CALCULATOR. free?

BIG CALCULATOR. is free to download, with in-app purchases available.

### Which has better reviews, Calculator∫ or BIG CALCULATOR.?

BIG CALCULATOR. is rated higher. Calculator∫ averages 4.6 out of 5 from 7 ratings, while BIG CALCULATOR. averages 4.6 from 70 ratings.

### Do Calculator∫ or BIG CALCULATOR. have ads?

BIG CALCULATOR. shows ads; Calculator∫ does not.

### Which is updated more often, Calculator∫ or BIG CALCULATOR.?

Calculator∫ ships an update weekly, and BIG CALCULATOR. every 3 weeks. Most recently, Calculator∫ was updated on November 1, 2026 and BIG CALCULATOR. on November 6, 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.*