# Calculator Pro basic vs BIG CALCULATOR.

The clearest difference is rating: Calculator Pro basic at 5.0 against BIG CALCULATOR.'s 4.5. Calculator Pro basic also leads on ads (none vs shown) and monetization model (free vs ad-supported). BIG CALCULATOR.'s advantage is ratings volume (54 vs 1) and update cadence (weekly vs every 3 weeks). On price, review sentiment, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Calculator Pro basic holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: BIG CALCULATOR. has 54 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Calculator Pro basic ships an update every 3 weeks, BIG CALCULATOR. weekly. The most recent releases landed on August 3, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Calculator Pro basic | BIG CALCULATOR. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calculator-pro-basic/id1042600645/reviews)** | [4.5 (54 ratings)](https://appshunter.io/ios/app/big-calculator/id1114392920/reviews) |
| Number of ratings | 1 | **54** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | **Free** | Ad-supported |
| Size | 7 MB | 13 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [Kenichi Yoshikawa](https://appshunter.io/developer/954163256) | [Adysseus](https://appshunter.io/developer/447444997) |

## What reviewers say

### Calculator Pro basic

[App page](https://appshunter.io/ios/app/calculator-pro-basic/id1042600645)

This calculator app allows extensive customization of its appearance and button functions. Users can personalize wallpapers, button shapes, colors, and even the position of function buttons. It supports various calculation methods and display modes for a tailored user experience.

**Highlights:** Customizable button shapes, colors, and positions, Set custom wallpaper backgrounds, Multiple calculation methods and rounding modes, Adjustable decimal places and angle units, History log with display options, Supports portrait and landscape modes

**Features:** macOS Compatibility

**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

**In-app purchases:** none


## Frequently asked questions

### Is Calculator Pro basic free?

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

### Is BIG CALCULATOR. free?

BIG CALCULATOR. is free to download, with no in-app purchases.

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

Calculator Pro basic is rated higher. Calculator Pro basic averages 5.0 out of 5 from 1 ratings, while BIG CALCULATOR. averages 4.5 from 54 ratings.

### Do Calculator Pro basic or BIG CALCULATOR. have ads?

BIG CALCULATOR. shows ads; Calculator Pro basic does not.

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

Calculator Pro basic ships an update every 3 weeks, and BIG CALCULATOR. weekly. Most recently, Calculator Pro basic was updated on August 3, 2026 and BIG CALCULATOR. on September 21, 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.*