# Calculator· vs Big Button Calculator Pro

The clearest difference is price: Calculator· at Free against Big Button Calculator Pro's $9.99. Calculator· also leads on ratings volume (34K vs 463). Big Button Calculator Pro's advantage is in-app purchases (none vs 3) and ads (none vs shown). On rating, review sentiment, update cadence and device support there is nothing between them.

Calculator· is free to download; Big Button Calculator Pro costs $9.99 up front. Calculator· sells 3 in-app purchases, starting at $0.99 per month. Big Button Calculator Pro asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Calculator· against 4.9 for Big Button Calculator Pro. That said, the two scores are not equally well evidenced: Calculator· has 34K ratings behind it against 463, 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 79% of Big Button Calculator Pro's.

Calculator· ships an update every 3 months, Big Button Calculator Pro every 2 months. The most recent releases landed on October 18, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Calculator· | Big Button Calculator Pro |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | [4.9 (34K ratings)](https://appshunter.io/ios/app/calculator/id554836784/reviews) | [4.9 (463 ratings)](https://appshunter.io/ios/app/big-button-calculator-pro/id1131056963/reviews) |
| Number of ratings | **34K** | 463 |
| Positive reviews | **84.3% of reviews** | 78.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 47 MB | 27 MB |
| Requires iOS | **15.0** | 15.2 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tim O's Studios, LLC](https://appshunter.io/developer/412839685) | [Cider Software LLC](https://appshunter.io/developer/465180756) |

## What reviewers say

### Calculator·

[App page](https://appshunter.io/ios/app/calculator/id554836784)

This app offers a straightforward calculation experience, focusing on essential functions without unnecessary complexity. It includes basic arithmetic, percentage calculations, and advanced functions like square root. Users can customize the appearance with multiple color schemes and utilize features like result copying and split-screen multitasking on iPad.

**Highlights:** Basic arithmetic operations, Percentage calculations, Multiple color schemes, Copy results, Square, square root, inverse functions, iPad Split View support, Apple Watch support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade App | $0.99 | per month |
| Upgrade App | $4.99 | per year |
| Upgrade App | $1.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 🚀 Quick and responsive
- 💡 Percentage function works well
- 👍 Large, clear buttons
- 👍 Straightforward, no-frills design

**What reviewers complain about**

- 🔋 Frequent ads can be distracting
- 🐛 Occasional crashes or freezes
- 🔒 Lack of customization options
- 💡 No backspace/undo function
- 💡 Missing advanced features like memory

**Reported bugs**

- Crashes when performing long calculations
- Freezes when opening the app
- Incorrect results for some complex calculations

**Requested features**

- Add a backspace/undo button
- Implement a history/memory feature
- Provide more customization options
- Reduce frequency of ads


### Big Button Calculator Pro

[App page](https://appshunter.io/ios/app/big-button-calculator-pro/id1131056963)

A user-friendly calculator app featuring large, colorful buttons and a dual-line display for simultaneous input and result viewing. It supports long equations, offers customizable themes and sounds, and includes accessibility features.

**Highlights:** Dual-line display, Big buttons, 18 color themes, Multi-line input, Gesture controls, VoiceOver accessibility

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Calculator· free?

Calculator· is free to download, with in-app purchases available.

### Is Big Button Calculator Pro free?

Big Button Calculator Pro costs $9.99, with no in-app purchases.

### Which has better reviews, Calculator· or Big Button Calculator Pro?

Calculator· and Big Button Calculator Pro are both rated 4.9 out of 5 on the App Store, from 34K and 463 ratings respectively.

### Do Calculator· or Big Button Calculator Pro have ads?

Calculator· shows ads; Big Button Calculator Pro does not.

### Which is updated more often, Calculator· or Big Button Calculator Pro?

Calculator· ships an update every 3 months, and Big Button Calculator Pro every 2 months. Most recently, Calculator· was updated on October 18, 2026 and Big Button Calculator Pro on October 8, 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.*