# Big Button Calculator Pro vs Simple Calculator.

The clearest difference is price: Simple Calculator. at Free against Big Button Calculator Pro's $9.99. Simple Calculator. also leads on ratings volume (1.6K vs 473). Big Button Calculator Pro's advantage is ads (none vs shown) and rating (4.9 vs 4.6). On update cadence, in-app purchases, device support and iOS requirement there is nothing between them.

Simple Calculator. is free to download; Big Button Calculator Pro costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Big Button Calculator Pro holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 473 and 1.6K respectively. Written reviews point the same way: 79% of Big Button Calculator Pro's written reviews are positive against 65% of Simple Calculator.'s.

Big Button Calculator Pro ships an update every 2 months, Simple Calculator. every 3 months. The most recent releases landed on October 20, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Big Button Calculator Pro | Simple Calculator. |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.9 (473 ratings)](https://appshunter.io/ios/app/big-button-calculator-pro/id1131056963/reviews)** | [4.6 (1.6K ratings)](https://appshunter.io/ios/app/simple-calculator/id1324926551/reviews) |
| Number of ratings | 473 | **1.6K** |
| Positive reviews | **78.6% of reviews** | 65.1% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | **Ad-supported** |
| Size | 27 MB | 5 MB |
| Requires iOS | **15.2** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cider Software LLC](https://appshunter.io/developer/465180756) | [tasser gyati](https://appshunter.io/developer/1324926550) |

## What reviewers say

### 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


### Simple Calculator.

[App page](https://appshunter.io/ios/app/simple-calculator/id1324926551)

A straightforward calculator designed for speed and accuracy, mimicking classic pocket calculators. It offers real-world logic, business-focused calculations like cost, sell, and margin, and a clean interface for effortless use.

**Highlights:** Real-world logic, no forced order of operations, Running total display, Cost, sell, margin calculations, Add/subtract percentages in one step, Clean, intuitive interface with large buttons, Minimal, non-intrusive ads

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

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and easy to use
- 💡 Supports percentage calculations
- 🚀 Fast and responsive
- 🔒 No security issues reported

**What reviewers complain about**

- 🐛 Occasional display issues with underline artifacts
- 📢 Intrusive ads in free version
- 💰 Paid version not clearly advertised

**Reported bugs**

- Incorrect calculation results in some cases
- Ads appearing during critical usage scenarios

**Requested features**

- Add a dedicated 'C' clear button
- Provide more customization options for key layout
- Implement a history/memory function


## Frequently asked questions

### Is Big Button Calculator Pro free?

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

### Is Simple Calculator. free?

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

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

Big Button Calculator Pro is rated higher. Big Button Calculator Pro averages 4.9 out of 5 from 473 ratings, while Simple Calculator. averages 4.6 from 1.6K ratings.

### Do Big Button Calculator Pro or Simple Calculator. have ads?

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

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

Big Button Calculator Pro ships an update every 2 months, and Simple Calculator. every 3 months. Most recently, Big Button Calculator Pro was updated on October 20, 2026 and Simple Calculator. on October 22, 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.*