# Red Panic Button vs Big Button Calculator Pro

The clearest difference is review sentiment: Big Button Calculator Pro at 79% against Red Panic Button's 28%. Big Button Calculator Pro also leads on rating (4.9 vs 2.5) and in-app purchases (none vs 1). Red Panic Button's advantage is price (Free vs $9.99) and iOS requirement (13.0 vs 15.2). On update cadence and device support there is nothing between them.

Red Panic Button is free to download; Big Button Calculator Pro costs $9.99 up front. Red Panic Button sells 1 in-app purchase, starting at $0.99 per month. Big Button Calculator Pro asks for nothing beyond the download.

Big Button Calculator Pro holds the better App Store score, 4.9 against 2.5. That said, the two scores are not equally well evidenced: Big Button Calculator Pro has 463 ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 28% of Red Panic Button's written reviews are positive against 79% of Big Button Calculator Pro's.

Red Panic Button ships an update every 5 weeks, Big Button Calculator Pro every 2 months. The most recent releases landed on August 26, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Red Panic Button | Big Button Calculator Pro |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | [2.5 (17 ratings)](https://appshunter.io/ios/app/red-panic-button/id422029296/reviews) | **[4.9 (463 ratings)](https://appshunter.io/ios/app/big-button-calculator-pro/id1131056963/reviews)** |
| Number of ratings | 17 | **463** |
| Positive reviews | 28.2% of reviews | **78.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | — | **#181** |
| Size | 63 MB | 27 MB |
| Requires iOS | **13.0** | 15.2 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ULTIMATE COMMUNICATION SOFTWARE LTD](https://appshunter.io/developer/422029299) | [Cider Software LLC](https://appshunter.io/developer/465180756) |

## What reviewers say

### Red Panic Button

[App page](https://appshunter.io/ios/app/red-panic-button/id422029296)

This app provides a one-touch solution for emergencies. Upon activation, it sends your location and a customizable alert message via SMS or email to pre-set contacts. It also offers features like voice recording and emergency number dialing.

**Highlights:** Send Panic SMS, Send Panic Email, Record voice message, Customizable alert text, Emergency Number feature, Works with Apple Watch

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Single User Full Version | $0.99 | per month |


### Big Button Calculator Pro

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

**Currently charting:** #181 Top Paid · Utilities (US App Store)

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 Red Panic Button free?

Red Panic Button 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, Red Panic Button or Big Button Calculator Pro?

Big Button Calculator Pro is rated higher. Red Panic Button averages 2.5 out of 5 from 17 ratings, while Big Button Calculator Pro averages 4.9 from 463 ratings.

### Do Red Panic Button or Big Button Calculator Pro have ads?

Red Panic Button shows ads; Big Button Calculator Pro does not.

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

Red Panic Button ships an update every 5 weeks, and Big Button Calculator Pro every 2 months. Most recently, Red Panic Button was updated on August 26, 2026 and Big Button Calculator Pro on September 19, 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.*