# RedCrab Calculator vs iPocket Calculator

The clearest difference is ads: iPocket Calculator at none against RedCrab Calculator's shown. RedCrab Calculator's advantage is update cadence (fortnightly vs every 10 months) and iOS requirement (15.6 vs 17.0). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. RedCrab Calculator sells 1 one-off in-app purchase and iPocket Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

RedCrab Calculator ships an update fortnightly, iPocket Calculator every 10 months. The most recent releases landed on October 15, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | RedCrab Calculator | iPocket Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (4 ratings)](https://appshunter.io/ios/app/ipocket-calculator/id6445945819/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 10 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 5 MB | 24 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [少泽 梁](https://appshunter.io/developer/897112791) | [Mahmoud Suliman](https://appshunter.io/developer/571829037) |

## What reviewers say

### RedCrab Calculator

[App page](https://appshunter.io/ios/app/redcrab-calculator/id947845140)

This powerful scientific calculator offers a modern UI and robust engine for users of all levels. It handles basic arithmetic to complex engineering equations with smart expression parsing and a high-precision display. Enjoy a seamless calculation experience with features like history recall and dark mode.

**Highlights:** Basic & Advanced Calculations, Smart Expression Parsing, Calculation History & Reuse, High-Precision Display, Dark Mode & Modern UI, VIP Ad-Free Experience

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 终身会员 | $1.99 | one-time |


### iPocket Calculator

[App page](https://appshunter.io/ios/app/ipocket-calculator/id6445945819)

This app provides a fast and intuitive interface for basic and advanced calculations. Users can personalize the look with customizable themes and colors for a tailored experience. Enjoy smooth, user-friendly operation and quick, reliable results on the go.

**Highlights:** Customizable themes, Sleek and modern interface, Fast calculations, User-friendly experience, Share or print results

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Features | $1.99 | one-time |


## Frequently asked questions

### Is RedCrab Calculator free?

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

### Is iPocket Calculator free?

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

### Do RedCrab Calculator or iPocket Calculator have ads?

RedCrab Calculator shows ads; iPocket Calculator does not.

### Which is updated more often, RedCrab Calculator or iPocket Calculator?

RedCrab Calculator ships an update fortnightly, and iPocket Calculator every 10 months. Most recently, RedCrab Calculator was updated on October 15, 2026 and iPocket Calculator on October 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.*