# RedCrab Calculator vs Calculator

The clearest difference is review sentiment: RedCrab Calculator at 100% against Calculator's 0%. Calculator's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. RedCrab Calculator sells 1 one-off in-app purchase. Calculator asks for nothing beyond the download.

RedCrab Calculator ships an update fortnightly, Calculator every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | RedCrab Calculator | Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/calculator-basic-and-noads/id1551543733/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 5 MB | 23 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [少泽 梁](https://appshunter.io/developer/897112791) | [Ozhan Gorkem](https://appshunter.io/developer/1177530262) |

## 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 |


### Calculator

[App page](https://appshunter.io/ios/app/calculator-basic-and-noads/id1551543733)

Perform essential math operations like addition, subtraction, multiplication, and division without any interruptions. Save your calculations with custom titles for easy retrieval and reuse.

**Highlights:** Basic arithmetic operations, Ad-free experience, Save calculations with titles, Reuse saved calculations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RedCrab Calculator free?

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

### Is Calculator free?

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

### Do RedCrab Calculator or Calculator have ads?

RedCrab Calculator shows ads; Calculator does not.

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

RedCrab Calculator ships an update fortnightly, and Calculator every 2 weeks. Most recently, RedCrab Calculator was updated on October 24, 2026 and Calculator on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*