# RedCrab Calculator vs Flip Timer Clock

The clearest difference is in-app purchases: Flip Timer Clock at none against RedCrab Calculator's 1. Flip Timer Clock also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.6). On price and device support there is nothing between them.

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

## The numbers

| Metric | RedCrab Calculator | Flip Timer Clock |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | — |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 8 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [少泽 梁](https://appshunter.io/developer/897112791) | [Hebei Hanyue Technology Co., Ltd.](https://appshunter.io/developer/1524038411) |

## 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 |


### Flip Timer Clock

[App page](https://appshunter.io/ios/app/flip-timer-clock/id6714470951)

**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 Flip Timer Clock free?

Flip Timer Clock is free to download, with no in-app purchases.

### Do RedCrab Calculator or Flip Timer Clock have ads?

RedCrab Calculator shows ads; Flip Timer Clock does not.

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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.*