# Calculator∫ vs 小灵龙App

The clearest difference is review sentiment: Calculator∫ at 84% against 小灵龙App's 33%. Calculator∫ also leads on rating (4.6 vs 1.0) and ads (none vs shown). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Calculator∫ holds the better App Store score, 4.6 against 1.0. Both are backed by a comparable volume of ratings — 7 and 12 respectively. Written reviews point the same way: 84% of Calculator∫'s written reviews are positive against 33% of 小灵龙App's.

Calculator∫ ships an update weekly, 小灵龙App monthly. The most recent releases landed on August 13, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Calculator∫ | 小灵龙App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (7 ratings)](https://appshunter.io/ios/app/calculator/id635938472/reviews)** | [1.0 (12 ratings)](https://appshunter.io/ios/app/app/id1221738240/reviews) |
| Number of ratings | 7 | **12** |
| Positive reviews | **83.8% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free | Free |
| Size | 1 MB | 157 MB |
| Requires iOS | **4.3** | 9.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [7th Gear](https://appshunter.io/developer/321178305) | [北京新中新诚通信息技术股份有限公司](https://appshunter.io/developer/736575065) |

## What reviewers say

### Calculator∫

[App page](https://appshunter.io/ios/app/calculator/id635938472)

Perform calculations quickly and accurately with large buttons. Personalize the interface by selecting custom background and text colors. This straightforward utility is designed for intuitive use.

**Highlights:** Large buttons for easy input, Accurate calculations, Customizable background colors, Customizable text colors, Intuitive user interface

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

**In-app purchases:** none


### 小灵龙App

[App page](https://appshunter.io/ios/app/app/id1221738240)

This app provides comprehensive mobile services for campus cards, including traditional card functions like consumption and authentication, enhanced with QR code capabilities. It offers features for managing your campus card, paying various campus fees, and booking campus facilities.

**Highlights:** Campus card management, QR code functionality, Campus fee payments, Facility booking, Card application and registration

**In-app purchases:** none


## Frequently asked questions

### Is Calculator∫ free?

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

### Is 小灵龙App free?

小灵龙App is free to download, with no in-app purchases.

### Which has better reviews, Calculator∫ or 小灵龙App?

Calculator∫ is rated higher. Calculator∫ averages 4.6 out of 5 from 7 ratings, while 小灵龙App averages 1.0 from 12 ratings.

### Do Calculator∫ or 小灵龙App have ads?

小灵龙App shows ads; Calculator∫ does not.

### Which is updated more often, Calculator∫ or 小灵龙App?

Calculator∫ ships an update weekly, and 小灵龙App monthly. Most recently, Calculator∫ was updated on August 13, 2026 and 小灵龙App on October 1, 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.*