# 小灵龙App vs Pool Chem Calculator

The clearest difference is rating: Pool Chem Calculator at 4.3 against 小灵龙App's 1.0. Pool Chem Calculator also leads on update cadence (every 6 days vs monthly) and ratings volume (36 vs 12). 小灵龙App's advantage is in-app purchases (none vs 1) and iOS requirement (9.0 vs 16.6). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Pool Chem Calculator sells 1 in-app purchase, starting at $1.99 per month. 小灵龙App asks for nothing beyond the download.

Pool Chem Calculator holds the better App Store score, 4.3 against 1.0. Both are backed by a comparable volume of ratings — 12 and 36 respectively. Written reviews point the same way: 33% of 小灵龙App's written reviews are positive against 36% of Pool Chem Calculator's.

小灵龙App ships an update monthly, Pool Chem Calculator every 6 days. The most recent releases landed on September 27, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | 小灵龙App | Pool Chem Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (12 ratings)](https://appshunter.io/ios/app/app/id1221738240/reviews) | **[4.3 (36 ratings)](https://appshunter.io/ios/app/pool-chem-calculator/id1453351222/reviews)** |
| Number of ratings | 12 | **36** |
| Positive reviews | 33.3% of reviews | **36.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 157 MB | 113 MB |
| Requires iOS | **9.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [北京新中新诚通信息技术股份有限公司](https://appshunter.io/developer/736575065) | [Gunter Business Solutions Inc](https://appshunter.io/developer/1453351221) |

## What reviewers say

### 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


### Pool Chem Calculator

[App page](https://appshunter.io/ios/app/pool-chem-calculator/id1453351222)

This app helps manage pool chemistry with 24 specialized calculators for dosing, pH, and more. It features a customizable maintenance calendar, equipment tracking, and easy report sharing for up to 100 pools. Ideal for maintaining a clean and swim-ready pool.

**Highlights:** 24 precision pool chemical calculators, Customizable maintenance calendar with notifications, Equipment tracking and management, Multi-user pool sharing, Professional report builder, Smart pool route mapping

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Pool Subscription | $1.99 | per month |


## Frequently asked questions

### Is 小灵龙App free?

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

### Is Pool Chem Calculator free?

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

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

Pool Chem Calculator is rated higher. 小灵龙App averages 1.0 out of 5 from 12 ratings, while Pool Chem Calculator averages 4.3 from 36 ratings.

### Do 小灵龙App or Pool Chem Calculator have ads?

Both 小灵龙App and Pool Chem Calculator show ads.

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

小灵龙App ships an update monthly, and Pool Chem Calculator every 6 days. Most recently, 小灵龙App was updated on September 27, 2026 and Pool Chem Calculator on September 18, 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.*