# 常州地铁Metro vs DouOS

The clearest difference is rating: DouOS at 5.0 against 常州地铁Metro's 2.7. 常州地铁Metro's advantage is monetization model (free vs free with in-app purchases) and ratings volume (7 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

DouOS holds the better App Store score, 5.0 against 2.7. That said, the two scores are not equally well evidenced: 常州地铁Metro has 7 ratings behind it against 1, so its average is the more settled of the two.

常州地铁Metro ships an update every 2 months, DouOS every 6 weeks. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 常州地铁Metro | DouOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (7 ratings)](https://appshunter.io/ios/app/metro/id1474201266/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/douos/id6773022070/reviews)** |
| Number of ratings | **7** | 1 |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 160 MB | 68 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, Mac |
| Age rating | 4+ | 17+ |
| Developer | [Bwton Technology Co., Ltd.](https://appshunter.io/developer/1213366119) | [晓晗 宿](https://appshunter.io/developer/1868332765) |

## What reviewers say

### 常州地铁Metro

[App page](https://appshunter.io/ios/app/metro/id1474201266)

This official transit app provides real-time information for Changzhou Metro. It allows users to pay fares with a QR code, navigate stations, and check train schedules. The app also offers convenient services like lost and found.

**Highlights:** QR code ticketing, Metro navigation, Station information, First and last train times, Lost and found services

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### DouOS

[App page](https://appshunter.io/ios/app/douos/id6773022070)

An AI friend that chats with you, remembers important details, and helps organize your thoughts and inspirations. It's designed to be a companion rather than a tool, offering a conversational experience for daily reflections and ideas.

**Highlights:** Conversational AI chat, Remembers user preferences and states, Organizes conversations, inspirations, and emotions, Supports voice, images, files, and stickers, User-controlled data management, Long-term companionship

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 常州地铁Metro free?

常州地铁Metro is free to download, with no in-app purchases.

### Is DouOS free?

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

### Which has better reviews, 常州地铁Metro or DouOS?

DouOS is rated higher. 常州地铁Metro averages 2.7 out of 5 from 7 ratings, while DouOS averages 5.0 from 1 ratings.

### Do 常州地铁Metro or DouOS have ads?

Neither 常州地铁Metro nor DouOS shows ads.

### Which is updated more often, 常州地铁Metro or DouOS?

常州地铁Metro ships an update every 2 months, and DouOS every 6 weeks. Most recently, 常州地铁Metro was updated on October 9, 2026 and DouOS on October 10, 2026.

---

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