# One Subway vs Seoul Subway Map

The clearest difference is update cadence: Seoul Subway Map at every 5 days against One Subway's every 3 weeks. One Subway's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

One Subway ships an update every 3 weeks, Seoul Subway Map every 5 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | One Subway | Seoul Subway Map |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Ad-supported | — |
| Size | 221 MB | 48 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jeongwook Lee](https://appshunter.io/developer/1669951610) | [SY KHANH HO](https://appshunter.io/developer/1851698856) |

## What reviewers say

### One Subway

[App page](https://appshunter.io/ios/app/one-subway/id1669951608)

Access real-time subway information, including timetables and live train locations across major Korean cities. Plan your fastest routes, view station details, and find nearby bike rentals.

**Highlights:** Subway map images for major Korean cities, Subway timetables, Route navigation with fastest path, Real-time subway location tracking, Station exit and facility information, Ttareungi bicycle info near Seoul stations

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

**In-app purchases:** none


### Seoul Subway Map

[App page](https://appshunter.io/ios/app/seoul-subway-map/id6807264598)

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

**In-app purchases:** none


## Frequently asked questions

### Is One Subway free?

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

### Is Seoul Subway Map free?

Seoul Subway Map is free to download, with no in-app purchases.

### Do One Subway or Seoul Subway Map have ads?

Both One Subway and Seoul Subway Map show ads.

### Which is updated more often, One Subway or Seoul Subway Map?

One Subway ships an update every 3 weeks, and Seoul Subway Map every 5 days. Most recently, One Subway was updated on November 7, 2026 and Seoul Subway Map on October 31, 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.*