# One Subway vs Korea Subway Map

The clearest difference is review sentiment: One Subway at 80% against Korea Subway Map's 0%. One Subway also leads on update cadence (every 3 weeks vs every 3 months) and device support (3 vs 1). On price, ads, 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.

One Subway ships an update every 3 weeks, Korea Subway Map every 3 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | One Subway | Korea Subway Map |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **80.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Ad-supported | Ad-supported |
| Size | 220 MB | 92 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jeongwook Lee](https://appshunter.io/developer/1669951610) | [Doppel Soft](https://appshunter.io/developer/580488191) |

## 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


### Korea Subway Map

[App page](https://appshunter.io/ios/app/korea-subway-map/id6469571969)

This app offers intuitive route maps for major Korean subway systems, including Seoul, Busan, Daegu, Daejeon, and Gwangju. Easily check complex subway information with the latest maps and filter by train type. It supports multiple languages for a convenient user experience.

**Highlights:** Latest subway maps for major Korean cities, Filter by region and train type, Multi-language support, Intuitive route planning, Easy access to subway information

**Features:** 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 Korea Subway Map free?

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

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

Both One Subway and Korea Subway Map show ads.

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

One Subway ships an update every 3 weeks, and Korea Subway Map every 3 months. Most recently, One Subway was updated on October 30, 2026 and Korea Subway Map on October 24, 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.*