# Hmmsim - Train Simulator

> Realistic mobile train simulator with PC add-on compatibility. (iPhone/iPad app by Jemin Hwang.)

- Source: https://appshunter.io/ios/app/hmmsim-train-simulator/id863234164 (this page in markdown: same URL + `.md`)
- Developer: [Jemin Hwang](https://appshunter.io/developer/863234167)
- Category: Games, Racing, Simulation
- Price: Free
- Rating: 3.80/5 from 168 App Store ratings · 301 written reviews indexed
- Age rating: 4+
- Requires: iOS 7.0 · 211 MB
- Languages: American English
- Released: 2014-07-28
- Data updated: 2026-09-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/hmmsim-train-simulator/id863234164/reviews.md

## What is Hmmsim?

Hmmsim, the first Train Simulation game ever built in Korea, has been realized in mobile.
Hmmsim features basic route based on Seoulmetro Line 2, realized in the highest level of graphic.
Experience the metro operation.

Also, for the first time in mobile Train Simulation game, Hmmsim can add BVE Trainsim Add-Ons.
In Hmmsim, you can play BVE routes as the same
which you used to do in your PC.

This is the first mobile Train Simulator that
you can infinitely add Add-Ons depending on your preference.

See www.jeminie.net for details.

## Key features

- Realistic metro operation
- High-level graphics
- BVE Trainsim add-on support
- Infinite add-on customization
- Seoulmetro Line 2 route

## What do users think of Hmmsim?

Overall sentiment: positive

**Pros**

- 👍 Great graphics
- 🚀 Realistic sounds and movement
- 💡 Ability to add BVE addons
- 🔒 Detailed and polished app

**Cons**

- 🐛 Crashes and freezes
- 🔋 Difficulty adding routes
- 💡 Need for more camera views
- 💡 Lack of passenger/other train features

**Commonly reported bugs**

- Play button not working
- Incompatibility with older devices
- Incorrect speed limit warnings

**Most requested features**

- More routes and lines
- Ability to select different trains
- Scoring system based on timetable
- In-app route/addon downloads
- Loop the track for longer gameplay

## Recent user reviews (10 of 301)

All indexed reviews: https://appshunter.io/ios/app/hmmsim-train-simulator/id863234164/reviews.md

### 4/5 — 노선

*2026-08-29, version 1.1.3*

다른 노선들도 추가해주세요

### 3/5 — 地铁

*2026-08-11*

虽然还是很不错的，但是建议把地铁线路增多一些而且一个地铁就几站太没意思了

### 5/5 — 虽然是第一代尽量能移动一些看到车厢内部

*2026-08-10*

就是没有路过的列车

### 5/5 — 좋은 게임

*2026-08-02*

10년이 지난 게임인 듯 한데 재밌네요. 2호선 밖에 없는 것 빼면 광고도 없어서 좋습니다

### 5/5 — Not much but fun and zen

*2026-07-27, version 1.1.3*

It was really fun playing, and there is no goal or mission. This is a positive for me because it’s very laid back and enjoyable to just stop and go again.

### 4/5 — Great game, changes needed

*2026-07-21, version 1.1.3*

The game is great and i love the bve route compatability but you can only get a limited amount of routes converted for the game from online, as the converter link is broken so please upload a new link for the bve to hmmsim converter, and if that is added them it would be 5 stars.

### 4/5 — Fine but idk how to get the MTA and NNRT

*2026-07-15, version 1.1.3*

I like the game and my favorite Trainsit rail is Nanning Rail Trainsit and Metropolitan Trainsit Athuory and I had to watch like 5 toturials to get it

### 5/5 — 非常好玩

*2026-07-05*

我从来没有在苹果商店里见过这么好的游戏，

### 1/5 — Terrible…

*2026-06-23, version 1.1.3*

THIS IS TERRIBLE, LIKE ONLY 1 LINE??!! ADD MORE LINES EXAMPLE TTC, GO TRANSIT, U.P. EXPRESS LONDON SUBWAY!! 1 star

### 1/5 — 개선좀 해주세요.

*2026-05-10*

업데이트가 10년전이네요. 8호선도 별내까지 연장했는데,“암사 방면이나 모란 방면으로 가실…”로 나옵니다. 무튼 업데이트좀 해주시고요. 그리고 노선이 하나인데다 너무 짧아요.
서울2호선 딱 성수~삼성 구간은 너무 짧아요. 2호선 전구간도 아니고.. 심지어 Ktx,일반열차 같은 다른 노선도 없는게 아쉽습니다. 
제 리뷰 꼭 잃어주셨으면 합니다.

## Frequently asked questions about Hmmsim

### What is Hmmsim - Train Simulator?

Hmmsim is a mobile train simulation game that offers a realistic metro operation experience. It features high-quality graphics and is the first of its kind in Korea.

### Can I play PC train simulation add-ons on this app?

Yes, for the first time in a mobile train simulator, Hmmsim allows you to play BVE Trainsim add-ons. This means you can enjoy PC routes on your mobile device.

### Is this app free to download and play?

Based on the provided information, the app is free to download and play. There are no mentions of in-app purchases or advertisements.

### What kind of routes can I expect to play?

The app features a basic route based on Seoulmetro Line 2 with high-level graphics. Additionally, you can infinitely add BVE Trainsim add-ons, allowing for a vast variety of routes depending on your preferences.

### Where can I find more information about adding custom routes?

For details on how to add BVE Trainsim add-ons and explore more routes, please visit www.jeminie.net. This website provides further information for users.

## Version history (last 3 releases)

### 1.1.3 — 2015-06-23

This update from Apple will improve the functionality of this app. No new features are included.

New Hmmsim has been released.

### 1.1.1 — 2014-09-08

You can add BVE Add-Ons.
For more details, please refer to Add-On menu in www.jeminie.net

1. Make sure that you can see Error list easily
2. Get rid of iOS version exit menu
3. Correct forced termination when creating Cube, Cylinder
4. Correct comment bug in Route meter command

### 1.1.0 — 2014-07-28

No release notes.

## Apps similar to Hmmsim

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| --- | --- | --- | --- |
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## More apps by Jemin Hwang

- [Hmmsim Legacy](https://appshunter.io/ios/app/hmmsim-legacy/id1000884506)

All apps by Jemin Hwang: https://appshunter.io/developer/863234167

## Related topics

[hmmsim](https://appshunter.io/ios/topics/hmmsim) · [jemin hwang](https://appshunter.io/ios/topics/jemin-hwang) · [hmmsim 2](https://appshunter.io/ios/topics/hmmsim-2) · [hmmsim legacy](https://appshunter.io/ios/topics/hmmsim-legacy) · [metro simulator](https://appshunter.io/ios/topics/metro-simulator) · [paris metro simulator](https://appshunter.io/ios/topics/paris-metro-simulator) · [unet enterprise banking](https://appshunter.io/ios/topics/unet-enterprise-banking)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-04.*