Train simulation game Hmmsim has become new and diverse!

In Hmmsim 2, advanced graphics, new map, outer view of train, dynamic trains and scoring mode has been added.
Also, the performance in BVE Add-On operation has been upgraded, and animation file and doppler sound is available.

Hmmsim 2 features basic routes based on Seoul Subway Line 2 and Line 7, realized in the highest level of graphic.
Experience the metro operation.

Also, Hmmsim 2 can add BVE Trainsim Add-Ons.
In Hmmsim 2, you can play BVE routes as the same which you used to do in your PC.
You can infinitely add Add-Ons depending on your preference.

See for details.

What’s New

Version 1.2.7

This app has been updated by Apple to display the Apple Watch app icon.

- Added Tutorial
- Added Japanese language
- Fixed Diagram bug

Ratings and Reviews

4.5 out of 5
88 Ratings

88 Ratings

Close, crash. ,

The Best Train Sim Out There, But BVE Addons And Conversions Make Some Bugs

I cannot stress how awesome the graphics are on the default lines 2 and 7, and even most of the BVE add on route graphic look so much better than even the actual BVE on PC! But, there are a few slight problems when it comes to converting to Hmmsim 2 format. Firstly, a lot of transparency seems to go away even with the use of SetDecalTransparentColor. This causes the converted trains (especially on New York lines) to have unnecessary opaque textures, making the train look odd. Next, sometimes the ground sticks into the tracks on some lines, I don’t know the cause. Finally, signals on converted routes don’t seem to load properly, as I usually get an oversized rectangle, also possibly due to the transparency issue. Aside from all of these minor issues, this is the absolute best train sim to use BVE addons, even the best mobile train sim ever, period!

Edit: I forgot to say how simple it is to convert from BVE to Hmmsim! It is so easy, even with iOS! Just download the converter on your website, and transfer the converted .zip file on to your phone!

Parched and penniless ,


This is a great train simulator game, and it is so fun. I have a few suggestions, though. First, can you add a cab view? I would like it more if you did that. Second, can you add the ability to do a round trip? Third, can you add AI trains on both directions, so that there is train traffic? Fourth, I feel like it should be easier to convert bve routes and trains. Finally, maybe you can add a couple more metro lines to choose from, maybe other countries’ train lines. These are just suggestions to make the game better, but the game is still fun anyway.

camcan1234 ,


I love the game a lot but I would like to see added is to maybe make it more Easter to add routes because it is very hard for me to add routes like maybe have a shop where you get conies to buy routes or make something because it is hard

App Privacy

The developer, Jemin Hwang, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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