# Hmmsim Legacy vs SenSim

The clearest difference is price: SenSim at Free against Hmmsim Legacy's $1.99. SenSim also leads on iOS requirement (10.0 vs 17.0). Hmmsim Legacy's advantage is ads (none vs shown) and rating (4.5 vs 4.2). On ratings volume, in-app purchases and device support there is nothing between them.

SenSim is free to download; Hmmsim Legacy costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Hmmsim Legacy holds the better App Store score, 4.5 against 4.2. Both are backed by a comparable volume of ratings — 109 and 38 respectively. Written reviews point the same way: 77% of Hmmsim Legacy's written reviews are positive against 67% of SenSim's.

Hmmsim Legacy ships an update fortnightly, SenSim every 2 months. Both last shipped on November 6, 2026.

## The numbers

| Metric | Hmmsim Legacy | SenSim |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.5 (109 ratings)](https://appshunter.io/ios/app/hmmsim-legacy/id1000884506/reviews)** | [4.2 (38 ratings)](https://appshunter.io/ios/app/sensim-train-simulator/id1390241909/reviews) |
| Number of ratings | **109** | 38 |
| Positive reviews | **76.6% of reviews** | 67.3% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | **Free** | Ad-supported |
| Best chart rank | **#84** | — |
| Size | 359 MB | 207 MB |
| Requires iOS | 17.0 | **10.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jemin Hwang](https://appshunter.io/developer/863234167) | [Hisashi Tsukui](https://appshunter.io/developer/1390241908) |

## What reviewers say

### Hmmsim Legacy

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

**Currently charting:** #84 Top Paid · Racing (US App Store)

Experience realistic train simulation with advanced graphics and new features. Drive on detailed subway routes and operate trains with dynamic elements. Expand your gameplay by adding custom content from PC simulators.

**Highlights:** Advanced graphics, New map and outer view, Dynamic trains, Scoring mode, BVE Add-On operation upgrade, Seoul Subway Line 2 & 7 routes

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

**In-app purchases:** none

**What reviewers like**

- 🎨 Excellent graphics and visual detail
- 🚂 Realistic train simulation mechanics
- 📱 Works well on mobile devices
- 🎮 Engaging gameplay experience
- 🔧 Supports BVE add-ons and route conversion

**What reviewers complain about**

- 😤 Extremely difficult add-on installation process
- 📦 Limited default routes (only 2 included)
- 👥 No passenger simulation
- 🚪 Missing platform screen doors
- 🪟 No interior cabin view

**Reported bugs**

- Cannot download MTA routes on iPhone
- Routes fail to appear after app restart on iOS
- Add-ons not loading properly on iOS devices
- Transparency issues in converted BVE routes
- Ground clipping through tracks on some routes

**Requested features**

- Add more Seoul subway lines (Lines 1, 3, 4, 5, 6, 8, 9)
- Implement passenger boarding/alighting simulation
- Add interior cabin view with controls
- Include platform screen doors
- Add express service routes


### SenSim

[App page](https://appshunter.io/ios/app/sensim-train-simulator/id1390241909)

Experience realistic train driving with a focus on precision. Control speed, time, and stopping points to simulate actual train operations. This simulation prioritizes authenticity over dramatic events.

**Highlights:** Realistic train driving simulation, Focus on speed, time, and stop position, Authentic operational experience, No flashy accidents or crashes, External route data available

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Hmmsim Legacy free?

Hmmsim Legacy costs $1.99, with no in-app purchases.

### Is SenSim free?

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

### Which has better reviews, Hmmsim Legacy or SenSim?

Hmmsim Legacy is rated higher. Hmmsim Legacy averages 4.5 out of 5 from 109 ratings, while SenSim averages 4.2 from 38 ratings.

### Do Hmmsim Legacy or SenSim have ads?

SenSim shows ads; Hmmsim Legacy does not.

### Which is updated more often, Hmmsim Legacy or SenSim?

Hmmsim Legacy ships an update fortnightly, and SenSim every 2 months. Most recently, Hmmsim Legacy was updated on November 6, 2026 and SenSim on November 6, 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.*