Hmmsim Legacy
by Jemin Hwang
- Games
- Paid
- Small & simple · 89
- Rating
- 4.5
- 109 ratings · US storefront
- Top 91%among 177 Games apps
- Last update
- Aug 11, 2026
- Version 2.0.7
- Size
- 376 MB
- Category
- Games
- Tracked since
- Oct 10, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
Hmmsim 2 has been reborn with Unreal Engine.
With dynamic sky, shadows, and headlight effects, it delivers more realistic scenery and atmosphere.
Hmmsim Legacy includes built-in routes based on Seoul Subway Lines 2 and 7, recreated with top-quality graphics.
Experience subway operations firsthand.
In addition, Hmmsim Legacy supports BVE Trainsim Add-Ons.
You can enjoy the same BVE routes you played on PC directly on mobile devices.
Expand your experience endlessly with Add-Ons tailored to your preferences.
What’s new
Release notes for the latest version, as written by the developer.
- Optimized performance.
- Fixed an issue where the distance between cars would increase on the default map.
Rank history
Daily position in the South Korea charts. #1 is at the top.
- Best rank
- #2
- Current rank
- #2
- Days charting
- 7 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
89/100
Small & simple
- Developer size70% · 25
Developer: 2 apps on the charts
- Audience size100% · 20
Ratings: 109
- App size60% · 10
Size: 376 MB
- Price model100% · 15
Price model: paid
- Demand proof100% · 30
Best rank #2, 28 countries
An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2
How the score worksVersion history
- 2.0.7LatestReleased Aug 11, 2026