Comparison

Hmmsim vs Subway Simulator 2D

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Hmmsim

Experience realistic train operations on a mobile platform. This simulator offers high-quality graphics and allows users to play PC-based add-ons, providing endless route possibilities.

Highlights
  • Realistic metro operation
  • High-level graphics
  • BVE Trainsim add-on support
  • Infinite add-on customization
  • Seoulmetro Line 2 route
Features
Read full description

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.

About

Subway Simulator 2D

Experience the life of a subway train driver in a vast city metro system. Transport passengers across 21 lines and 89 stations, managing speed, signals, and stops. Unlock new lines, upgrade trains, and customize their appearance as you explore over 100 km of tracks.

Highlights
  • Explore 89 stations on 21 metro lines
  • Drive underground, overground, and underwater rails
  • Upgrade train speed, acceleration, and brakes
  • Learn real subway signaling system
  • Customize train paint
  • Realistic train and ambient sounds
Features
Read full description

Become a subway train driver and explore the whole metro system of the city (89 unique stations on 21 lines) which contains more than 100 kilometers of underground, overground, and underwater rails. Experience what it takes to be a subway train operator in this railroad driving simulation game and transport as many passengers as you can across the rapid transit system. Learn a real subway signaling system, drive the train at an appropriate speed, stop carefully at the end of each station, pick up all passengers, and get to the final station as soon as possible. There are a lot of things to do in the game. Earn coins by transporting fully animated passengers to unlock new metro lines and useful train upgrades, get huge rewards by discovering new stations, change the look of any train to your liking, study the city map to get better knowledge of the whole metro system, enjoy driving in the opposite direction, beat your time records, or just enjoy realistic sounds you have never heard in any subway simulator during driving a train. Subway Simulator 2D features: - Explore the giant city with 89 unique stations on 21 lines - Drive through 3 types of railroad (underground, overground, underwater) - Upgrade the maximal speed, acceleration, and brakes of your trains to progress faster - Upgrade your stamina to explore new areas and get closer to the final station - Learn the real subway signaling system (traffic lights) in a progressive and simple tutorial - Visit a mini paint shop to change the paint of your trains to your liking - Meet trains going in the opposite direction across the metro system - Simple game controls (power button, brake button, door button) - Real train and ambient sounds There is no time to waste, driver! Get into the cabin and enjoy driving in the Subway Simulator 2D, the biggest world of subways you have ever seen in one game!

Screenshots

Hmmsim4 screens
Subway Simulator 2D4 screens

Verdict

The call

The clearest difference is rating: Subway Simulator 2D at 4.5 against Hmmsim's 3.8. Hmmsim's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price, review sentiment, update cadence and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Subway Simulator 2D sells 2 one-off in-app purchases. Hmmsim asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Subway Simulator 2D holds the better App Store score, 4.5 against 3.8. That said, the two scores are not equally well evidenced: Hmmsim has 168 ratings behind it against 23, so its average is the more settled of the two. Written reviews point the same way: 70% of Hmmsim's written reviews are positive against 73% of Subway Simulator 2D's.

UpkeepUpdate frequency

Hmmsim ships an update every 5 months, Subway Simulator 2D every 6 months. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

Scorecard6 real differences · 4 level
Hmmsim versus Subway Simulator 2D: the parameters behind the verdict, then further details
ParameterHmmsimSubway Simulator 2D
PriceFreeFree
Rating3.8 (168 ratings)4.5 (23 ratings) — better
Positive reviews69.8% of reviews72.7% of reviews — better
Number of ratings168 — better23
Update frequencyEvery 5 months — betterEvery 6 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS7.0 — better12.4
Further details — not scored
Size211 MB124 MB
Age rating4+4+
DeveloperJemin HwangDaniel Viktorin

Customer experience

Hmmsim

All ratings168 ratings
Positive67.3%
Neutral5.4%
Negative27.4%
Written reviews301 reviews
Positive69.8%
Neutral7.6%
Negative22.6%

Subway Simulator 2D

All ratings23 ratings
Positive87.0%
Neutral0.0%
Negative13.0%
Written reviews44 reviews
Positive72.7%
Neutral6.8%
Negative20.5%

Bugs and requests

Hmmsim

Reported bugs

3 issues
  • Play button not working
  • Incompatibility with older devices
  • Incorrect speed limit warnings

Requested features

5 requests
  • 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

Subway Simulator 2D

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Hmmsim

No in-app purchases

2 purchases

Subway Simulator 2D

One-time2
  • STANDARD PACK$3.99
  • PREMIUM PACK$7.99

Questions

Is Hmmsim free?
Hmmsim is free to download, with no in-app purchases.
Is Subway Simulator 2D free?
Subway Simulator 2D is free to download, with in-app purchases available.
Which has better reviews, Hmmsim or Subway Simulator 2D?
Subway Simulator 2D is rated higher. Hmmsim averages 3.8 out of 5 from 168 ratings, while Subway Simulator 2D averages 4.5 from 23 ratings.
Do Hmmsim or Subway Simulator 2D have ads?
Subway Simulator 2D shows ads; Hmmsim does not.
Which is updated more often, Hmmsim or Subway Simulator 2D?
Hmmsim ships an update every 5 months, and Subway Simulator 2D every 6 months. Most recently, Hmmsim was updated on September 24, 2026 and Subway Simulator 2D on September 22, 2026.

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