Train Clock vs DoorSim
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Train Clock
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This is an app that helps you learn how to read a clock. The minute hand is a Shinkansen, the hour hand is a conventional train, and the second hand is a steam locomotive. The trains are displayed randomly. When you tap the Shinkansen icon at the bottom of the screen, the Shinkansen used as the minute hand changes to another Shinkansen. When you tap the conventional train icon, the train used as the hour hand transforms into another train. At the top of the screen, trains stop at a station at random. Every two minutes, a train departs.
DoorSim
Operate subway or train doors with simple "Open" and "Close" buttons. Experience the role of a train conductor or driver. Play with model trains for added realism and use the buzzer button for intercom sounds.
- Operate train doors
- Simulate conductor role
- Use model trains
- Intercom buzzer sound
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Press the “Open” button to open the doors, and the “Close” button to close them. Experience what it’s like to be a train conductor or driver by operating subway or train doors! Play together with your model trains for extra realism! Press the buzzer button to hear the intercom buzzer sound.
Screenshots
Verdict
The clearest difference is in-app purchases: Train Clock at none against DoorSim's 1. Train Clock also leads on ads (none vs shown). DoorSim's advantage is update cadence (every 8 months vs every 23 months). On price, device support and iOS requirement 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
Both are free to download. DoorSim sells 1 one-off in-app purchase. Train Clock asks for nothing beyond the download.
Train Clock ships an update every 23 months, DoorSim every 8 months. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.
| Parameter | Train Clock | DoorSim |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (2 ratings) — better |
| Positive reviews | — | 66.7% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 23 months | Every 8 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 143 MB | 73 MB |
| Age rating | 4+ | 17+ |
| Developer | hiroyuki uchida | Hiromi Hakozaki |
In-app purchases
Train Clock
No in-app purchases
DoorSim
- Ad-Free Play$1.99
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