# Train Clock vs DoorSim

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.

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.

## The numbers

| Metric | Train Clock | DoorSim |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (2 ratings)](https://appshunter.io/ios/app/doorsim-train-door-sim/id1518824488/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 23 months | **Every 8 months** |
| Monetization | — | Free with in-app purchases |
| Size | 143 MB | 73 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [hiroyuki uchida](https://appshunter.io/developer/669938829) | [Hiromi Hakozaki](https://appshunter.io/developer/1626441902) |

## What reviewers say

### Train Clock

[App page](https://appshunter.io/ios/app/train-clock/id1097870845)

**In-app purchases:** none


### DoorSim

[App page](https://appshunter.io/ios/app/doorsim-train-door-sim/id1518824488)

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.

**Highlights:** Operate train doors, Simulate conductor role, Use model trains, Intercom buzzer sound

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-Free Play | $1.99 | one-time |


## Frequently asked questions

### Is Train Clock free?

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

### Is DoorSim free?

DoorSim is free to download, with in-app purchases available.

### Do Train Clock or DoorSim have ads?

DoorSim shows ads; Train Clock does not.

### Which is updated more often, Train Clock or DoorSim?

Train Clock ships an update every 23 months, and DoorSim every 8 months. Most recently, Train Clock was updated on October 26, 2026 and DoorSim on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*