# Fast Clock

> Model railroad fast clock simulator with custom branding and external sync. (iPhone/iPad app by Kevin Snow.)

- Source: https://appshunter.io/ios/app/fast-clock/id6448879724 (this page in markdown: same URL + `.md`)
- Developer: [Kevin Snow](https://appshunter.io/developer/305581830)
- Category: Utilities
- Price: Free
- Rating: 3.80/5 from 5 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 5 MB
- Languages: American English
- Released: 2023-08-31
- Data updated: 2026-09-06
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/fast-clock/id6448879724/reviews.md

## What is Fast Clock?

A model railroad fast clock app

Supports custom logos
Supports custom maps
Can read time from JMRI, the built-in fast clock, or real time

## Key features

- Model railroad fast clock simulation
- Custom logo support
- Custom map integration
- JMRI time synchronization
- Real-time clock option

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/fast-clock/id6448879724/reviews.md

### 3/5 — Need to be able to link to watch

*2025-11-22*

You need to be able to link this to a smart watch. Thanks.

### 3/5 — Looks good

*2025-01-25*

Took me awhile to figure how to make it work. (Use the IP address used in the JMRI web server without the port number. Wish there was a way to prevent the devices from going to sleep and then having to reconnect after waking the device up. This looks like a simple way to have fast clocks synchronized around the layout.

### 3/5 — Won’t work w/iPhone SE

*2024-06-29*

Can’t activate fastclock. “Start fastclock” button on settings page falls outside of SE screen proportions.
Scroll needed.
This is a fine basic app for TTTO. Map page is good to have for station locations and tracking route on unfamiliar layouts.
Highly suggest ability to link to Apple Watch for at a glance time reference when OS-ing.

### 5/5 — Helps with my hyperfocus

*2024-01-17*

Hi

## Frequently asked questions about Fast Clock

### What is Fast Clock used for?

Fast Clock is a utility app designed to simulate a fast clock for model railroad layouts. It helps synchronize time for operational scenarios on your model railway.

### Can Fast Clock be customized?

Yes, Fast Clock supports custom logos and custom maps, allowing you to personalize the interface to match your model railroad theme.

### Does Fast Clock work with JMRI?

Yes, Fast Clock can read time directly from JMRI, a popular software for model railroad control, ensuring accurate synchronization.

### What devices does Fast Clock support?

Fast Clock is available for iPhone and iPod devices.

### Is Fast Clock free to use?

Yes, Fast Clock is completely free to download and use, with no in-app purchases or advertisements.

### What is the age rating for Fast Clock?

Fast Clock has an age rating of 4+, making it suitable for a wide range of users.

### How often is Fast Clock updated?

Fast Clock was last updated on August 31, 2023, with version 1.0. Further updates will depend on developer plans.

### Does Fast Clock have ads?

No, Fast Clock is ad-free, providing an uninterrupted experience for users.

## Version history (last 4 releases)

### 1.3 (23) — 2026-08-27

Improved SE experience.  
Fixed small screen issues.

### 1.2 (17) — 2026-08-25

Added a Speedometer view to calculate scale speeds.

Other internal fixes not visible to the user and deprecations.

### 1.1 (8) — 2026-08-23

Fixed a bug on settings page causing it to not load correctly.

### 1.0 — 2023-08-31

No release notes.

## Related topics

[model train clock](https://appshunter.io/ios/topics/model-train-clock)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-06.*