# Trraxx vs Momentous Clock

The clearest difference is update cadence: Momentous Clock at every 6 days against Trraxx's every 27 months. Trraxx's advantage is iOS requirement (12.0 vs 15.1). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Trraxx against 5.0 for Momentous Clock. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

Trraxx ships an update every 27 months, Momentous Clock every 6 days. Both last shipped on November 3, 2026.

## The numbers

| Metric | Trraxx | Momentous Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/trraxx/id1531267704/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/momentous-clock/id1608715857/reviews) |
| Number of ratings | **4** | 2 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 6 days** |
| Monetization | Free | Free |
| Size | 20 MB | 24 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HALL OF FAME](https://appshunter.io/developer/1462364662) | [Tutukain Software, LLC](https://appshunter.io/developer/1608715859) |

## What reviewers say

### Trraxx

[App page](https://appshunter.io/ios/app/trraxx/id1531267704)

Receive real-time alerts for blocked train crossings. This community-driven app relies on user updates to inform others about train traffic. Favorite specific crossings to stay informed about your regular routes.

**Highlights:** Train crossing notifications, User-reported status updates, Favorite crossing management, Push notification alerts, Community-driven data

**In-app purchases:** none


### Momentous Clock

[App page](https://appshunter.io/ios/app/momentous-clock/id1608715857)

This app transforms your device's clock into a dynamic display of mathematical properties and number theory facts for the current time. It optionally reveals personal number connections from your contacts, all processed securely on your device.

**Highlights:** Computes mathematical properties of time, Surfaces number theory facts, Displays time on 16-segment LED screens, Finds personal number connections in contacts, On-device contact matching, Works via Catalyst on Mac

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Trraxx free?

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

### Is Momentous Clock free?

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

### Which has better reviews, Trraxx or Momentous Clock?

Trraxx and Momentous Clock are both rated 5.0 out of 5 on the App Store, from 4 and 2 ratings respectively.

### Do Trraxx or Momentous Clock have ads?

Neither Trraxx nor Momentous Clock shows ads.

### Which is updated more often, Trraxx or Momentous Clock?

Trraxx ships an update every 27 months, and Momentous Clock every 6 days. Most recently, Trraxx was updated on November 3, 2026 and Momentous Clock on November 3, 2026.

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