# ClockTron vs Momentous Clock

ClockTron and Momentous Clock are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

ClockTron ships an update every 2 weeks, Momentous Clock every 6 days. The most recent releases landed on September 17, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | ClockTron | Momentous Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/momentous-clock/id1608715857/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 6 days** |
| Monetization | — | Free |
| Size | 16 MB | 24 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SchoolTron inc](https://appshunter.io/developer/1149074994) | [Tutukain Software, LLC](https://appshunter.io/developer/1608715859) |

## What reviewers say

### ClockTron

[App page](https://appshunter.io/ios/app/clocktron/id1542222848)

**Features:** macOS Compatibility

**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 ClockTron free?

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

### Is Momentous Clock free?

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

### Do ClockTron or Momentous Clock have ads?

Neither ClockTron nor Momentous Clock shows ads.

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

ClockTron ships an update every 2 weeks, and Momentous Clock every 6 days. Most recently, ClockTron was updated on September 17, 2026 and Momentous Clock on June 4, 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.*