# Momentous Clock vs Bio3G Clock

The clearest difference is update cadence: Momentous Clock at every 6 days against Bio3G Clock's monthly. Bio3G Clock's advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

Momentous Clock ships an update every 6 days, Bio3G Clock monthly. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Momentous Clock | Bio3G 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 6 days** | Monthly |
| Monetization | Free | — |
| Size | 24 MB | 85 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tutukain Software, LLC](https://appshunter.io/developer/1608715859) | [Biometrics 3g (PTY) LTD](https://appshunter.io/developer/1843550149) |

## What reviewers say

### 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


### Bio3G Clock

[App page](https://appshunter.io/ios/app/bio3g-clock/id6447108239)

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

**In-app purchases:** none


## Frequently asked questions

### Is Momentous Clock free?

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

### Is Bio3G Clock free?

Bio3G Clock is free to download, with no in-app purchases.

### Do Momentous Clock or Bio3G Clock have ads?

Neither Momentous Clock nor Bio3G Clock shows ads.

### Which is updated more often, Momentous Clock or Bio3G Clock?

Momentous Clock ships an update every 6 days, and Bio3G Clock monthly. Most recently, Momentous Clock was updated on November 3, 2026 and Bio3G Clock on November 7, 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.*