# Momentous Clock vs ClockAPX

The clearest difference is in-app purchases: Momentous Clock at none against ClockAPX's 3. Momentous Clock also leads on ads (none vs shown) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. ClockAPX sells 3 in-app purchases, starting at $1.99 per month. Momentous Clock asks for nothing beyond the download.

## The numbers

| Metric | Momentous Clock | ClockAPX |
| --- | --- | --- |
| 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** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 days | — |
| Monetization | Free | — |
| Size | 24 MB | 13 MB |
| Requires iOS | **15.1** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tutukain Software, LLC](https://appshunter.io/developer/1608715859) | [Joonwoo Kim](https://appshunter.io/developer/1626035990) |

## 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


### ClockAPX

[App page](https://appshunter.io/ios/app/clockapx-dynamic-clock/id6759343630)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ClockAPX Plus Monthly | $1.99 | per month |
| ClockAPX Plus Yearly | $9.99 | per year |
| ClockAPX Plus Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is Momentous Clock free?

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

### Is ClockAPX free?

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

### Do Momentous Clock or ClockAPX have ads?

ClockAPX shows ads; Momentous Clock does not.

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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.*