# Momentous Clock — Make every minute momentous

> A clock that displays mathematical properties and number theory facts of the current time. (iPhone/iPad app by Tutukain Software, LLC.)

- Source: https://appshunter.io/ios/app/momentous-clock/id1608715857 (this page in markdown: same URL + `.md`)
- Developer: [Tutukain Software, LLC](https://appshunter.io/developer/1608715859)
- Category: Utilities, Entertainment
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 15.1 · 24 MB
- Languages: English
- Released: 2022-02-08
- Data updated: 2026-06-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/momentous-clock/id1608715857/reviews.md

## What is Momentous Clock?

Time isn’t just 6:31.

It’s 631 - a prime!  A lucky prime...

It’s the combination to the bike lock you had as a kid.

It might be the last digits of the cell phone of someone you love.

This is a clock for people who notice things like that.

Every minute, it:

• Computes mathematical properties of the current time
• Surfaces number theory facts (prime, factorization, powers, sequences, curiosities)
• Scrambles them onto glowing 16-segment LED displays, like your old Speak 'n Spell
• Optionally finds personal number connections in your contacts — entirely on device

Works great as a Mac app via Catalyst.

Contact matching happens entirely on device. No personal data is ever transmitted.
Usage analytics (anonymous) are collected to improve the app.

If you’ve ever factored timestamps in your head,
smiled at 5:12 = 2⁹,
or paused at 17:29…

This is the clock for you.  Make every minute momentous.

## Key features

- 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


## Frequently asked questions about Momentous Clock

### What makes Momentous Clock unique?

Momentous Clock goes beyond a standard time display by computing and showcasing mathematical properties and number theory facts for each minute. It also offers optional on-device contact matching for personal number connections.

### Does Momentous Clock collect my personal data?

No, Momentous Clock prioritizes user privacy. Contact matching happens entirely on device, and no personal data is ever transmitted. Anonymous usage analytics are collected solely for app improvement.

### What devices is Momentous Clock available on?

Momentous Clock is available for iPhone and iPad. It also works as a Mac app via Catalyst, offering a consistent experience across Apple devices.

### How often is Momentous Clock updated?

The latest version of Momentous Clock is 2.1.6, last updated on April 14, 2026. While specific update frequency isn't detailed, this indicates ongoing development and support.

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

Momentous Clock has an age rating of 4+, making it suitable for a wide range of users interested in its unique features.

### Can Momentous Clock find number connections in my contacts?

Yes, Momentous Clock can optionally find personal number connections within your contacts. This feature is processed entirely on your device for your privacy.

### Is Momentous Clock free to use?

Yes, Momentous Clock is available for free. There are no in-app purchases or advertisements, allowing for an uninterrupted experience.

### What kind of number theory facts does Momentous Clock show?

Momentous Clock displays facts related to prime numbers, factorization, powers, sequences, and other mathematical curiosities associated with the current time.

## Version history (last 5 releases)

### 2.1.6 — 2026-04-14

More facts!

### 2.1.1 — 2026-03-04

Fixed some of the hallucinated URLs.  Please keep sending me any issues!

### 2.1.0 — 2026-03-02

Many more facts, with links to learn more.

### 2.0.1 — 2026-02-25

Now friendlier to Romans!

### 2.0.0 — 2026-02-23

This version brings a complete graphic overhaul.  Now it looks much more like the digital alarm clocks pervasive throughout the 90s.

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## More apps by Tutukain Software, LLC

- [BubbleTimer](https://appshunter.io/ios/app/bubbletimer/id1624381717)

All apps by Tutukain Software, LLC: https://appshunter.io/developer/1608715859

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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 2026-06-04.*