Momentous Clock
Make every minute momentous
Free · Designed for iPad. Not verified for macOS.
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.
Ratings & Reviews
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More facts!
The developer, Tutukain Software, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Tutukain Software, LLC
- Size
- 25.3 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Copyright 2026, Tutukain Software, LLC