ZenClock vs Momentous Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZenClock
This app transforms your iPad or iPhone into a visually appealing desk clock. It offers interactive time displays with customizable background color modes, including a unique spectrum that cycles through millions of colors over time.
- Minimalist design
- Interactive time display
- Widgets for quick access
- Single background color modes
- Color Clock modes with spectrum cycling
- Optimized for desk stands
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Zen Clock is a minimalist iPhone clock built around calm, legibility, and strong typography. Designed to work beautifully on a desk, nightstand, charging stand, or an always-nearby spare iPhone, it offers a full-screen time surface that never demands your attention. We intentionally avoided building a generic alarm, timer, or productivity app. Instead, Zen Clock’s promise is simple: make checking the time feel quiet, polished, and visually intentional. Signature Color Clock Modes Experience time as a living color, not just digits. Our signature Color Clock modes transform the current time into a shifting, live background gradient. Full Spectrum: Maps Unix time across the entire color spectrum. Day Mode: Maps the current day from midnight to night. Hour Mode: Maps the current hour from the top to the end of the hour. Curated Visual Themes & Typography Choose from seven striking visual themes, including White on Black, Black on White, White on Blue, Red on Black, and our signature Color Clock modes. Pair your theme with four distinct typographic styles (Zen, Rounded, Mono, and Serif) to make your clock feel airy, friendly, precise, or editorial. Composed for Your Space With our preview-first settings, you aren't just toggling options—you are composing a timepiece. Choose the layout that fits your environment: Pure: The ultimate minimalist experience. Time only. Calendar: Elegantly integrates the weekday and date. Editorial: A beautiful, designed asymmetric composition. Board: A restrained status surface that gracefully holds supporting information without overpowering the time. Supporting Context (Premium) For those who want a bit more at a glance, Zen Clock gracefully integrates extra details without the clutter. Add a curated World Clock rail to display up to two global cities (such as Los Angeles, New York, London, Paris, Tokyo, or Sydney). Access live local weather conditions and temperatures seamlessly integrated into your composed layout while the app is open. Home Screen Widget Bring a touch of Zen Clock to your Home Screen with our included minimal clock widget, featuring a stark black background, crisp white text, and our signature aesthetic. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sociallycs.com/privacy.html
Momentous Clock
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.
- 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
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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.
Screenshots
Verdict
The clearest difference is rating: Momentous Clock at 5.0 against ZenClock's 4.0. Momentous Clock also leads on in-app purchases (none vs 2) and update cadence (every 6 days vs every 3 months). On price, ratings volume, ads and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. ZenClock sells 2 in-app purchases, starting at $1.99 per month. Momentous Clock asks for nothing beyond the download.
Momentous Clock holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively.
ZenClock ships an update every 3 months, Momentous Clock every 6 days. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.
| Parameter | ZenClock | Momentous Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 3 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 8 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Socially Conscious Software LLC | Tutukain Software, LLC |
Customer experience
ZenClock
Momentous Clock
In-app purchases
ZenClock
- Zen Clock Plus Monthly$1.991 Month
- Zen Clock Plus Yearly$19.991 Year
Momentous Clock
No in-app purchases
Questions
Is ZenClock free?
Is Momentous Clock free?
Which has better reviews, ZenClock or Momentous Clock?
Do ZenClock or Momentous Clock have ads?
Which is updated more often, ZenClock or Momentous Clock?
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