# ZenClock vs Momentous Clock

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.

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.

## The numbers

| Metric | ZenClock | Momentous Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/zenclock-minimal-clock/id953822313/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/momentous-clock/id1608715857/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 days** |
| Monetization | Free | Free |
| Size | 8 MB | 24 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Socially Conscious Software LLC](https://appshunter.io/developer/302019503) | [Tutukain Software, LLC](https://appshunter.io/developer/1608715859) |

## What reviewers say

### ZenClock

[App page](https://appshunter.io/ios/app/zenclock-minimal-clock/id953822313)

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.

**Highlights:** Minimalist design, Interactive time display, Widgets for quick access, Single background color modes, Color Clock modes with spectrum cycling, Optimized for desk stands

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zen Clock Plus Monthly | $1.99 | per month |
| Zen Clock Plus Yearly | $19.99 | per year |


### 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


## Frequently asked questions

### Is ZenClock free?

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

### Is Momentous Clock free?

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

### Which has better reviews, ZenClock or Momentous Clock?

Momentous Clock is rated higher. ZenClock averages 4.0 out of 5 from 4 ratings, while Momentous Clock averages 5.0 from 2 ratings.

### Do ZenClock or Momentous Clock have ads?

Neither ZenClock nor Momentous Clock shows ads.

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

ZenClock ships an update every 3 months, and Momentous Clock every 6 days. Most recently, ZenClock was updated on October 6, 2026 and Momentous Clock on October 3, 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.*