# Split Flap vs Momentous Clock

The clearest difference is price: Momentous Clock at Free against Split Flap's $0.99. Momentous Clock also leads on update cadence (every 6 days vs every 17 months) and rating (5.0 vs 4.7). Split Flap's advantage is ratings volume (6 vs 2). On ads, in-app purchases and device support there is nothing between them.

Momentous Clock is free to download; Split Flap costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Momentous Clock holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 6 and 2 respectively.

Split Flap ships an update every 17 months, Momentous Clock every 6 days. The most recent releases landed on October 1, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Split Flap | Momentous Clock |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.7 (6 ratings)](https://appshunter.io/ios/app/split-flap/id1498259010/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/momentous-clock/id1608715857/reviews)** |
| Number of ratings | **6** | 2 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 6 days** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 24 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zac Gorak](https://appshunter.io/developer/916419489) | [Tutukain Software, LLC](https://appshunter.io/developer/1608715859) |

## What reviewers say

### Split Flap

[App page](https://appshunter.io/ios/app/split-flap/id1498259010)

This utility app displays the time with an elegant split-flap design. It offers customizable themes, supports various time formats, and includes optional sound and seconds display.

**Highlights:** Split-flap time display, Customizable themes, 24-hour and 12-hour formats, Optional seconds display, Sound options, Open source

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Split Flap free?

Split Flap costs $0.99, with no in-app purchases.

### Is Momentous Clock free?

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

### Which has better reviews, Split Flap or Momentous Clock?

Momentous Clock is rated higher. Split Flap averages 4.7 out of 5 from 6 ratings, while Momentous Clock averages 5.0 from 2 ratings.

### Do Split Flap or Momentous Clock have ads?

Neither Split Flap nor Momentous Clock shows ads.

### Which is updated more often, Split Flap or Momentous Clock?

Split Flap ships an update every 17 months, and Momentous Clock every 6 days. Most recently, Split Flap was updated on October 1, 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.*