# Nature Flip Clock vs Clack Board

The clearest difference is in-app purchases: Clack Board at none against Nature Flip Clock's 1. Clack Board also leads on update cadence (every 3 days vs fortnightly) and device support (5 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Nature Flip Clock sells 1 one-off in-app purchase. Clack Board asks for nothing beyond the download.

Nature Flip Clock ships an update fortnightly, Clack Board every 3 days. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Nature Flip Clock | Clack Board |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/clack-board/id6809752097/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | — | Free |
| Size | 13 MB | 18 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Apple TV, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [四青 薛](https://appshunter.io/developer/1895262513) | [James Frewin](https://appshunter.io/developer/581734895) |

## What reviewers say

### Nature Flip Clock

[App page](https://appshunter.io/ios/app/nature-flip-clock-horae/id6801361948)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| The complete cabinet | $4.99 | one-time |


### Clack Board

[App page](https://appshunter.io/ios/app/clack-board/id6809752097)

This app simulates a split-flap display on your screen, allowing you to send messages that animate with realistic sound and physics. It can also display dynamic information like time, weather, sports scores, and data from various online sources.

**Highlights:** Realistic flap animation and sound, Customizable messages with color, Dynamic information channels (clock, weather, scores), Integration with Shortcuts and Siri, Developer API for custom integrations, Mac desktop wallpaper and screen saver, Home and Lock Screen widgets

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Nature Flip Clock free?

Nature Flip Clock is free to download, with in-app purchases available.

### Is Clack Board free?

Clack Board is free to download, with no in-app purchases.

### Do Nature Flip Clock or Clack Board have ads?

Neither Nature Flip Clock nor Clack Board shows ads.

### Which is updated more often, Nature Flip Clock or Clack Board?

Nature Flip Clock ships an update fortnightly, and Clack Board every 3 days. Most recently, Nature Flip Clock was updated on October 24, 2026 and Clack Board on October 26, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*