# When vs Flip Clock 3D

The clearest difference is in-app purchases: When at none against Flip Clock 3D's 1. When also leads on iOS requirement (10.0 vs 12.0). Flip Clock 3D's advantage is review sentiment (100% vs 90%). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Flip Clock 3D sells 1 one-off in-app purchase. When asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for When against 4.8 for Flip Clock 3D. Both are backed by a comparable volume of ratings — 28 and 24 respectively. Written reviews are what separate them: 90% of When's written reviews are positive against 100% of Flip Clock 3D's.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 1, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | When | Flip Clock 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (28 ratings)](https://appshunter.io/ios/app/when-flip-clock/id1539325158/reviews) | **[4.8 (24 ratings)](https://appshunter.io/ios/app/flip-clock-3d-study-time/id6670719398/reviews)** |
| Number of ratings | **28** | 24 |
| Positive reviews | 90.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Weekly | Weekly |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 73 MB | 206 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [磊 岑](https://appshunter.io/developer/1102462338) | [乃君 黄](https://appshunter.io/developer/1337343608) |

## What reviewers say

### When

[App page](https://appshunter.io/ios/app/when-flip-clock/id1539325158)

This app offers a minimalist flip clock experience with customizable widgets. It features a full-screen display with classic page-turning animations and adjustable brightness. Personalize your time display with options for seconds, date, and week.

**Highlights:** Full-screen classic flip animation, Minimalist design style, Customizable time display (seconds, date, week), 12/24 hour mode switching, Adjustable screen brightness, Multiple widget options (Flip Clock, Digital Clock, Calendar, Progress Bar, Disc Clock)

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

**In-app purchases:** none


### Flip Clock 3D

[App page](https://appshunter.io/ios/app/flip-clock-3d-study-time/id6670719398)

Enhance your workspace with a realistic 3D mechanical flip clock. This app helps improve focus and productivity during work or study sessions by providing a clear time display. Customize with various fonts and themes, and utilize the alarm feature when the app is active.

**Highlights:** Vivid 3D mechanical components, Adjustable viewing angles, 12/24 hour mode switching, Multiple font and theme options, Foreground alarm functionality

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all contents | $1.99 | one-time |


## Frequently asked questions

### Is When free?

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

### Is Flip Clock 3D free?

Flip Clock 3D is free to download, with in-app purchases available.

### Which has better reviews, When or Flip Clock 3D?

Flip Clock 3D is rated higher. When averages 4.7 out of 5 from 28 ratings, while Flip Clock 3D averages 4.8 from 24 ratings.

### Do When or Flip Clock 3D have ads?

Both When and Flip Clock 3D show ads.

### Which is updated more often, When or Flip Clock 3D?

When ships an update weekly, and Flip Clock 3D weekly. Most recently, When was updated on October 1, 2026 and Flip Clock 3D on September 24, 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.*