# Flip Clock vs Round Millisecond Clock

The clearest difference is review sentiment: Flip Clock at 100% against Round Millisecond Clock's 0%. Flip Clock also leads on rating (4.7 vs 1.0) and ads (none vs shown). Round Millisecond Clock's advantage is iOS requirement (13.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Flip Clock holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Flip Clock has 21 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Flip Clock's written reviews are positive against 0% of Round Millisecond Clock's.

Flip Clock ships an update every 2 months, Round Millisecond Clock every 4 months. The most recent releases landed on October 10, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Flip Clock | Round Millisecond Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (21 ratings)](https://appshunter.io/ios/app/flip-clock-focus-timer/id6449533077/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/round-millisecond-clock/id6736579896/reviews) |
| Number of ratings | **21** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | **Free** | Ad-supported |
| Size | 15 MB | 34 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [裕涛 兰](https://appshunter.io/developer/1624361053) | [Seulki Eom](https://appshunter.io/developer/1718927408) |

## What reviewers say

### Flip Clock

[App page](https://appshunter.io/ios/app/flip-clock-focus-timer/id6449533077)

This app offers a visually stunning and artistic way to display time on your device. It combines unique clock face designs with useful features like a Pomodoro timer and relaxing music. Customize the look with various themes, colors, and fonts to match your personal style.

**Highlights:** Artistic clock faces, Pomodoro timer, Stopwatch, Relaxing music, Customizable themes, Dark mode

**Features:** Vision Pro support

**In-app purchases:** none


### Round Millisecond Clock

[App page](https://appshunter.io/ios/app/round-millisecond-clock/id6736579896)

This app offers a precise real-time digital clock with a unique circular interface, displaying both seconds and milliseconds. Customize your view with options for date, day of the week, and 12/24-hour format.

**Highlights:** Millisecond precision display, Dual circle interface for seconds and milliseconds, Customizable display (milliseconds, seconds, date, day), Multiple date formats, 12/24 hour support, Screen always on

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

**In-app purchases:** none


## Frequently asked questions

### Is Flip Clock free?

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

### Is Round Millisecond Clock free?

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

### Which has better reviews, Flip Clock or Round Millisecond Clock?

Flip Clock is rated higher. Flip Clock averages 4.7 out of 5 from 21 ratings, while Round Millisecond Clock averages 1.0 from 1 ratings.

### Do Flip Clock or Round Millisecond Clock have ads?

Round Millisecond Clock shows ads; Flip Clock does not.

### Which is updated more often, Flip Clock or Round Millisecond Clock?

Flip Clock ships an update every 2 months, and Round Millisecond Clock every 4 months. Most recently, Flip Clock was updated on October 10, 2026 and Round Millisecond Clock on September 25, 2026.

---

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