# Millisecond Clock vs chimingClock

The clearest difference is rating: Millisecond Clock at 4.7 against chimingClock's 4.1. Millisecond Clock also leads on ratings volume (131 vs 9). chimingClock's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price, review sentiment, device support and iOS requirement there is nothing between them.

Both are free to download. Millisecond Clock sells 3 one-off in-app purchases. chimingClock asks for nothing beyond the download.

Millisecond Clock holds the better App Store score, 4.7 against 4.1. That said, the two scores are not equally well evidenced: Millisecond Clock has 131 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 73% of Millisecond Clock's written reviews are positive against 71% of chimingClock's.

Millisecond Clock ships an update every 6 months, chimingClock weekly. The most recent releases landed on October 1, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Millisecond Clock | chimingClock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (131 ratings)](https://appshunter.io/ios/app/millisecond-clock/id1526615560/reviews)** | [4.1 (9 ratings)](https://appshunter.io/ios/app/chimingclock/id6446005837/reviews) |
| Number of ratings | **131** | 9 |
| Positive reviews | **72.7% of reviews** | 71.4% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 4 MB | 28 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chia-Chun Hsieh](https://appshunter.io/developer/908221958) | [ECHOWAVES CORP.](https://appshunter.io/developer/782010389) |

## What reviewers say

### Millisecond Clock

[App page](https://appshunter.io/ios/app/millisecond-clock/id1526615560)

This app displays the most accurate time available, down to the millisecond. It's useful for measuring network delays or video streaming lag by comparing displayed time differences.

**Highlights:** Millisecond precision time display, Accurate timekeeping for iPhone and iPad, Network delay measurement, Video streaming lag analysis, Free to download

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| Special Offer Package | $2.99 | one-time |
| Unlock Themes | $3.99 | one-time |


### chimingClock

[App page](https://appshunter.io/ios/app/chimingclock/id6446005837)

A simple standing clock app that always displays the correct time. It plays Westminster chimes every quarter hour, requiring minimal user interaction and customization.

**Highlights:** Always shows correct time, Westminster chimes on the quarter hour, Minimal user interaction, No customization required, Designed for simplicity

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Millisecond Clock free?

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

### Is chimingClock free?

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

### Which has better reviews, Millisecond Clock or chimingClock?

Millisecond Clock is rated higher. Millisecond Clock averages 4.7 out of 5 from 131 ratings, while chimingClock averages 4.1 from 9 ratings.

### Do Millisecond Clock or chimingClock have ads?

Millisecond Clock shows ads; chimingClock does not.

### Which is updated more often, Millisecond Clock or chimingClock?

Millisecond Clock ships an update every 6 months, and chimingClock weekly. Most recently, Millisecond Clock was updated on October 1, 2026 and chimingClock 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.*