# bnClock vs Millisecond Clock

The clearest difference is rating: Millisecond Clock at 4.7 against bnClock's 3.9. Millisecond Clock also leads on review sentiment (73% vs 55%) and ratings volume (131 vs 35). bnClock's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price and device support there is nothing between them.

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

Millisecond Clock holds the better App Store score, 4.7 against 3.9. Both are backed by a comparable volume of ratings — 35 and 131 respectively. Written reviews point the same way: 55% of bnClock's written reviews are positive against 73% of Millisecond Clock's.

bnClock ships an update every 2 months, Millisecond Clock every 6 months. The most recent releases landed on September 28, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | bnClock | Millisecond Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (35 ratings)](https://appshunter.io/ios/app/bnclock/id1214483482/reviews) | **[4.7 (131 ratings)](https://appshunter.io/ios/app/millisecond-clock/id1526615560/reviews)** |
| Number of ratings | 35 | **131** |
| Positive reviews | 55.2% of reviews | **72.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 16 MB | 4 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jim Calvin](https://appshunter.io/developer/720127005) | [Chia-Chun Hsieh](https://appshunter.io/developer/908221958) |

## What reviewers say

### bnClock

[App page](https://appshunter.io/ios/app/bnclock/id1214483482)

This app displays the time with exceptionally large numbers, ideal for nighttime viewing or as a travel alarm. It also offers current weather information and customizable alarm sounds, including music from your library. Personalize your experience with custom background colors or photos.

**Highlights:** Extra-large number display, Built-in alarm clock, Current weather and forecast, Customizable alarm sounds, Photo or slideshow backgrounds, Customizable background colors

**Features:** Vision Pro support

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is bnClock free?

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

### Is Millisecond Clock free?

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

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

Millisecond Clock is rated higher. bnClock averages 3.9 out of 5 from 35 ratings, while Millisecond Clock averages 4.7 from 131 ratings.

### Do bnClock or Millisecond Clock have ads?

Millisecond Clock shows ads; bnClock does not.

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

bnClock ships an update every 2 months, and Millisecond Clock every 6 months. Most recently, bnClock was updated on September 28, 2026 and Millisecond Clock on September 6, 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.*