# bnClock vs Round Millisecond Clock

The clearest difference is review sentiment: bnClock at 55% against Round Millisecond Clock's 0%. bnClock also leads on rating (3.9 vs 1.0) and ads (none vs shown). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

bnClock holds the better App Store score, 3.9 against 1.0. That said, the two scores are not equally well evidenced: bnClock has 35 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 55% of bnClock's written reviews are positive against 0% of Round Millisecond Clock's.

bnClock ships an update every 2 months, Round Millisecond Clock every 4 months. The most recent releases landed on October 11, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | bnClock | Round Millisecond Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (35 ratings)](https://appshunter.io/ios/app/bnclock/id1214483482/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/round-millisecond-clock/id6736579896/reviews) |
| Number of ratings | **35** | 1 |
| Positive reviews | **55.2% 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 | 16 MB | 34 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jim Calvin](https://appshunter.io/developer/720127005) | [Seulki Eom](https://appshunter.io/developer/1718927408) |

## 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


### 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 bnClock free?

bnClock 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, bnClock or Round Millisecond Clock?

bnClock is rated higher. bnClock averages 3.9 out of 5 from 35 ratings, while Round Millisecond Clock averages 1.0 from 1 ratings.

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

Round Millisecond Clock shows ads; bnClock does not.

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

bnClock ships an update every 2 months, and Round Millisecond Clock every 4 months. Most recently, bnClock was updated on October 11, 2026 and Round Millisecond Clock on September 25, 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.*