# Clock+ vs Round Millisecond Clock

The clearest difference is review sentiment: Clock+ at 46% against Round Millisecond Clock's 0%. Clock+ also leads on rating (4.5 vs 1.0) and ads (none vs shown). Round Millisecond Clock's advantage is in-app purchases (none vs 1). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Clock+ sells 1 one-off in-app purchase. Round Millisecond Clock asks for nothing beyond the download.

Clock+ holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Clock+ has 1K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 46% of Clock+'s written reviews are positive against 0% of Round Millisecond Clock's.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 27, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Clock+ | Round Millisecond Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1K ratings)](https://appshunter.io/ios/app/clock-plus-digital-clock-and-alarm/id1570631401/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/round-millisecond-clock/id6736579896/reviews) |
| Number of ratings | **1K** | 1 |
| Positive reviews | **45.8% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 15 MB | 34 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MARK MANSER](https://appshunter.io/developer/1378563905) | [Seulki Eom](https://appshunter.io/developer/1718927408) |

## What reviewers say

### Clock+

[App page](https://appshunter.io/ios/app/clock-plus-digital-clock-and-alarm/id1570631401)

This bedside clock app features large, easy-to-read digits and simple alarm controls. Customize your experience with various themes and wake-up sounds.

**Highlights:** Large digit display, Single tap alarm on/off, Double tap to snooze, Swipe to dim display, Customizable themes, Select wake-up alarm sound

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All | $0.99 | one-time |

**What reviewers like**

- 👍 Great clock
- 👍 Simple and effective
- 👍 Excellent app
- 👍 Works great
- 👍 Nighttime bedside clock

**What reviewers complain about**

- 🐛 Alarm doesn't work
- 🐛 Alarm not reliable
- 🐛 Alarm sound issues
- 🐛 Alarm not going off
- 🐛 Alarm too quiet

**Reported bugs**

- Alarm not working
- Date stuck on wrong day
- Settings not saving
- Inconsistent behavior after updates

**Requested features**

- Add weather information
- More alarm sound options
- Add snooze function
- Landscape mode
- Customizable colors and rotation


### 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 Clock+ free?

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

### Is Round Millisecond Clock free?

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

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

Clock+ is rated higher. Clock+ averages 4.5 out of 5 from 1K ratings, while Round Millisecond Clock averages 1.0 from 1 ratings.

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

Round Millisecond Clock shows ads; Clock+ does not.

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

Clock+ ships an update every 4 months, and Round Millisecond Clock every 4 months. Most recently, Clock+ was updated on October 27, 2026 and Round Millisecond Clock on October 21, 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.*