# Millisecond Clock vs Clock+

The clearest difference is ads: Clock+ at none against Millisecond Clock's shown. Clock+ also leads on ratings volume (998 vs 131) and iOS requirement (13.0 vs 15.0). Millisecond Clock's advantage is review sentiment (73% vs 45%) and rating (4.7 vs 4.5). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Millisecond Clock sells 3 one-off in-app purchases and Clock+ sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Millisecond Clock holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Clock+ has 998 ratings behind it against 131, 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 45% of Clock+'s.

Millisecond Clock ships an update every 6 months, Clock+ every 4 months. The most recent releases landed on October 14, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Millisecond Clock | Clock+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (131 ratings)](https://appshunter.io/ios/app/millisecond-clock/id1526615560/reviews)** | [4.5 (998 ratings)](https://appshunter.io/ios/app/clock-plus-digital-clock-and-alarm/id1570631401/reviews) |
| Number of ratings | 131 | **998** |
| Positive reviews | **72.7% of reviews** | 45.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 4 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 4 MB | 15 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | +4 |
| Developer | [Chia-Chun Hsieh](https://appshunter.io/developer/908221958) | [MARK MANSER](https://appshunter.io/developer/1378563905) |

## 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 |


### 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


## Frequently asked questions

### Is Millisecond Clock free?

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

### Is Clock+ free?

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

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

Millisecond Clock is rated higher. Millisecond Clock averages 4.7 out of 5 from 131 ratings, while Clock+ averages 4.5 from 998 ratings.

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

Millisecond Clock shows ads; Clock+ does not.

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

Millisecond Clock ships an update every 6 months, and Clock+ every 4 months. Most recently, Millisecond Clock was updated on October 14, 2026 and Clock+ on October 17, 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.*