# Millisecond Clock vs Pop Cosmic

The clearest difference is in-app purchases: Pop Cosmic at none against Millisecond Clock's 3. Pop Cosmic also leads on ads (none vs shown) and update cadence (weekly vs every 6 months). Millisecond Clock's advantage is ratings volume (131 vs 2) and iOS requirement (15.0 vs 18.6). On price and device support there is nothing between them.

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

Pop Cosmic holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Millisecond Clock has 131 ratings behind it against 2, 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 100% of Pop Cosmic's.

Millisecond Clock ships an update every 6 months, Pop Cosmic weekly. The most recent releases landed on October 14, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Millisecond Clock | Pop Cosmic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (131 ratings)](https://appshunter.io/ios/app/millisecond-clock/id1526615560/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pop-cosmic/id6765731684/reviews)** |
| Number of ratings | **131** | 2 |
| Positive reviews | 72.7% of reviews | **100.0% 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 | 37 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Chia-Chun Hsieh](https://appshunter.io/developer/908221958) | [DreamSmith Labs LLC](https://appshunter.io/developer/1708767810) |

## 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 |


### Pop Cosmic

[App page](https://appshunter.io/ios/app/pop-cosmic/id6765731684)

This free community map app helps users navigate events and urban areas by allowing them to share and discover locations. It offers features like location tagging, discovery tools, a compass, and a smart concierge that provides real-time information.

**Highlights:** Community map creation and editing, Event and urban area navigation, Location tagging and discovery, Integrated compass, Map direction links, Smart concierge with real-time info

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

**In-app purchases:** none


## Frequently asked questions

### Is Millisecond Clock free?

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

### Is Pop Cosmic free?

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

### Which has better reviews, Millisecond Clock or Pop Cosmic?

Pop Cosmic is rated higher. Millisecond Clock averages 4.7 out of 5 from 131 ratings, while Pop Cosmic averages 5.0 from 2 ratings.

### Do Millisecond Clock or Pop Cosmic have ads?

Millisecond Clock shows ads; Pop Cosmic does not.

### Which is updated more often, Millisecond Clock or Pop Cosmic?

Millisecond Clock ships an update every 6 months, and Pop Cosmic weekly. Most recently, Millisecond Clock was updated on October 14, 2026 and Pop Cosmic on September 20, 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.*