# Sound Counting Detection vs Round Millisecond Clock

The clearest difference is price: Round Millisecond Clock at Free against Sound Counting Detection's $0.99. Sound Counting Detection's advantage is ads (none vs shown). On update cadence, in-app purchases, device support and iOS requirement there is nothing between them.

Round Millisecond Clock is free to download; Sound Counting Detection costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 14, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Sound Counting Detection | Round Millisecond Clock |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/round-millisecond-clock/id6736579896/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | — | Ad-supported |
| Size | 2 MB | 34 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [方 沈](https://appshunter.io/developer/882296318) | [Seulki Eom](https://appshunter.io/developer/1718927408) |

## What reviewers say

### Sound Counting Detection

[App page](https://appshunter.io/ios/app/sound-counting-detection/id920363167)

**Features:** macOS Compatibility, 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 Sound Counting Detection free?

Sound Counting Detection costs $0.99, with no in-app purchases.

### Is Round Millisecond Clock free?

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

### Do Sound Counting Detection or Round Millisecond Clock have ads?

Round Millisecond Clock shows ads; Sound Counting Detection does not.

### Which is updated more often, Sound Counting Detection or Round Millisecond Clock?

Sound Counting Detection ships an update every 4 months, and Round Millisecond Clock every 4 months. Most recently, Sound Counting Detection was updated on October 14, 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.*