# Millisecond Clock vs StandIn

The clearest difference is in-app purchases: StandIn at none against Millisecond Clock's 3. StandIn also leads on ads (none vs shown) and update cadence (every 10 days vs every 6 months). Millisecond Clock's advantage is iOS requirement (15.0 vs 18.0). On price and device support there is nothing between them.

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

Millisecond Clock ships an update every 6 months, StandIn every 10 days. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Millisecond Clock | StandIn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (131 ratings)](https://appshunter.io/ios/app/millisecond-clock/id1526615560/reviews)** | — |
| Number of ratings | **131** | — |
| Positive reviews | 72.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 15 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chia-Chun Hsieh](https://appshunter.io/developer/908221958) | [TRAM BICH DANG](https://appshunter.io/developer/6789340758) |

## 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 |


### StandIn

[App page](https://appshunter.io/ios/app/standin-line-holding/id6789340756)

**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 StandIn free?

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

### Do Millisecond Clock or StandIn have ads?

Millisecond Clock shows ads; StandIn does not.

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

Millisecond Clock ships an update every 6 months, and StandIn every 10 days. Most recently, Millisecond Clock was updated on October 14, 2026 and StandIn on October 7, 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.*