# Second vs MilliS

The clearest difference is iOS requirement: Second at 15.0 against MilliS's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Second sells 1 one-off in-app purchase and MilliS sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Second | MilliS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/second-sync/id6752860014/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 days | — |
| Monetization | Free | — |
| Size | 55 MB | 7 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Minjun Kim](https://appshunter.io/developer/1841275054) | [Jonghyeok Lim](https://appshunter.io/developer/6788035432) |

## What reviewers say

### Second

[App page](https://appshunter.io/ios/app/second-sync/id6752860014)

This utility app provides precise server time synchronization down to milliseconds, crucial for time-sensitive events like registrations and ticketing. It features drift tracking for sustained accuracy and a Picture-in-Picture timer for live monitoring while using other applications.

**Highlights:** Precise server time synchronization, Drift tracking for sustained accuracy, Picture-in-Picture (PiP) timer, Example site shortcuts, Multilingual support

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 초정확 Pro 업그레이드 | $1.99 | one-time |


### MilliS

[App page](https://appshunter.io/ios/app/millis/id6788035100)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MilliS Pro | $1.99 | one-time |


## Frequently asked questions

### Is Second free?

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

### Is MilliS free?

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

### Do Second or MilliS have ads?

Both Second and MilliS show ads.

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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.*