# dotmill PMS vs Second

The clearest difference is in-app purchases: dotmill PMS at none against Second's 1. dotmill PMS also leads on iOS requirement (12.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Second sells 1 one-off in-app purchase. dotmill PMS asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on September 23, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | dotmill PMS | Second |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/second-sync/id6752860014/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 88.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | Every 4 days |
| Monetization | — | Free |
| Size | 67 MB | 49 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [dotmill](https://appshunter.io/developer/1734396369) | [Minjun Kim](https://appshunter.io/developer/1841275054) |

## What reviewers say

### dotmill PMS

[App page](https://appshunter.io/ios/app/dotmill-pms/id6478913376)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is dotmill PMS free?

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

### Is Second free?

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

### Do dotmill PMS or Second have ads?

Neither dotmill PMS nor Second shows ads.

### Which is updated more often, dotmill PMS or Second?

dotmill PMS ships an update every 4 days, and Second every 4 days. Most recently, dotmill PMS was updated on September 23, 2026 and Second on September 28, 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.*