# 대한두통학회 두통일기 vs Second

대한두통학회 두통일기 and Second both sit at 5.0 stars, but that hides the real split: 89% of Second's written reviews are positive against 43% of 대한두통학회 두통일기's. Second also leads on update cadence (every 4 days vs every 6 weeks). 대한두통학회 두통일기's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, rating, ratings volume and monetization model there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for 대한두통학회 두통일기 against 5.0 for Second. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews are what separate them: 43% of 대한두통학회 두통일기's written reviews are positive against 89% of Second's.

대한두통학회 두통일기 ships an update every 6 weeks, Second every 4 days. The most recent releases landed on October 6, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | 대한두통학회 두통일기 | Second |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/headache-diary/id1546571680/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/second-sync/id6752860014/reviews) |
| Number of ratings | 3 | **4** |
| Positive reviews | 43.1% of reviews | **88.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Monetization | Free | Free |
| Size | 30 MB | 55 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [The Korean Headache Society](https://appshunter.io/developer/1545891781) | [Minjun Kim](https://appshunter.io/developer/1841275054) |

## What reviewers say

### 대한두통학회 두통일기

[App page](https://appshunter.io/ios/app/headache-diary/id1546571680)

This app allows users to meticulously track their headaches, offering both simple and detailed recording options. It includes medication logging, provides statistical summaries for medical consultations, and features specialized reminders for appointments and medication schedules.

**Highlights:** Detailed and simple headache logging, Medication registration and tracking, Statistical summaries for doctor visits, Headache-specific reminders, Temporary saving of headache onset, Calendar and list view for headache management

**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 대한두통학회 두통일기 free?

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

### Is Second free?

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

### Which has better reviews, 대한두통학회 두통일기 or Second?

대한두통학회 두통일기 and Second are both rated 5.0 out of 5 on the App Store, from 3 and 4 ratings respectively.

### Do 대한두통학회 두통일기 or Second have ads?

Second shows ads; 대한두통학회 두통일기 does not.

### Which is updated more often, 대한두통학회 두통일기 or Second?

대한두통학회 두통일기 ships an update every 6 weeks, and Second every 4 days. Most recently, 대한두통학회 두통일기 was updated on October 6, 2026 and Second on October 11, 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.*