# ZukiLog: Headache Diary — Doctor-ready 90-day report

> Doctor-ready 90-day report (iPhone/iPad app by Kenichi Nagamatsu.)

- Source: https://appshunter.io/ios/app/zukilog-headache-diary/id6778860656 (this page in markdown: same URL + `.md`)
- Developer: [Kenichi Nagamatsu](https://appshunter.io/developer/6773796328)
- Category: Health & Fitness, Medical
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: Japanese
- Released: 2026-06-25
- Data updated: 2026-10-25

## What is ZukiLog?

ZukiLog is a headache diary for people who live with migraines and weather-related headaches.

When your doctor asks "when do your headaches tend to happen?", it is hard to answer. ZukiLog logs your headaches, medication, sleep, and barometric pressure together, then runs on-device statistics and charts to show how your headaches line up with pressure and sleep.

- LOG IN 3 TAPS: When pain hits, just tap the intensity. Symptoms and notes are optional, and you can jot down anything else you notice. Log medication with one tap and rate how well it worked later.
- AUTOMATIC PRESSURE & SLEEP: Barometric pressure is fetched for your area automatically. Sleep is imported from Apple Health.
- PERSONAL CORRELATION ANALYSIS: ZukiLog estimates whether pressure drops or short sleep is more closely linked to your headaches, all computed on your device.
- DOCTOR-READY 90-DAY REPORT (Pro): Export the last 90 days of attack counts, medication effectiveness, and the correlation analysis as an A4 PDF you can show your doctor.
- PRIVACY FIRST: Logging, analysis, and report generation all happen on your device. Your health data is never sent to external servers.

ZUKILOG PRO (AUTO-RENEWABLE SUBSCRIPTION)
ZukiLog Pro unlocks the PDF report and 90-day long-term analysis.
- Yearly plan: JPY 2,400 per year, with a 7-day free trial for first-time subscribers
- Monthly plan: JPY 480 per month
Prices may vary by region and are shown in the app before purchase.

- Payment is charged to your Apple ID account at confirmation of purchase.
- The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the free trial or current period. Your account is charged for renewal within 24 hours before the end of the current period.
- You can manage or cancel your subscription anytime in Settings > Apple ID > Subscriptions.
- Any unused portion of a free trial is forfeited when you purchase a subscription.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://gist.github.com/el-el-san/924ca3b245a6e3b7f8a0f6fbccf8e3b6

ZukiLog is not a medical device; it is a tool for keeping records. The analysis is reference information based on your records. Please consult your doctor for any medical decisions. If your symptoms continue, please see a medical professional.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| ZukiLog Pro Yearly | $14.99 | per year |
| ZukiLog Pro | $2.99 | per month |


## Is ZukiLog safe?

Not enough ratings yet to assess ZukiLog.

## Is ZukiLog legit?

ZukiLog: Headache Diary appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for ZukiLog is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.1.0 — 2026-10-20

Added a yearly plan with a 7-day free trial, a first-launch introduction, and Terms of Use / Privacy Policy links on the purchase screen. Wording updates.

### 1.0 — 2026-06-25

No release notes.

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## More apps by Kenichi Nagamatsu

- [TermLink: SSH for AI Coding](https://appshunter.io/ios/app/termlink-ssh-for-ai-coding/id6774400673)
- [Calometer](https://appshunter.io/ios/app/calometer/id6781685532)

All apps by Kenichi Nagamatsu: https://appshunter.io/developer/6773796328

## Related topics

[zuki](https://appshunter.io/ios/topics/zuki)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-25.*