# スクナ — 新時代の健康管理 — 自分の健康を管理するアプリ > Personal health record management app integrating iPhone and Apple Watch data. (iPhone/iPad app by MASAYUKI WADA.) - Source: https://appshunter.io/ios/app/id1543589258 (this page in markdown: same URL + `.md`) - Developer: [MASAYUKI WADA](https://appshunter.io/developer/424572623) - Category: Health & Fitness, Medical - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings - Age rating: 17+ - Requires: iOS 15.0 · 55 MB - Languages: English, Japanese - Released: 2021-02-02 - Data updated: 2026-06-22 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/id1543589258/reviews.md ## What is スクナ? ◉ Sukuna "Sukuna" is an app for managing your health condition and sharing data with other users. Health data that can be measured with iPhone and Apple Watch is called PHR (Personal Health Record) and is expected to be used in the medical field. Sukuna can use this to help you manage your own health and share it with other users to help watch over the elderly and communicate in emergencies. If you start Sukuna, you can see your activity status at a glance from the number of steps and distance traveled on that day measured by a pedometer. Days with a lot of activity are displayed in red, and days with less activity are displayed in blue. These data can also be exported in CSV format, which will be useful for users who want to manage their health condition in detail. Sukuna was developed with the aim of managing health as much as possible, not fitness or diet that requires active efforts, nor medical care that requires medication or behavior change. See below for details on each function. ◯Blood oxygen saturation Measures and displays oxygen saturation; requires Apple Watch Series 6 or later. When wearing an Apple Watch, oxygen saturation is automatically measured without activating the Sukuna on the iPhone. The measured data can be checked on Sukuna. The data can also be exported in CSV format. Oxygen saturation is measured and recorded using iOS HealthKit. ◯Measurement of hand washing frequency Measures the number of hand washings, requiring an Apple Watch Series 4 or later. Apple Watch must be worn at the time of measurement. The measured number of hand washings can be checked in the app or exported in CSV format. This function uses HealthKit of iOS. ◯Pedometer The iPhone's sensor is used to measure the number of steps taken. It is not necessary to have the Sukuna running in order to take measurements. The number of steps recorded can be checked in the app and exported in CSV format. This function uses HealthKit of iOS. ◯Measurement of walking and running distances The iPhone's sensor is used to measure the distance traveled by walking and running. The app does not need to be running for the measurement. Measured distances can be viewed within the app and exported in CSV format. This function uses HealthKit of iOS. ◯Number of Falls The Apple Watch is used to detect falls. The app does not need to be running for the measurement. You can check the measured fall information on the "Visit locations and falls" screen in the app. This function uses HealthKit of iOS. ◯Location information The iPhone's GPS is used to record the places you visit. The app does not need to be running for measurement. You can check the measured location information on the map in the app. ◉Required Devices The following devices are required to use Sukuna's functions. ◯Distance and number of steps for walking and running You can measure the data using only your iPhone. ◯Number of times you wash your hands Series 4 or later Apple Watch is required. ◯Oxygen Saturation Requires Apple Watch Series 6 or later. ◯Falls Requires Series4 or later Apple Watch. ◯Location Information It can be measured only with iPhone. ◉Paid features (In-App Purchase) Users can measure, record, export and send health data to other users free of charge. To view other user's data, you need to subscribe to a subscription. The subscription course varies depending on how many users' data you need to view. ○Sukuna Subscription (5 users) You can receive health data for up to 5 users. ○Sukuna Subscription (10 users) You can receive health data for up to 10 users. ○Sukuna Subscription (20 users) You can receive health data for up to 20 users. ○Sukuna Subscription (50 users) You can receive health data for up to 50 users. ○Sukuna Subscription (100 users) You can receive health data for up to 100 users. ## Key features - Step and distance tracking - Blood oxygen saturation measurement - Hand washing frequency monitoring - Fall detection - Location tracking - CSV data export ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Sukuna Subscription (5 users) | $6.49 | per month | | Sukuna Subscription (10 Users) | $13.99 | per month | | Sukuna Subscription (20 Users) | $31.99 | per month | | Sukuna Subscription (50 Users) | $83.99 | per month | | Sukuna Subscription (100Users) | $174.99 | per month | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | スクナプレミアム | $3.99 | one-time | ## Frequently asked questions about スクナ ### What health data can Sukuna track? Sukuna can track your daily steps, walking and running distances, blood oxygen saturation (requires Apple Watch Series 6 or later), hand washing frequency (requires Apple Watch Series 4 or later), falls detected by Apple Watch, and your location history. ### Does Sukuna require an Apple Watch? While some features like blood oxygen saturation, hand washing frequency, and fall detection require an Apple Watch (specific models mentioned in the description), basic step and distance tracking can be done using just your iPhone. ### Can I export my health data from Sukuna? Yes, Sukuna allows you to export your health data, including steps, distance, blood oxygen saturation, and hand washing frequency, in CSV format. This is useful for detailed personal health management. ### What is the age rating for Sukuna? Sukuna has an age rating of 17+. This is likely due to the sensitive nature of health data and potential for advanced health tracking features. ### How often is Sukuna updated? The app was last updated on October 10, 2022, with version 2.2.1. Information on the exact update frequency is not provided, but this indicates recent activity. ### What are the subscription plans for Sukuna? Sukuna offers several subscription tiers for multiple users, ranging from $6.49/month for 5 users up to $174.99/month for 100 users. These plans are designed for families or groups managing health together. ### Is Sukuna free to use? The base Sukuna app is free to download and use for basic health tracking. However, it offers in-app purchases for subscription plans that unlock features like multi-user support. ### How does Sukuna help with health management? Sukuna focuses on managing your health condition rather than intensive fitness or diet programs. It provides a clear overview of your activity and vital signs, facilitating proactive health awareness and data sharing. ## Version history (last 5 releases) ### 2.2.1 — 2022-10-10 ◉ver.2.2.1 - Minor bugfixes. ### 2.2.0 — 2022-08-10 ◉ver.2.2.0 - Automatic recording of location information is available. - Falls can now be recorded. - Fixed bugs. ### 2.1.0 — 2022-06-27 ◉ver.2.1.0 - Design of Home screen has been changed. - Some bug fixes. ### 2.0.1 — 2022-05-25 ◉ver. 2.0.1 - Improved UX on settings screen. - Minor bug fix. ### 2.0.0 — 2022-04-20 ◎ver.2.0.0 - Data sharing functionality has been added. - Subscriptions have been introduced. - Bugs were fixed. ## More apps by MASAYUKI WADA - [All of my life.](https://appshunter.io/ios/app/all-of-my-life/id828181434) - [daybook.](https://appshunter.io/ios/app/daybook/id1066912352) - [BizCon](https://appshunter.io/ios/app/bizcon/id1561707501) - [Alarmo - Wake Your Way](https://appshunter.io/ios/app/alarmo-wake-your-way/id6758202256) All apps by MASAYUKI WADA: https://appshunter.io/developer/424572623 --- *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 2026-06-22.*