Contents
Article 1 (Nature of the App)Article 2 (Nature of the Calculated Results)Article 3 (In-App Purchases)Article 4 (Data Storage and Backups)Article 5 (Prohibited Conduct)Article 6 (Limitation of Liability)Article 7 (Changes and Discontinuation)Article 8 (Governing Law and Jurisdiction)Article 9 (Contact)Last updated: September 26, 2026
These Terms of Use (these “Terms”) govern the use of the iOS app Nemuri (the “App”) provided by StackWorks (the “Developer”). By using the App, you are deemed to have agreed to these Terms.
Article 1 (Nature of the App)
The App is a tool for comparing lifestyle factors with your sleep records. It is not a medical device and is not intended to diagnose, treat or prevent any disease. Do not use what the App shows to make medical decisions. If you have symptoms that concern you, please consult a healthcare professional.
Article 2 (Nature of the Calculated Results)
The differences, patterns, sleep debt, social jet lag and tonight's bedtime shown by the App are the results of statistical calculations based on your records and Health data. They show correlations and do not indicate causation. The accuracy of sleep measurements depends on the device or app that recorded them. Tonight's bedtime is the result of a calculation; please make your own decisions based on your physical condition and schedule.
Article 3 (In-App Purchases)
Nemuri Plus is a non-consumable In-App Purchase that you buy once. Its price is shown on the purchase screen in the App. Purchases and refunds are subject to Apple's terms. With Restore Purchases, you can also use it on your other devices signed in with the same Apple Account. Family Sharing is supported.
Article 4 (Data Storage and Backups)
Your data is stored only on your iPhone. In case your device fails or is lost, or the App is deleted, please make your own backups with Export Backup in the App. Importing a backup replaces your current data.
Article 5 (Prohibited Conduct)
- Using the App in a way that violates laws and regulations or public order and morals
- Analyzing, modifying or redistributing the App
- Using the App in a way that infringes the rights of others
Article 6 (Limitation of Liability)
Except in cases of the Developer's willful misconduct or gross negligence, the Developer is not liable for any damage arising from decisions or actions based on the App's calculated results, displays or notifications.
Article 7 (Changes and Discontinuation)
The Developer may change these Terms or the content of the App, or stop providing the App. Significant changes will be announced on this page or in the App Store.
Article 8 (Governing Law and Jurisdiction)
These Terms are governed by the laws of Japan. The Tokyo District Court shall have exclusive agreed jurisdiction as the court of first instance over any dispute relating to the App.