Terms of Use

Last updated: November 4, 2026

Please read these Terms of Use (“these Terms”) before using the app “Hakarepo” (“the App”) provided by akin.ai.app (“we”). By installing and starting to use the App, you are deemed to have agreed to these Terms. This English version is a translation of the Japanese original. If the two differ, the Japanese version prevails.

Article 1 (Scope)

These Terms apply to all matters between you and us regarding the use of the App.

The App is distributed through the App Store operated by Apple Inc. (“Apple”). In addition to these Terms, the App Store’s terms apply to downloading and updating the App.

Article 2 (Registration)

No account registration or sign-in is needed to use the App. Your use under these Terms begins when you install and start using the App.

Article 3 (Use by Minors)

If you are a minor, please use the App with the consent of a parent or other legal guardian.

Article 4 (Storage of Entries and Your Responsibility)

Items you create and what you log in the App (“entries”) are stored on your device and, if you are signed in to iCloud, in your own iCloud. We do not receive your entries or store them on any server.

Saving to iCloud and syncing between devices are performed by Apple’s iCloud. Depending on network conditions, available iCloud storage, sign-in status, and so on, syncing may be delayed or may not happen. If the same item for the same day is edited on multiple devices at almost the same time, only the most recently saved content may remain.

If you do not use iCloud, your entries will be lost if you delete the App from your device, reset your device, or lose or break your device, and we cannot restore them.

Article 5 (Importing Entries from Other Apps)

The App can import CSV files exported by other apps. However, we do not guarantee that CSV files of every format can be imported correctly.

Please check imported entries yourself after importing. The App does not change the source files or other apps’ data.

Article 6 (Health-Related Entries)

The App is a tool for logging your own numbers and looking back at how they change. It is not a medical device and is not intended to diagnose, treat, or prevent any disease.

For decisions about weight, blood pressure, sleep, or other health matters, do not rely solely on the App’s entries or charts; consult a doctor or other professional as needed.

Article 7 (Intellectual Property)

Copyrights, trademarks, and other intellectual property rights in the App (including its program, design, text, icons, and name) belong to us or to rights holders who have licensed them to us. These Terms grant you a right to use the App and do not transfer any intellectual property rights.

Rights to what you log in the App belong to you. Because we do not receive your entries, we acquire no rights to them.

Article 8 (Prohibited Conduct)

When using the App, you must not:

Article 9 (Changes to, Suspension of, and Termination of the App)

We may change the App’s content, stop providing updates, or stop distributing the App on the App Store.

If, among the above, we remove features provided in a paid plan (Article 10) or stop offering a paid plan, we will announce it in the App or on our public website at least 30 days in advance.

Even if distribution of the App ends, the App already installed on your device and your entries can continue to be used as they are (although the App may stop working in future versions of iOS).

Article 10 (Fees and Paid Plans)

The App is free to use. When used for free, the App shows ads.

We offer the following two paid plans as auto-renewable App Store subscriptions. With “Remove Ads” (monthly), ads are no longer shown and you can set up to three reminders. With “Goals” (monthly), in addition to everything in “Remove Ads,” you can set a goal and deadline for each item and see your progress on charts. Prices (including tax) are shown on the App’s purchase screen and in our Specified Commercial Transactions Act disclosure (in Japanese).

The fee is charged to your Apple Account when you confirm the purchase. Unless canceled at least 24 hours before the end of the current period, a plan renews automatically for the same period at the same price, and the fee for the next period is charged within 24 hours before the current period ends.

You can cancel at any time in iPhone Settings → your name → Subscriptions, or in the App’s Settings → Plan. After canceling, you can keep using the plan until the end of the period you have paid for. No prorated refunds are given for canceling partway through a period.

Payments and refunds are handled by Apple under the App Store’s terms. We cannot issue refunds directly. To request a refund, please follow Apple’s procedures.

If you change from “Remove Ads” to “Goals,” the change takes effect immediately, and the remaining period is settled under the App Store’s rules. If you change from “Goals” to “Remove Ads,” the change takes effect when the current period ends.

If you cancel a paid plan, your entries and the goals you set are not deleted. The Goals screen and the goal lines on charts become unavailable, and ads are shown. Only the first reminder is delivered; the second and third are paused, not deleted. If you subscribe again, everything works as before.

We may change the prices of paid plans. For a price increase, we will notify you in advance under the App Store’s rules, and obtain your consent where the App Store’s rules require it.

We will never change a feature offered for free into a paid one without prior notice.

Article 11 (Disclaimer of Warranties and Limitation of Liability)

We make no express or implied warranty that the App is free from defects in fact or in law (including defects in safety, reliability, accuracy, completeness, effectiveness, fitness for a particular purpose, or security, as well as errors, bugs, and infringement of rights).

The App’s charts and other displays are based on the values you log, and we are not responsible for the accuracy of your entries.

If you suffer damage for reasons attributable to us, we will be liable in accordance with applicable laws. However, if the damage is caused by our negligence (excluding gross negligence), our liability is limited to ordinary and direct damage actually incurred by you.

Nothing in these Terms limits or excludes our liability that cannot be limited or excluded under applicable consumer protection laws.

We are not responsible for the content of ads shown in the App, or for services or transactions reached through ads. Transactions reached through ads are between you and the advertiser.

Article 12 (Changes to These Terms)

We may change these Terms when the change is in the general interest of users, or when it does not go against the purpose of these Terms and is reasonable in light of the need for the change, the appropriateness of the new content, and other circumstances.

When we change these Terms, we will announce the change, the new content, and the effective date in the App or on our public website before the change takes effect.

Changes not covered by the two preceding paragraphs that require your consent will be made only after you consent.

Article 13 (Handling of Personal Information)

Your information in the App is handled as set out in our Privacy Policy.

Article 14 (Notices and Contact)

We notify you through messages in the App, App Store update notes, or posts on our public website.

Please contact us by email at: akin.ai.app / Contact: akin.ai.app@gmail.com

Article 15 (No Assignment)

You may not assign or pledge your rights or obligations under these Terms to a third party without our prior written consent.

Article 16 (Severability)

Even if any provision of these Terms, or part of one, is held invalid or unenforceable under the Consumer Contract Act or other laws, the remaining provisions of these Terms remain in full force and effect.

Article 17 (Governing Law and Jurisdiction)

These Terms are governed by the laws of Japan.

Any dispute relating to the App shall be subject to the exclusive jurisdiction of the Tokyo District Court as the court of first instance.

akin.ai.app / Contact: akin.ai.app@gmail.com