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UreyukiBox Terms of Service

Last updated: 2026-08-09

These terms set out the conditions for using the Shopify app "UreyukiBox" (the "Service") provided by Mai Sato ("we"). Everyone who uses the Service (the "user") is deemed to have agreed to these terms.

Article 1 (Scope)

These terms define the conditions on which the Service is provided and the rights and obligations between us and the user, and apply to every relationship between the user and us concerning use of the Service.

Article 2 (Registration)

  1. The user is deemed to have agreed to these terms by installing the Service on their Shopify store.
  2. We may decline an application to register where the user falls under any of the following.
    • The user has previously breached these terms
    • The user is an antisocial force or similar
    • We otherwise judge the registration to be inappropriate

Article 3 (Fees and payment)

  1. The user shall pay the fees we set for the Service through the Shopify Billing API.
  2. The Free plan is free of charge indefinitely. Unless we separately present a different free period as part of campaign terms, paid plans from Starter upwards include a 14-day free trial on first subscription, after which billing begins automatically.
  3. The standard 14-day free trial is available once in total per store. If you switch plans after the trial starts, or resubscribe after cancellation, only the days remaining until the originally recorded trial end apply; the free period does not restart at 14 days. If no days remain, billing applies from the new subscription.
  4. Fees already paid are not refundable for any reason, except under the migration guarantee in Article 7.

Article 4 (Prohibited conduct)

When using the Service, the user must not do any of the following.

  1. Acts that violate laws or public order and morals
  2. Acts that infringe the intellectual property rights of us, other users or third parties
  3. Reverse engineering, decompiling or disassembling the Service
  4. Placing an excessive load on the networks or systems of the Service
  5. Attempting unauthorised access
  6. Any other act we judge to be inappropriate

Article 5 (Suspension of the Service)

We may suspend or interrupt all or part of the Service without prior notice to the user where we judge any of the following to apply.

  1. Maintenance, inspection or updating of the systems behind the Service
  2. Provision of the Service becomes difficult due to earthquake, fire, power failure, natural disaster or other force majeure
  3. We otherwise judge that provision of the Service is difficult

Article 6 (About the demand forecasting feature)

  1. The Service generates reorder reminders from the user's past sales history. These are statistical estimates based on sales velocity and are not a guarantee of future sales.
  2. Decisions on ordering, purchasing and stock adjustment made on the basis of forecast results are the user's own responsibility, and we accept no liability for forecast accuracy.
  3. The user shall treat the forecasting feature as supporting information and make final decisions by considering it together with other information.

Article 7 (Stocky migration guarantee)

  1. The Service provides data migration in connection with the end of support for the official Shopify app "Stocky" (August 31, 2026).
  2. We will make a good-faith attempt to copy the Stocky API records supported by the Service, including suppliers, purchase-order parents and lines, stock-adjustment parents and lines, purchase tax types and their API payloads (excluding Stocky rows explicitly marked for sales tax), but migration may not complete due to changes in the Stocky API, network failures, misconfiguration by the user and similar causes.
  3. Where migration fails to complete for reasons attributable to us, we will refund in full the fees the user paid for the billing month immediately following the migration.
  4. This guarantee applies only for the period in which the Stocky API is accessible (until August 31, 2026).
  5. The guarantee in the preceding paragraphs applies only to copying Stocky data through the Stocky API. Standalone Stocky CSV imports, Order limits/Statistics table imports and evidence imports are outside the scope of this guarantee.
  6. If a Stocky CSV, Order limits/Statistics table or evidence import fails to complete, we do not refund fees or provide any other compensation. Whether an import succeeds depends on the format and contents the user supplies (column layout, notation, character encoding and so on) and on Stocky's export behaviour, none of which we control.

Article 8 (Disclaimer of warranties and limitation of liability)

  1. We make no warranty that the Service fits any particular purpose of the user, that it has the functionality, accuracy or usefulness the user expects, that the user's use of the Service complies with laws or industry rules applicable to the user, or that it will be free of defects.
  2. We accept no liability for any damage suffered by the user arising from the Service, except where caused by our wilful misconduct or gross negligence.
  3. Even where we are liable, compensation is capped at the amount of fees the user paid in the month in which the event occurred.

Article 9 (Handling of data)

  1. We store the user's data in a database in the Fly.io Tokyo region, to the extent needed to provide the Service.
  2. The Service does not currently provide a single CSV export of all data. Before uninstalling the app, users should save purchase orders and any other data for which an export is available in the relevant screen.
  3. If the user uninstalls the app, we delete data tied to that store after receiving the store-data erasure request that Shopify normally sends about 48 hours later. Records that must be retained by law, accounting or referral-attribution records anonymised so they no longer directly identify the store, and the used-state and minimum necessary timestamps stored under a keyed hash of the store identifier to prevent repeated free-trial or campaign benefits are excepted.
  4. Details of how data is handled are governed by our separate Privacy Policy.

Article 10 (Changes to these terms)

We may change these terms at any time without notice to the user where we judge it necessary. The amended terms take effect when posted on our site.

Article 11 (Governing law and jurisdiction)

  1. These terms shall be interpreted under the laws of Japan.
  2. In the event of a dispute concerning the Service, the court with jurisdiction over the location of our head office shall be the exclusive agreed court of first instance.

Mai Sato (trading as Mumu Labo)
Last updated: 2026-08-09