Terms of Use

Article 1 (Definitions)

For these Terms of Use (“Terms”), the following definitions apply:

  1. “Service” means the app “Arujikan” (Japanese Walking Timer) and all related services we provide.
  2. “We” means Engineer BA-Sulto, the provider of the Service.
  3. “User” means any individual who uses the Service after agreeing to these Terms.
  4. “Content” means all text, images, and data provided through the Service.

Article 2 (Agreement to the Terms)

  1. Users must read these Terms in full and agree before using the Service.
  2. Starting to use the Service constitutes agreement to these Terms.
  3. If a minor uses the Service, a parent or legal guardian’s consent is required.

Article 3 (Description and scope of the Service)

  1. The Service is an interval walking timer (alternating brisk and slow walking) and continuous walking timer app, offering training mode suggestions, voice guidance, reminder notifications, sharing, and related features based on the user’s age, gender, and exercise experience.
  2. Timer settings and training suggestions are for reference only; we do not guarantee exercise outcomes.
  3. We may change, suspend, or discontinue the Service after giving prior notice to users, except in urgent or unavoidable cases.

Article 4 (Fees and in-app purchases)

  1. The core features of the Service are available free of charge. On the free plan, advertisements (Google AdMob) are displayed to support the Service.
  2. The Service includes in-app purchase features such as the Ad-Free plan and Pro plan (subscriptions and one-time purchases). The contents and prices of each plan follow the information displayed on the in-app purchase screen, which is based on the Apple App Store or Google Play Store display.
  3. In-app purchase payments are processed by the payment method associated with your Apple ID or Google account, according to each store’s procedures.
  4. Subscription plans (annual / monthly / weekly) automatically renew under the same terms and are billed to your store account unless auto-renewal is turned off at least 24 hours before the end of the current billing period.
  5. Subscriptions can be canceled from the store settings where you purchased (iOS: Settings > Apple ID > Subscriptions; Android: Google Play Store > Payments & subscriptions). Uninstalling the App does not cancel your subscription.
  6. Due to the nature of digital content, we generally do not provide direct refunds. For refunds, please apply directly to Apple or Google under each store’s refund policy.
  7. If a free trial is offered, unless you cancel during the trial period, the plan will automatically convert to a paid plan and be charged at the end of the trial.

Article 5 (Prohibited conduct)

Users must not:

  1. Violate laws, public order, or morals, or engage in criminal-related conduct
  2. Infringe our or third parties’ intellectual property rights (copyright, trademark, etc.)
  3. Engage in unauthorized access or impose excessive load on the Service’s servers or networks
  4. Reverse engineer, decompile, disassemble, or otherwise analyze the Service
  5. Use bots, scrapers, or similar tools for bulk access or data collection
  6. Impersonate others or submit false information
  7. Interfere with operation of the Service or harm other users
  8. Violate Apple or Google app store policies

Article 6 (Intellectual property rights)

  1. All intellectual property rights in Content (text, images, design, programs, etc.) belong to us or our licensors.
  2. Users may use Content only for personal purposes within the scope intended by the Service.

Article 7 (Disclaimer)

  1. We do not warrant the accuracy, safety, reliability, or usefulness of the Service.
  2. The Service is a fitness and wellness aid, not medical treatment or diagnosis. Exercise at your own risk and in line with your health.
  3. We are not liable for damages due to maintenance, server or network failures, cyberattacks, natural disasters, or other force majeure.
  4. We are not liable for any trouble (including injuries sustained during exercise) arising from use of the Service.
  5. Even if we are liable due to reasons attributable to us, our total liability is capped at JPY 5,000.

Article 8 (Restrictions on use)

  1. If we determine that a User has violated or may violate these Terms, we may restrict use or take other measures without prior notice.
  2. We are not liable for any damage arising from such measures.

Article 9 (Changes to the Service)

  1. We may change or discontinue all or part of the Service for business reasons after giving prior notice to users.
  2. If the Service ends, we will notify you at least 30 days in advance via in-app notice or email.

Article 10 (Changes to the Terms)

  1. We may change these Terms without individual consent when:

    • the change is in the general interest of Users; or
    • the change does not contradict the purpose of the contract and is reasonable in light of the necessity and content of the change.

  2. Revised Terms will be notified in advance via in-app notice or email, and take effect on the effective date stated in the notice.

Article 11 (Governing law and jurisdiction)

  1. These Terms are governed by the laws of Japan.
  2. Any dispute shall be subject to the exclusive jurisdiction of the summary court or district court having jurisdiction over our location in the first instance.

Article 12 (Severability)

If any provision of these Terms is held invalid or unenforceable, the remaining provisions remain in full force and effect.

Last updated: April 19, 2026