Legal

Terms of Service

Last updated: June 30, 2026

These Terms of Service (“Terms”) govern your use of the drum practice application “MekiMekiStickControl” (“Service”) provided by [Operator Name] (“we,” “us,” or “our”). Please read these Terms carefully before using the Service. By installing or using the Service, you agree to be bound by these Terms.

Article 1 – Service Description and Eligibility

  1. The Service is a mobile application that provides features including random drum sheet music generation, practice records, and a built-in metronome. It is available on iOS (App Store) and Android (Google Play).
  2. The Service is available to users of all ages. Users under the age of 13 must use the Service only with the consent and supervision of a parent or legal guardian.
  3. Use of the Service requires a compatible smartphone or tablet device. An internet connection is required for account features; some features are available offline.

Article 2 – Accounts and Authentication

  1. Accounts can only be created through Google Account or Apple ID authentication (“SSO Authentication”).
  2. A Guest Mode (no login required) is available, but key features including random sheet music generation and practice records require an account.
  3. Each user may create only one account. Creating multiple accounts is prohibited.
  4. You are responsible for maintaining the security of your account. Please contact us immediately if you suspect unauthorized access.

Article 3 – Prohibited Activities

You agree not to engage in any of the following activities when using the Service:

  1. Infringing the intellectual property rights of others, including copyrights and trademarks
  2. Reverse engineering, decompiling, disassembling, or otherwise attempting to derive source code from the Service
  3. Creating multiple accounts or using another person’s account without authorization
  4. Disrupting the normal operation of the Service, including by placing an excessive load on our systems
  5. Violating any applicable laws or public morals
  6. Creating or distributing harmful content through the Service
  7. Any other activity that we determine to be inappropriate

Article 4 – Content and Data

  1. In Phase 1 of the Service, all user-created data—including sheet music, practice records, and tags—is stored locally on your device only. No data is transmitted to our servers.
  2. Copyright in user-created data belongs to the user. Copyright in randomly generated sheet music belongs to us.
  3. If cloud storage functionality is added in a future update (Phase 2), we will notify users of any changes to data handling practices in advance.

Article 5 – Advertising

  1. The Service may display banner and interstitial advertisements delivered by third-party advertising networks including Google AdMob.
  2. Device identifiers (IDFA/AAID) may be used for ad delivery. Please refer to our Privacy Policy for details.
  3. A paid subscription plan (ad-free) is planned for a future update.

Article 6 – Account Deletion and Data Deletion

  1. You may delete your account at any time from the Settings screen within the app.
  2. Upon account deletion, the following data will be permanently removed:
    • Authentication information stored on Firebase Authentication
    • Local device data (SQLite database, AsyncStorage)
    • Any other user data associated with the Service
  3. Deleted data cannot be recovered. Please back up any important data before deleting your account.
  4. This Article is compliant with Apple App Store Review Guideline 5.1.1.

Article 7 – Changes and Termination of Service

  1. We may modify, add, or remove features of the Service without prior notice. For significant changes, we will provide reasonable advance notice.
  2. We may terminate the Service if circumstances so require. In that event, we will provide advance notice (aiming for at least 30 days) via in-app notifications or our website.

Article 8 – Disclaimer of Warranties

  1. The randomly generated sheet music is provided for practice purposes and does not guarantee musical accuracy or playability.
  2. We do not guarantee any particular improvement in your drumming skills as a result of using the Service.
  3. The Service may perform differently depending on your device, operating system version, and environment. We do not guarantee operation on all devices and environments.
  4. To the extent permitted by law, we are not liable for any damages arising from your use or inability to use the Service, except where such damages result from our own willful misconduct or gross negligence.

Article 9 – Intellectual Property

  1. All copyrights, trademarks, and other intellectual property rights in the Service belong to us.
  2. You may not reproduce, repurpose, or distribute the content of the Service beyond the scope expressly permitted by these Terms.

Article 10 – Changes to These Terms

  1. We may update these Terms from time to time.
  2. For significant changes, we will provide advance notice of the updated Terms and their effective date via in-app notifications or our website.
  3. Updated Terms take effect on the stated effective date. Your continued use of the Service after the effective date constitutes acceptance of the updated Terms.

Contact Us

For questions regarding these Terms, please contact us at:

Email: [Contact Email Address]