Commercial Transactions Disclosure
The following disclosure is provided under the Japanese Act on Specified Commercial Transactions.
Business name
SMILE TECHNOLOGY UNITED, INC.
Address
J-Pro Takashimadai North Bldg. 2H, 1-2 Sawatari, Kanagawa-ku, Yokohama-shi, Kanagawa 221-0844, Japan
Phone
+81-45-324-0563 (we also accept enquiries by email, below)
Representative
Ryo Takahashi
Contact
yhom@stu-inc.com
Price
Premium plan: JPY 500 / month (Japan) or USD 5 / month (outside Japan). One-time purchase via PayPay: JPY 500 for 30 days (Japan only). In-app purchase on the App Store or Google Play: JPY 600 / month. Prices include Japanese consumption tax. The current price is shown on the purchase screen.
Additional costs
You are responsible for any internet connection charges required to use the Service.
Payment methods
Web: card, Apple Pay, Google Pay, Link and PayPay. In-app purchase: the payment method registered with the App Store or Google Play.
When you are charged
Subscriptions are charged at purchase and on each renewal date thereafter. One-time purchases are charged at purchase.
Delivery
Access is granted immediately after payment completes.
Cancellation and refunds
Because this is digital content, we cannot provide refunds or returns once access has been granted. You may cancel a subscription at any time and keep access until the period you have already paid for ends; we do not issue pro-rated refunds. For purchases made through the App Store or Google Play, refunds are decided by the store, so please use the store’s refund process.
Contact
This page is translated into several languages; if there is any discrepancy, the Japanese version prevails.
Last updated: 2026-08-24