Seller幸川卓実 (sole proprietor) Business addressDisclosed without delay upon request. Phone numberDisclosed without delay upon request. PriceFree ($0) / Basic ($12 per month) / Pro ($25 per month). The final amount and currency are shown on the pricing page and Stripe Checkout. Other feesInternet connection and communication charges are the customer’s responsibility. Payment methodsCredit card and other payment methods supported by Stripe Payment timingSubscription fees are charged at the start of each billing period and automatically renew until cancellation. Service deliveryDigital service. Available after account creation; paid features are enabled after payment confirmation. CancellationYou can cancel anytime from the billing management screen (Stripe Billing Portal). Access continues until the end of the current billing period. Refund policyIn principle, we do not provide refunds or prorated credits, except where required by applicable law. If you believe you were charged in error, contact support with your invoice or billing ID. RequirementsDesktop app: macOS 12+ (Apple Silicon / Intel) and a TeX distribution. Online/AI features require an internet connection.