Questions or problems? Email hello.cynapps@gmail.com. We reply within 2 working days. Seller based in Hong Kong.
If the book doesn't work on your device, or you're not happy with it, email us within 14 days of buying and we'll refund you in full.
A digital e-book file (EPUB) for personal use in Apple Books. Nothing is posted to you. Please don't share or resell the file. Text and illustrations © 2026 Cyn. All rights reserved.
Payments are handled by Stripe. We never see or store your card number. Stripe gives us your name, email address and country so we can send receipts and help with your order. We don't sell or share this information and we don't use tracking cookies.