Terms of use

Using Kasan Kurosu

By playing Kasan Kurosu on the web, iPhone, iPad or Android, you agree to these terms. If you don't agree, please don't use it. You can play without an account; if you make one, keep your sign-in details to yourself.

Free and Pro

The free version includes a set of Classic puzzles, unlimited Mini puzzles, a starter set of Shaped puzzles, today's daily puzzles and the last 7 days of them, and every tool and hint.

Kasan Kurosu Pro is a one-time purchase, not a subscription. You pay once and there is nothing to renew or cancel. Pro unlocks the full puzzle bank, every Shaped puzzle and the full daily archive. When you are signed in, Pro bought on any platform works on all of them. Use Restore purchases in the app to bring it back on a new device.

Prices are shown in the app before you buy and may differ by store and country. On the web, Paddle sells Pro as our reseller and handles payment, tax and receipts. In the apps, Apple or Google does. Their terms apply to the payment.

What we promise

• No ads, now or later.
• Nothing you buy is ever taken away. We won't move features you paid for into a new purchase.
• No coins, energy, timed offers or other ways to make you pay more.
• Every puzzle has exactly one solution reachable by logic.

Refunds

For web purchases, email support@kasankurosu.com and we will arrange a refund through Paddle. For purchases in the App Store or Google Play, refunds go through Apple or Google under their policies. Nothing here limits rights you have under consumer law.

Fair use

Please don't attack, overload or reverse engineer our servers, scrape the puzzle bank, or resell our puzzles. The puzzles, text and design of Kasan Kurosu belong to us. You are welcome to share links to puzzles and your results.

Your account

You can delete your account at any time in Settings; deletion completes within 24 hours. If an account is used to abuse the service, we may suspend it, and we will tell you why.

Changes and availability

We keep improving the game, so features may change. We aim to keep it running smoothly but can't promise it will always be available or error-free. If we ever need to change these terms in a way that matters, we will tell you in the app first.

Liability

Kasan Kurosu is provided as is. To the extent the law allows, we are not liable for indirect losses, and our total liability to you is limited to what you paid us in the last 12 months.

Contact

Questions about these terms: support@kasankurosu.com.