Last updated: July 31, 2026
Need a hand with Zen Shikaku? Email us and a real person will get back to you, usually within two business days.
Chengdu Zen and Bit Technology Co., Ltd.
Tianfu New Area, Chengdu, Sichuan, China
To help us answer faster, please include your device model, your iOS version, and the level number you were on. If your question is about a purchase, a screenshot of the App Store receipt email helps a lot.
Drag from a number to draw a rectangle. Each rectangle must contain exactly one number, and that number tells you the rectangle’s area — a 6 covers six cells, as 1×6, 2×3, 3×2 or 6×1. The board is done when every cell belongs to exactly one rectangle. Every puzzle has exactly one solution and can always be reached by logic alone, never by guessing. There are no timers and no lives — take as long as you like.
Removing ads switches off the pop-up ads that appear between levels. The optional videos you tap yourself — to earn hints — stay available on purpose, so you can still earn hints for free.
If the between-level ads are still appearing, open Settings → Restore Purchases inside the game while signed in with the same Apple Account you bought with.
Go to Settings → Restore Purchases. This restores the “Remove Ads” entitlement at no charge. Coin packs and hint packs are consumable items: once they are spent in the game they cannot be restored.
Progress is stored on your device, not on our servers. Deleting the app, resetting your device, or moving to a new device will clear it, and we are not able to recover it. Paid non-consumable entitlements such as “Remove Ads” can still be restored as described above.
All payments are handled by Apple, so refunds go through Apple too. Request one at reportaproblem.apple.com. We cannot issue refunds directly, but write to us if something went wrong and we will help you sort it out.
Reopen the game while connected to the internet — pending purchases are delivered automatically on launch. If the items are still missing after a restart, email us with the receipt and we will make it right.
Open Settings → Ad Choices inside the game. You can also manage tracking system-wide in iOS Settings → Privacy & Security → Tracking.
Yes. Zen Shikaku is free to download and play. Optional in-app purchases (coin packs and “Remove Ads”) are available if you want them, and the game is fully playable without spending anything.
No. Levels are generated on your device and play fine offline. A connection is only needed for in-app purchases, restoring purchases, and optional reward videos.
Please tell us — we read every message. Bug reports with a screenshot or a short screen recording are especially welcome.