Need a hand with ClusterSum? Start with the Quick Start or How To Play guide, or watch the gameplay demonstration.
Common questions
Why is this group neutral? It is incomplete but still has room to grow. A checkmark means its size matches the number. A conflict marker means it is too large or lacks enough reachable space.
Can I undo Reset Board? Yes, while solving in the same session. Reset retains fixed clues and hinted values. A hint itself is a commitment: it locks its tile and clears undo history.
How do I choose another Daily puzzle? Use the date arrows or calendar. Daily does not need a Next Puzzle button; that button advances completed Journey levels.
What does a hint cost? The first three hints in each puzzle are free. Additional hints cost 40 coins. The button shows the price when it applies.
Where are my progress and coins stored? Locally on the device. Normal app updates retain them. Keep the app installed when updating; optional iCloud sync in version 1.1 and later can share progress between your devices.
iPad rotation
Version 1.1 and later supports portrait and both landscape orientations. If your iPad turns briefly then returns to portrait on an older build, update to version 1.1 when it becomes available. Also check iPadOS Rotation Lock.
iCloud troubleshooting
For version 1.1 and later, check Settings → iCloud Sync, confirm both devices use the same iCloud account, and choose Sync Now while connected. Sync is optional and must be enabled on each device. The first device supplies the starting shared coin balance; old balances are not added together. A paused sync keeps local progress. Account changes pause sync to avoid mixing saves.
If an unfinished board was edited independently, check Saved Board Versions before changing either save. With sync enabled, paid hints and streak protection require a connection; offline puzzle play and free hints still work.
Purchase help
Coin purchases use Apple's StoreKit. If a purchase is pending, let it finish using the same Apple Account, then reopen the app. If coins appear to be missing, contact support with the purchase date and order details so the issue can be investigated. The Restore Purchases control requests App Store synchronization; it is not a cross-device backup of local progress or previously spent coins.
Contact support
Email snake@snakejohns.com with the device model, iOS or iPadOS version, ClusterSum version, affected mode/date or Journey level, and what happened. Include a screenshot if it helps explain the issue.
Support requests are typically answered within two to three business days.