Fill blue circles and coral blockers so every numbered circle sees the correct number of neighbors. Nine line-of-sight puzzles, keyboard and pointer controls, undo, hints and locally saved progress. Source: https://github.com/Techdojo/0hn0 (MIT).

Every public app is built from a security-scanned skill and must pass a clean scan — skill and frontend — before it can be listed. Have a skill of your own? Turn it into an app — or read the step-by-step walkthrough.