New version is great! Thanks for implementing my "next puzzle" idea! I have one lone suggestion now: when you complete a cluster, can you please fade out the applicable number in the hints on the side? That way, it's easy to see which groups a row or column is still missing, rather than having to carefully count what you've already got in the grid and cross reference it against the border hint. You can see at a glance what's next to place. Hope that makes sense. Thanks so much! Love your work.
In the upcoming update (4.3), you’ll be able to purchase a Boost called Line Detective that does exactly this! I hope you enjoy it, and thanks for the praise. I’m always open to more suggestions!