About

Useful Kit is a small workshop of single-purpose tools. Each kit takes one question people actually search for, like "can these fish live together?" or "how do I round a cash total now?", and answers it with a free tool built on sourced, dated facts.

Some kits have an optional paid extra, such as a printable plan or a ready-made sign. The free tool always works on its own.

Spotted an error? Email flipprofithq@gmail.com. We fix mistakes and note the change on the kit's own site.