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See the workflow before you buy

From “what should I practice?” to one focused attempt.

The product is a downloadable folder used locally with Bun and any editor. Here is the complete Choose → Implement → Review loop.

Try one exercise freeReturn to the sales page →
1

Choose

One command gives you the next exercise.

$ ./grind next
two-sum: Two Sum (core)
2

Implement

Work in typed starter files and run tests locally.

$ ./grind test two-sum
1 failing test · expected before implementation
3

Review

Record the attempt and return on schedule.

$ ./grind solve two-sum --independent
Review scheduled in 1 day