Pro plan

Everything in Pro

One subscription. SQL and Google Sheets. Built for people who want to get hired or get better at work.

SQL — 72 exercises

  • JOINs (inner, left, multi-table)
  • Aggregations and GROUP BY / HAVING
  • Subqueries and correlated queries
  • Window functions (RANK, ROW_NUMBER, running totals)
  • CTEs and recursive queries
  • String, date, and CASE logic
  • Interview-style problems

Google Sheets — 91 exercises

  • LOOKUP family (VLOOKUP, XLOOKUP, INDEX/MATCH)
  • Conditional logic (IF, IFS, AND, OR, SWITCH)
  • Text functions (LEFT, MID, TEXTJOIN, REGEX)
  • Math and conditional sums (SUMIF, SUMIFS, SUMPRODUCT)
  • Date and time functions
  • Array formulas (FILTER, SORT, UNIQUE, QUERY)
  • Stats (MEDIAN, PERCENTILE, STDEV)

Also included

  • Instant feedback on every exercise
  • Progress saved to your account
  • Interview prep track
  • Tips that explain the concept, not just the answer
  • New exercises added over time
  • 14-day refund window
See pricing