Keep your progress, XP and badges across devices. Start with seven free exercises. No credit card needed.
Enter your email and open the link we send to finish creating your account. Already have an account? The same link signs you in.
Type a formula in the formula bar and press Check. The grader runs your formula on the live data and compares the result. Press New numbers to reshuffle the data and prove you didn't memorize the answer.
The first 7 exercises are free. Pro unlocks exercises 8 to 28, including VLOOKUP, XLOOKUP, INDEX MATCH and dates, plus timed mock tests and progress saved across devices.
Earn XP for every solve, a bonus for first try, and another for passing after New numbers. See your progress, badges and the leaderboard.