About Excel Supreme

Who runs it

Danil Gorbunov writes, checks and maintains every exercise here. It is one person, and the address in the footer reaches them: danil.gorbunofff@gmail.com.

What this is

86 exercises across 16 skills. Each one is a single job you would meet in a real workbook. Total a column, flag the rows that miss a target, or look a price up from another sheet.

The exercises are ordered, so a group builds from its first exercise to its last. The 10 free exercises are open from start to finish, with their notes and their explanations. The rest open with a paid plan.

How the checking works

Grading runs in your browser. The checker reads the formula itself, not only the number it returns: it confirms the function you used and the cells you referred to. That is why typing the answer by hand is rejected, and why a correct total from the wrong range still fails.

Nothing you type is uploaded. The formula is checked on the page, so the site never receives your answers. Clearing your browser data clears the progress it holds.

Who it is for

Written for the person who already opens a spreadsheet and wants the formulas to come back without looking them up. You can type SUM without thinking, then stall on XLOOKUP's fourth argument, or on a COUNTIFS that returns zero.

Not for someone who has never used a spreadsheet, and not a course: there are no videos and no chapters to work through in order. It is also not for macros, Power Query or VBA, and not for Google Sheets or LibreOffice. The grader follows Excel's rules and one locale, so a formula that works elsewhere may be marked wrong here.

How the exercises are written

Each exercise is written by hand around one function or one habit, then tested. The expected formula has to pass, and a wrong one has to fail with a reason you can act on. Every screen names the function, the range or the cell it checks, and a rejected answer points at the rule that failed.

The notes name the syntax, the traps, and the error codes the function really returns. Where Excel and Google Sheets differ, they say so. No filler paragraphs, no invented statistics, and no claims about Excel that the checker cannot back up.

What it costs

• Free. The 10 exercises on the start page, with their notes and answer explanations. No card and no email.
• Paid. The rest of the track, for as long as a term runs. The pricing page has the full terms.

10 exercises are free forever, with no account and no card, and every payment carries a 100% refund guarantee inside 30 days. The other 76 come with the track, one price for all of them: $9.99 a month, $39.99 every six months or $59.99 a year.

Every plan renews for another term of the same length unless you cancel: a month, six months or a year, whichever you bought. Cancel from your account page in one click, and the time you already paid for runs to its end. The price does not change for the term you are in.

Excel Supreme is not affiliated with Microsoft. Excel is their product; the exercises and the checker are not.