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ExcelDojo
The Excel formula lab where you learn by doing, not watching
Most Excel courses teach you to watch. ExcelDojo makes you type. 90+ formulas. Each one has a live editable spreadsheet — type the formula, press run, get instant feedback. One HTML file. Works offline. No install, no account, no subscription. Includes game mode with XP, free-play lab, cheat sheet, and shortcuts reference. Built for anyone who has Googled the same formula twice and still cannot remember it.
Hey Product Hunt,
I am Danish, a personal trainer and entrepreneur based
in Southeast Asia. Yes, a personal trainer who built an
Excel tool. Let me explain.
The problem I kept running into was not unique to me.
I watched people in my network, clients, friends,
colleagues, all of them saying the same thing. They
knew they needed to get better at Excel. They watched
a YouTube tutorial. They read through a PDF cheat sheet.
And a week later they were back on Google searching the
exact same formula again.
The learning was not sticking because nothing was asking
them to actually do anything. Watching someone else type
a formula is not the same as typing it yourself and
seeing it work. That gap between knowing and doing is
where most Excel education lives and stays.
So I built something different.
ExcelDojo started as a simple idea. What if every formula
came with a live spreadsheet you had to actually use?
Not a screenshot of a spreadsheet. Not an embedded video.
A real editable table with sample data already loaded,
where you type the formula yourself and find out
immediately if you got it right.
The first version was rough. It covered about 10
formulas and had no real design. But every person I
showed it to immediately started clicking around and
typing things without being told to. That told me the
core interaction was right.
From there the scope grew. I added three difficulty
levels, a game mode with XP and streak bonuses, a
free-play lab for experimenting with your own data,
a cheat sheet, and a shortcuts reference. The whole
thing ended up as a single HTML file, 138 kilobytes,
that works entirely offline in any browser without
an account or install.
The constraint of keeping it as one self-contained
file turned out to be the best design decision I made.
It forced every feature to earn its place. Nothing
bloated, nothing unnecessary.
What I am most proud of is not the feature count. It
is that you can open this file, click on SUM, and
within 30 seconds you are typing a formula into a live
spreadsheet and getting feedback. That time to first
real interaction was the metric I cared about most.
ExcelDojo is available on Gumroad for 5.50 USD, a
one-time purchase. No subscription, no upsells.
If you try it, I would genuinely love to hear what
you think. The Product Hunt community has a track
record of feedback that actually improves products,
and I am here all day to respond.
Thank you for taking a look.
Danish
About ExcelDojo on Product Hunt
“The Excel formula lab where you learn by doing, not watching”
ExcelDojo was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #87 on the daily leaderboard. Most Excel courses teach you to watch. ExcelDojo makes you type. 90+ formulas. Each one has a live editable spreadsheet — type the formula, press run, get instant feedback. One HTML file. Works offline. No install, no account, no subscription. Includes game mode with XP, free-play lab, cheat sheet, and shortcuts reference. Built for anyone who has Googled the same formula twice and still cannot remember it.
On the analytics side, ExcelDojo competes within Productivity, Spreadsheets and Education — topics that collectively have 742.4k followers on Product Hunt. The dashboard above tracks how ExcelDojo performed against the three products that launched closest to it on the same day.
Who hunted ExcelDojo?
ExcelDojo was hunted by Danish Hakimi. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of ExcelDojo including community comment highlights and product details, visit the product overview.
Danish Hakimi