The free mock test
90 questions, six 20-minute sub-tests, five options; timer refereed by the server; no bank card.
Six twenty-minute sub-tests, timed by the server: the clock does not depend on the browser.
Own product · prepa600.com · open since 26 August 2026
Prépa 600: from the idea to the first user in 6 days.
An online preparation for the TAGE MAGE®, the admission test of French business schools. A free mock test, the full report, then 29 mock tests for €49, paid once.
Asked to ChatGPT
Our first source of clients.
phone · 21 September 20261 / 3
prepa600.com · today
The idea.
A complete, free mock test with the full report: score out of 600, six marks, time map. Elsewhere, it is sold. That is what brings people in.
0 € the first mock test, report included
The site, the next day.
Hosted, a form that collects, copy and visuals ready: from day two, an address to hand out and a method to read.
J+1 live
The test, written.
The six sub-tests of the official exam, six complete mock tests, and the platform end to end: accounts, server-side timer, reports, dashboard.
6 complete mock tests
One price.
€49, paid once, 4 months of access, no subscription; scholarship price €20. Checkout opens access within the second.
49 € paid once
The first user.
That same evening, a first account opens and a first mock test is taken. Six days between the idea and its first candidate.
J+6 first account
Found without ads.
Pages like this one are written to be read by AI assistants as much as by Google: they cite Prépa 600 among the first, and accounts open without a single ad. The bank grows: 2,700 questions, 30 mock tests.
2,700 questions written
What the candidate gets
A free mock test, a full report, 29 paid mock tests.
Four pieces, drawn as you scroll down. Every figure comes from the repository, recounted before each publication.
The question bank
2,700 hand-written questions, 30 mock tests. A statistical audit rejects a guessable bank; Logic is drawn in SVG, one reading per question.
96 / 96 sub-tests passing on 5 September 2026
A
B
C
D
E
Five letters in equal shares, never the longest or shortest option as the answer too often: a bank that cannot be guessed.
The report
Score out of 600 computed the way FNEGE does, six marks, time map question by question, blanks and their cost, the 90 corrections.
Compr.11/15
Calc.8/15
Rais.10/15
Cond.7/15
Expr.12/15
Log.9/15
Hover a cell: question, time, result
57 right24 wrong9 blank · 12 points given up
Illustrative example. A real report only exists after a test, on an account.
The next 29 mock tests
€49 incl. VAT for 4 months, paid once, no subscription; scholarship €20. Stripe, VAT included, at most three follow-ups, with a STOP.
49 €paid once4 months of access
The first mock test is free, report included. The next 29 open with a single payment.
The site, page by page: the test format, the 2026 marking scheme, how the score out of 600 is computed, the scores schools ask for, the method and the free mock test.
TAGE MAGE® is a trademark of FNEGE; Prépa 600 is an independent service, neither affiliated with nor endorsed by it.
- HTML
- JavaScript
- Node.js
- Vercel
- Supabase
- Stripe
- Resend
- Telegram
- Claude Code
- Test bench
- HTML
- JavaScript
- Node.js
- Vercel
- Supabase
- Stripe
- Resend
- Telegram
- Claude Code
- Test bench
And for you
A product to launch?
Site, accounts, checkout, follow-ups, dashboard: the same path, from the first file to the first sale. Price depends on the product, set after a first conversation.