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X MAXIMUS LABS, S.L. · Madrid

A small studio that does one thing obsessively

We build apps for passing official exams. The obsession is traceability: if a question claims something, it has to be able to point at the exact article and paragraph it came from.

Why it exists

Licensing exam prep is sold as tests copied from one another, with no sources and often out of date. The cost is not paid by whoever sells them: it is paid by the person who walks into the exam with an answer that was correct three reforms ago. Our answer to that is not more content — it is content with provenance.

How a question is made

  1. We find the rule in force and read the part that governs: the resolution in the state gazette, the European regulation, the authority’s guide. The exam format, the time limit, the number of options and the pass rule all come from there.
  2. The question is written with its explanation and, on top of that, the reason each wrong option is wrong. Knowing why B is wrong teaches more than knowing that A is right.
  3. The literal quote from the source is stored. An automated check confirms that the fragment exists word for word in the cited document; if it does not match, the question cannot ship.
  4. The mock is calibrated with the real exam’s formula, penalty included. A simulator softer than the real paper lies in the most expensive direction.

What is published

Four Spanish exam apps with 1,260 verified questions between them, plus two apps outside that line. Two more, for the United Kingdom, are finished and awaiting publication.

  • Security guard (Spain) — 551 questions, Ministerio del Interior · Policía Nacional
  • Rural guard (Spain) — 369 questions, Guardia Civil · SEPROSE
  • Drone A1/A3 — 218 questions, AESA · Reglamento (UE) 2019/947
  • Drone A2 — 122 questions, AESA · Reglamento (UE) 2019/947
  • SpainHub — Free
  • Rostik — Free download, with in-app purchases
  • UK Work Licence Tests 2026 — 251 questions · In the works
  • Life in the UK Test 2026 — 240 questions · In the works

What we do not do

  • We do not ask for a sign-up or an email to let you study.
  • We use no analytics, no advertising and no ad identifiers.
  • We do not upload your progress to any server.
  • We do not sell courses, certificates or promises of a place. Passing inside the app accredits nothing with any authority.

Contact

X MAXIMUS LABS, S.L.
info@xmax.es

Full company details are in the legal notice.