About us.

Who we are

Aptia Skills is a trading name of Opus Vault, an Australian business (ABN 85 543 288 407). It is run from Australia by one person, and every course is written, checked and maintained by us.

What we make

Practice courses with free parts you can use in your browser: short lessons, practice questions with a reason for every answer, and skills checks that show your gaps. Nothing you type in a practice test is sent to us.

What we are not

• Independent. We are not affiliated with, endorsed by or approved by any exam body, regulator or government. Their names appear only as plain text, to say which test a course helps with.
• Not real exam content. Every practice task is our own. We never use recalled, leaked or past exam questions.
• Practice, not a promise. We do not guarantee a pass, and we do not publish or claim any pass rate.

How we check our work

Written with AI from the official sources each course cites, and checked word for word against them. We keep a dated copy of every source, and every fact on a course page links to its source, so you can check it yourself.

Get in touch

Write to [email protected]. We read every message.