Prep built around how API inspector exams really work
API exams aren't memory tests alone. They give you a thickness reading, a WPS or a tank survey and ask you to apply the right code rule, closed book and open book. We built APIInspectorExam around that.
How we write questions
We don't use leaked or "recalled" exam questions. Each question is written from API's published Body of Knowledge and the editions listed on the effectivity sheet for that exam, then checked against the code paragraph or calculation it tests. The working is shown in the explanation, so you can check our work.
How we keep it current
API publishes a new effectivity sheet for each set of exam windows, and the codes behind it change edition. We review every exam page against the current sheets and API's exam pages and show when it was last checked (currently November 2026).
How we fit with the code documents
The codes and standards on the effectivity sheet are your core reading, and they appear as on-screen PDFs in the open-book part. APIInspectorExam adds what most candidates say they're missing: lots of exam-style practice, timed mock exams, spaced-repetition flashcards, a mistakes bank and a Readiness Score that tells you when you're ready.
What you get
- A free practice test for every exam, and a free account that saves your results
- 3,000 practice questions per exam, organized topic by topic, and 6 full-length timed mock exams (paid)
- 60 comprehensive key notes and 800 flashcards with spaced repetition per exam, sorted by topic, plus mind maps (paid; the first notes set is free with an account)
- A mistakes bank, detailed reports and the Exam Readiness Score (paid)
- Video lessons as they release, and five bonus guides (paid)
Our guarantee
Pass Guarantee: complete the full prep for your exam (every question, every study topic, 2 timed simulations at the pass mark and a Readiness Score of 80), then sit your exam within 60 days while your access is active. If you don't pass, we refund 100% of what you paid. Details.
Contact
Questions about an exam, a question you think is wrong, or your account: [email protected]. We reply within one business day.
APIInspectorExam is not affiliated with the American Petroleum Institute (API), ASME or Prometric.