Correctness is the only input
The index is your correct performance on scored quiz and practice exam questions. Reading a lesson, rating a flashcard, or completing an Adventure scene does not move it.
Mastery Index
What is the Mastery Index?
The Mastery Index is Revy's Tech Journey's internal study signal for a CompTIA track. It reads your correct answers across quiz and practice exam questions, weights them to the official exam blueprint, and shows where your CompTIA A+ readiness is strong and where it is thin. It is not a pass prediction.
Correct performance across RTJ questions, weighted to the official exam blueprint, with untested objectives kept at zero. This is not a pass prediction.
How is the Mastery Index calculated?
It takes your correct answers, weights each domain to the published exam blueprint, and keeps untested objectives at zero. Three rules keep it honest.
Weighted to the exam blueprint
Each domain is weighted to CompTIA's own published blueprint, so a heavy domain counts more than a light one. Objectives you have not tried yet are held at zero, not skipped.
Full exams stay separate
A full-length practice exam is at least 90 in-scope items. Those scores are reported next to the index as their own evidence. They are never blended into the number itself.
What do the evidence-quality labels mean?
Every Mastery Index carries a label describing how much evidence sits behind it. A high number on thin coverage still reads as thin. The label is how you tell a lucky streak from a solid, broad result.
No evidence yet
Start with a quiz or full practice exam.
Thin evidence
The index is based on limited objective and item coverage.
Broad practice evidence
Coverage is broad, but a required full practice exam is still missing.
Strong practice evidence
Coverage is broad and every required full practice exam is represented.
Practice benchmark met
Every required latest full practice exam met its directional benchmark. This is not a pass prediction.
Is the Mastery Index a pass prediction?
No. This is the part it is easy to want to believe, so here it is plainly. The Mastery Index is an internal, uncalibrated study signal. RTJ has not calibrated it against official CompTIA exam outcomes, your history is stored on your device, and repeated items can raise it. It cannot tell you whether you will pass.
The limitation, in the app's own words
Internal, uncalibrated study signal. Repeated or previously seen items can raise it.
Use it to spot the domains that need more work, then drill them with Study Mode and confirm with a full-length Practice Exam. For the full objective map of a track, start with the CompTIA A+ page. When you schedule is your call.
Questions.
What is the Mastery Index?+
The Mastery Index is Revy's Tech Journey's internal study signal for a CompTIA track. It is your correct performance across RTJ quiz and practice exam questions, weighted to the official exam blueprint, with objectives you have not tried yet held at zero. It is not a pass prediction.
Is the Mastery Index a pass prediction for the CompTIA exam?+
No. It is an internal, uncalibrated study signal. RTJ has not calibrated the number against real CompTIA exam outcomes, so it cannot tell you whether you will pass. Use it to find weak domains, not to decide when to schedule. Only you decide when you are ready.
How is the Mastery Index calculated?+
Correctness is the only input. RTJ takes your correct answers across quiz and practice exam questions, weights each domain to CompTIA's published blueprint, and holds untested objectives at zero. Evidence breadth never multiplies accuracy, and full-length practice exam scores are reported alongside the index, never blended into it.
Can the Mastery Index go up without real learning?+
Yes, and the page is honest about that. Repeated or previously seen items can raise it, and your history is stored on your device. That is exactly why every index carries an evidence-quality label, so a high number on thin coverage still reads as thin.
Does Adventure mode or flashcard practice change my Mastery Index?+
No. Only quiz and practice exam answers feed the index. Adventure completion, flashcard ratings, and Study Guide reading do not move it. They help you learn the material; the Mastery Index only measures scored answers.
How does this help me judge my CompTIA A+ readiness?+
Read the Mastery Index next to its evidence-quality label and your recent full-length practice exam results. A strong number backed by broad evidence across the blueprint is more meaningful than a strong number on a handful of questions. It is one input into a readiness decision, not the decision itself.
Build the evidence. Read the signal.
Answer real questions, watch your Mastery Index and its evidence-quality label take shape, and decide for yourself when you are ready. Free to start, no credit card.