500 practice questions, PBQ-style drills, full study guides, flashcards, mastery tracking, and timed practice exams. One price. Yours forever.
Real screenshots from the CompTIA Security+ app. Every CertCrush app has the same engine.
All study modes, organized by exam domain. Jump straight to guides, practice, PBQ drills, flashcards, or a timed exam. Your progress follows you between sessions.
Every question is tied to a specific exam objective and domain. The question counter, domain tag, and objective ID are visible so you always know what you're drilling. Save questions to review later.
Every question has a detailed explanation that teaches the underlying concept. Not just "B is correct" — you learn why B is correct and why the other options are wrong.
Complete study material for every exam objective. Key terms, exam tips, and practical frameworks. Searchable by objective ID, term, or concept. Each section has direct practice and save actions.
Performance-based questions that go beyond multiple choice. Classify scenarios into categories, arrange steps in the correct order, or match concepts. Randomized pools so you can repeat without memorizing the sequence.
Every acronym and term you need for exam day. Each card shows the full expansion and what it actually does in practice. Swipe through all or filter by domain.
Per-domain accuracy with mastery bands: New, Weak, Improving, Ready. Track progress at the individual objective level. The app shows you exactly where you need more work before exam day.
Full-length timed practice exams matching real conditions. Choose your question count and timer. Randomized questions from all objectives. Domain-by-domain scoring with a pass/fail assessment when you finish.
Every question is tied to a specific exam objective and weighted to match the real exam distribution. You study what the exam actually tests.
Classify, order, and match scenarios with randomized item pools. The question type most apps skip because it's hard to build. We built it.
Actual teaching content for every exam objective. Key terms, exam tips, practical frameworks. Searchable by concept, term, or objective ID.
New, Weak, Improving, Ready. Per-domain accuracy tracking at the individual objective level. You see exactly where you need more work.
Timed practice exams matching real conditions. Configurable question count and timer. Domain-by-domain scoring with pass/fail assessment.
Every acronym and key term on the exam. Full expansion plus what it actually does. Study all or filter by domain. Bookmark the ones you keep missing.
Every practice app I tried had the same problems: wrong answers marked correct, zero explanations worth reading, subscription traps, and no PBQ practice at all. I built CertCrush because the bar was on the floor.
$14.99 once. No subscription. No ads. No account required. Works completely offline. If you find a wrong answer, I want to know.
Built by Jeremiah Spears — 7 years supporting 200+ law firms and CPA practices on Microsoft 365. JGS Software, a division of JGS Cloud Compliance LLC.