Features
Everything in CertLighthouse points back to the source
Each study mode is built around one idea: you should always be able to see why an answer is right and where that comes from.
Study modes
Answer explanations
Why the right answer is right, why your pick and every other option is wrong, and the source that proves it. Free on every question.PBQ lab
Performance-based simulations you actually operate: router settings, a scripted command line, and matching exercises, graded rule by rule.Mock exams
Up to 90 questions in 90 minutes, sampled to CompTIA's domain weights, with flag and review and a full explanation review afterward.Flashcards and saved sets
Spaced-repetition decks by objective, plus sets you build yourself by saving questions as you study.Study plan
A 15-question diagnostic and your exam date turn into daily targets aimed at your weakest domains.
Built into every mode
- Works offline
- Questions, explanations, and evidence summaries download with the app's content, so you can study with no connection and sync later.
- Light and dark themes
- The app follows your device's appearance setting until you pick Light or Dark yourself.
- Accessible from day one
- Every simulation has a keyboard and screen-reader path, and right and wrong are always shown with an icon and a word, not color alone.
- Unlimited generated practice
- Subnetting, IPv6 notation, number conversions, ports, and RAID capacity, with worked steps computed for each problem.
Pick an exam to see what's covered
CompTIA A+ Core 1, CompTIA A+ Core 2, and CompTIA Network+ at launch.