CDL Prep: Complete Master

Prepare for the written CDL knowledge tests - General Knowledge, Air Brakes, Combination Vehicles, and every endorsement - in one app that needs no account.

CDL Prep: Complete Master combines a structured reference guide, explained practice, full-length simulations, spaced repetition, and exam-day pacing tools.

PRACTICE EVERY KNOWLEDGE TEST

• 520 practice items across 65 essential concepts
• Nine study modules: General Knowledge, Air Brakes, Combination Vehicles, Hazardous Materials, Tank Vehicles, Doubles and Triples, Passenger Transport, School Bus, and Vehicle Inspection
• Answer choices reshuffle while the correct answer keeps a stable identity
• Clear written explanations and stable question IDs for issue reporting
• Module practice, 10-question Quick Practice, bookmarks, and a Daily Question
• Free 22-question balanced baseline with a recommended next step

SIMULATE A FULL EXAM

• 50 scored questions plus 5 unscored pretest questions
• Fixed blueprint weighting across the nine modules rather than an easier mix
• 90-minute timing option for pacing practice
• Flag questions, review unanswered items, and use the question navigator
• Autosave answers, flags, option order, and elapsed time for safe resume
• Review missed questions and module results after submission

STRENGTHEN WEAK AREAS

• Concept-level SM-2 spaced repetition
• Fresh sibling questions help reduce memorization by position
• Adaptive Weak Areas sessions use accuracy, coverage, and review due dates
• A maintenance mix keeps stronger modules active

STUDY WITH A COMPLETE TOOLKIT

• 65 concise lessons, one idea each
• Key takeaways and common exam traps for every topic
• Search across lessons and key points
• Pomodoro 25/5 and 50/10 focus sessions
• Separate Exam Clock for pacing practice
• Optional daily local study reminder

TRACK PROGRESS PRIVATELY

• Accuracy, response pace, study time, streak, mastery, and due reviews
• Module-level results and seven-day activity
• Full-exam average, best score, completion count, and average time
• Local backup and restore for progress, bookmarks, schedules, settings, and an active exam

No account is required. Without one, learning data stays on your device unless you copy a backup yourself. Signing in is optional and carries your review schedule, bookmarks, and exam history between your devices and the browser.

HOW ACCESS WORKS

Every feature is open for seven days from first launch. After that, a single one-time purchase unlocks the app permanently. There is no subscription and no recurring charge.

IMPORTANT SCOPE

This app covers the written knowledge tests. The skills test - the pre-trip inspection performed aloud, the basic control manoeuvres and the road test - is scored in person by an examiner, and your state's manual governs it. Requirements, fees and question counts vary by state; always consult your current state CDL manual.

This app is an independent study aid. It is not affiliated with, endorsed by, or sponsored by the Federal Motor Carrier Safety Administration, any state licensing agency, or any testing provider, and it contains no copied secure examination questions.

Terms of Service:
https://b19.co.jp/terms-of-service/

Privacy Policy:
https://b19.co.jp/privacy-policy/