CDL Prep
CDL Prep Summary
CDL Prep is a ad-supported Android app in the Education category, developed by Jeffrey Diaz. First released 11 years ago(Jun 2014), the app has accumulated 1.3M+ total installs and 5.4K ratings with a 4.62★ (excellent) average rating.
Recent activity: 2.8K installs this week (13.5K over 4 weeks) showing steady growth , and 10 new ratings this week (41 over 4 weeks) with stable momentum. View trends →
Data tracking: SDKs and third-party integrations were last analyzed on Dec 29, 2025. The app's network data flows (API traffic to/from the app and its SDKs) were last crawled on Aug 14, 2025.
Store info: Last updated on Google Play on Jan 1, 2026 (version 170).
CDL Prep was last scanned for SDKs 2025-12-29. Below is the overview of third party companies detected in the app. The full list of raw SDKs, app permissions and unknown SDKs is available here.
Firebase
Google4.62★
Ratings: 5.4K
Screenshots
App Description
Pass your state General Knowledge CDL exam with the help of CDL Prep.
CDL Prep is the best way to prepare for the Commercial Drivers License General Knowledge, and various endorsement exams. CDL Prep contains questions on the following topics: General Commercial, Air Brakes, Combinations, Hazmat, Passenger, Tanks, School Bus, and Doubles/Triples.
Features:
1. Over 500 questions to practice with.
2. Exam Mode - 60 minutes to answer 50 randomly chosen questions, or 40 minutes to answer 20 to 30 questions on endorsement topics. At the end, review your score and any incorrect answers.
3. Practice Mode - Answer questions and receive instant feedback if you answered incorrectly.
4. Answer Randomization - Answers to questions will not always be in the same position.
5. Performance tracking - Review your performance on every question. Red = You have an average score less than 70%, Orange = You have an average score between 70-89%, Green = You have an average score of 90% and above.
Please send any feedback or request to: CDLPrepApp@gmail.com. Thank you and good luck on your exams!