CDL Prep9.13 - App Store
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Publisher Description
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.
Please send any feedback or request to: CDLPrepApp@gmail.com. Thank you for reading, and good luck on your exams!
Version History Minor bug fixes and grammatical corrections. 9.13 Aug 9 Minor bug fixes and grammatical corrections. 9.12 Jun 20 Minor bug fixes and performance improvements. 9.11 May 16 Minor bug fixes and performance improvements. 9.10 Feb 14 Minor bug fixes and grammatical corrections. 9.9 Jan 2 Grammatical corrections, and fixed a rendering issue affecting some users. 9.8.2 11/19/2025 Minor bug fixes and performance improvements. 9.8.1 11/10/2025 Update for iOS 26 support. Minor bug fixes and performance improvements. 9.8 09/20/2025 User interface improvements, minor bug fixes, and grammatical corrections. 9.7 06/27/2025 Minor bug fixes and grammatical corrections. 9.6 06/01/2025 I've addressed some minor bugs and made a few grammar corrections. 9.5.5 04/18/2025 Minor bug fixes and grammar corrections. Implemented new Score interface while in Practice Mode. 9.5 01/12/2025 Minor bug fixes, updated broken manual links, and performance improvements. 9.4.1 11/16/2024 Minor bug fixes and performance improvements. 9.4 09/07/2024 Minor bug fixes and grammatical corrections. 9.2 04/17/2024 Minor bug fixes and grammatical corrections. 8.8 01/06/2024 Minor bug fixes and grammatical corrections. 8.7.5 09/02/2023 Minor bug fixes and grammatical corrections. 8.7.3 06/17/2023 Small number of bug fixes and grammatical improvements. 8.7.1 04/08/2023 Minor bug fixes and grammatical corrections. 8.5 01/07/2023 Minor bug fixes and grammar corrections. 8.4.1 11/04/2022 Minor bug fixes and grammatical corrections. 8.4 09/25/2022 Minor bug fixes and user interface improvements. 8.3.2 05/14/2022 Minor bug fixes and grammatical improvements. 8.3.1 02/12/2022 Minor bug fixes and UI improvements. 8.3 01/09/2022
About CDL Prep
The company that develops CDL Prep is Jeffrey Diaz. The latest version released by its developer is 9.13.
To install CDL Prep on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-10-14 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the CDL Prep as malware if the download link is broken.
How to install CDL Prep on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the CDL Prep is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After CDL Prep is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
Program Details
System requirements
Download information
Pricing
Version History
version 9.13
posted on 2026-10-14
Version History Minor bug fixes and grammatical corrections. 9.13 Aug 9 Minor bug fixes and grammatical corrections. 9.12 Jun 20 Minor bug fixes and performance improvements. 9.11 May 16 Minor bug fixes and performance improvements. 9.10 Feb 14 Minor bug fixes and grammatical corrections. 9.9 Jan 2 Grammatical corrections, and fixed a rendering issue affecting some users. 9.8.2 11/19/2025 Minor bug fixes and performance improvements. 9.8.1 11/10/2025 Update for iOS 26 support. Minor bug fixes and performance improvements. 9.8 09/20/2025 User interface improvements, minor bug fixes, and grammatical corrections. 9.7 06/27/2025 Minor bug fixes and grammatical corrections. 9.6 06/01/2025 I've addressed some minor bugs and made a few grammar corrections. 9.5.5 04/18/2025 Minor bug fixes and grammar corrections. Implemented new Score interface while in Practice Mode. 9.5 01/12/2025 Minor bug fixes, updated broken manual links, and performance improvements. 9.4.1 11/16/2024 Minor bug fixes and performance improvements. 9.4 09/07/2024 Minor bug fixes and grammatical corrections. 9.2 04/17/2024 Minor bug fixes and grammatical corrections. 8.8 01/06/2024 Minor bug fixes and grammatical corrections. 8.7.5 09/02/2023 Minor bug fixes and grammatical corrections. 8.7.3 06/17/2023 Small number of bug fixes and grammatical improvements. 8.7.1 04/08/2023 Minor bug fixes and grammatical corrections. 8.5 01/07/2023 Minor bug fixes and grammar corrections. 8.4.1 11/04/2022 Minor bug fixes and grammatical corrections. 8.4 09/25/2022 Minor bug fixes and user interface improvements. 8.3.2 05/14/2022 Minor bug fixes and grammatical improvements. 8.3.1 02/12/2022 Minor bug fixes and UI improvements. 8.3 01/09/2022
version 9.12
posted on 2026-07-26
Version History Minor bug fixes and grammatical corrections. 9.12 Jun 20 Minor bug fixes and performance improvements. 9.11 May 16 Minor bug fixes and performance improvements. 9.10 Feb 14 Minor bug fixes and grammatical corrections. 9.9 Jan 2 Grammatical corrections, and fixed a rendering issue affecting some users. 9.8.2 11/19/2025 Minor bug fixes and performance improvements. 9.8.1 11/10/2025 Update for iOS 26 support. Minor bug fixes and performance improvements. 9.8 09/20/2025 User interface improvements, minor bug fixes, and grammatical corrections. 9.7 06/27/2025 Minor bug fixes and grammatical corrections. 9.6 06/01/2025 I've addressed some minor bugs and made a few grammar corrections. 9.5.5 04/18/2025 Minor bug fixes and grammar corrections. Implemented new Score interface while in Practice Mode. 9.5 01/12/2025 Minor bug fixes, updated broken manual links, and performance improvements. 9.4.1 11/16/2024 Minor bug fixes and performance improvements. 9.4 09/07/2024 Minor bug fixes and grammatical corrections. 9.2 04/17/2024 Minor bug fixes and grammatical corrections. 8.8 01/06/2024 Minor bug fixes and grammatical corrections. 8.7.5 09/02/2023 Minor bug fixes and grammatical corrections. 8.7.3 06/17/2023 Small number of bug fixes and grammatical improvements. 8.7.1 04/08/2023 Minor bug fixes and grammatical corrections. 8.5 01/07/2023 Minor bug fixes and grammar corrections. 8.4.1 11/04/2022 Minor bug fixes and grammatical corrections. 8.4 09/25/2022 Minor bug fixes and user interface improvements. 8.3.2 05/14/2022 Minor bug fixes and grammatical improvements. 8.3.1 02/12/2022 Minor bug fixes and UI improvements. 8.3 01/09/2022 Made grammatical corrections and added support for Dynamic Type. 8.2.2 09/23/2021
version 9.11
posted on 2026-06-03
Version History Minor bug fixes and performance improvements. 9.11 May 16 Minor bug fixes and performance improvements. 9.10 Feb 14 Minor bug fixes and grammatical corrections. 9.9 Jan 2 Grammatical corrections, and fixed a rendering issue affecting some users. 9.8.2 11/19/2025 Minor bug fixes and performance improvements. 9.8.1 11/10/2025 Update for iOS 26 support. Minor bug fixes and performance improvements. 9.8 09/20/2025 User interface improvements, minor bug fixes, and grammatical corrections. 9.7 06/27/2025 Minor bug fixes and grammatical corrections. 9.6 06/01/2025 I've addressed some minor bugs and made a few grammar corrections. 9.5.5 04/18/2025 Minor bug fixes and grammar corrections. Implemented new Score interface while in Practice Mode. 9.5 01/12/2025 Minor bug fixes, updated broken manual links, and performance improvements. 9.4.1 11/16/2024 Minor bug fixes and performance improvements. 9.4 09/07/2024 Minor bug fixes and grammatical corrections. 9.2 04/17/2024 Minor bug fixes and grammatical corrections. 8.8 01/06/2024 Minor bug fixes and grammatical corrections. 8.7.5 09/02/2023 Minor bug fixes and grammatical corrections. 8.7.3 06/17/2023 Small number of bug fixes and grammatical improvements. 8.7.1 04/08/2023 Minor bug fixes and grammatical corrections. 8.5 01/07/2023 Minor bug fixes and grammar corrections. 8.4.1 11/04/2022 Minor bug fixes and grammatical corrections. 8.4 09/25/2022 Minor bug fixes and user interface improvements. 8.3.2 05/14/2022 Minor bug fixes and grammatical improvements. 8.3.1 02/12/2022 Minor bug fixes and UI improvements. 8.3 01/09/2022 Made grammatical corrections and added support for Dynamic Type. 8.2.2 09/23/2021 Updated links to state manuals and minor bug fixes. 8.2.1 09/22/2021
version 9.10
posted on 2026-02-14
Minor bug fixes and performance improvements.
version 9.8
posted on 2025-09-20
Sep 20, 2025
Version 9.8
Update for iOS 26 support. Minor bug fixes and performance improvements.
version 9.7
posted on 2025-06-27
Jun 27, 2025
Version 9.7
User interface improvements, minor bug fixes, and grammatical corrections.
version 9.6
posted on 2025-06-01
Jun 1, 2025
Version 9.6
Minor bug fixes and grammatical corrections.
version 9.5.5
posted on 2025-04-18
Apr 18, 2025
Version 9.5.5
I've addressed some minor bugs and made a few grammar corrections.
version 9.5
posted on 2025-01-12
Jan 12, 2025
Version 9.5
Minor bug fixes and grammar corrections. Implemented new Score interface while in Practice Mode.
version 9.4.1
posted on 2024-11-16
Nov 16, 2024
Version 9.4.1
Minor bug fixes, updated broken manual links, and performance improvements.
Disclaimer
Official App Store Link
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