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CDL Prep icon

CDL Prep

Jeffrey Diaz

Category: Education
Sign in to watchView on the App Store (opens in a new tab)
Rankings updated

Price and ratings

Price
Free
Rating
4.7 out of 5
Ratings
6,936United States

Versions

Released
14 Apr 201610 years ago
Last update
1 month agoVersion 9.13
Requires
iOS 15.0 or later

Details

Size
6.8 MB
Languages
1
Website
jeffreydiaz.com (opens in a new tab)

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…

Countries1In 1 chart right now
Best rank now#74United States Free · Education
Ratings, 7 days—Needs a week of rating history
Longest chart run2 daysUnited States Free · Education

Competitors

Full chart

Top of Free · Education in United States. CDL Prep is #74 there. Changes are over 7 days.

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Store listing

How the app presents itself on the App Store. Select a screenshot to open it full size.

CDL Prep screenshot 1 of 8CDL Prep screenshot 2 of 8CDL Prep screenshot 3 of 8CDL Prep screenshot 4 of 8CDL Prep screenshot 5 of 8CDL Prep screenshot 6 of 8CDL Prep screenshot 7 of 8CDL Prep screenshot 8 of 8

What's new

Version 9.13 · 9 Aug 2026 · 1 month ago

Minor bug fixes and grammatical corrections.

Current rankings

Every chart this app is in right now, best position first.

CDL Prep chart positions
ChartRank24 h7 daysBestDays on chart
United States· Free · Education#74Change unknownChange unknown#742

Rank history

Higher on the chart is better: #1 is at the top.

Sign in to see 30 days, 90 days and all history.

United States · Free · Education: best #74, latest #74, over 3 snapshots since 8 Oct. No snapshots from 8 Oct to 9 Oct; the line joins the snapshots on either side.

United States · Free · Education: best #74, latest #74, over 3 snapshots since 8 Oct. No snapshots from 8 Oct to 9 Oct; the line joins the snapshots on either side.

Ranking events

Entries, big moves, #1s and new versions we've recorded.

No events recorded yet

Events appear as the app enters charts, moves 25+ places or ships a new version.