CDL Prep

Name: CDL Prep
Rating: 4.5592885 (5763 reviews)
Author: Jeffrey Diaz

Jeffrey Diaz

★ 4.6 (5,763 ratings)

⬇ 1,000,000+ downloads

Est. actual: 1,493,063

Free

Released: Jun 11, 2014

No in-app purchases

Contains ads

Rated: Everyone

Signals

4 this week · 3 positive All of this week's signals →

📈Last 7 days +4.4K installs — 18% faster than the week before (+3.7K) · 527/day since Sep 26
🏆Among Education apps top 1% by installs gained this week (1603 peers growing)
⭐Rating steady at ★ 4.56 since Sep 26
🛠Updates actively updated · updated 11 days ago · every ~84 days (2 updates tracked)

Installs since launch

+23,697 installs · +59 ratings since Sep 26

Update history

9.14 Oct 31, 2026

Minor bug fixes and performance improvements.

9.13 Aug 8, 2026 · seen Sep 26, 2026

Minor bug fixes and grammatical corrections.

CDL Prep is an education app by Jeffrey Diaz with 1,000,000+ downloads (about 1.5M estimated). +4.4K installs in the last 7 days. Rated 4.6 from 5.8K ratings. Released Jun 11, 2014. Install growth, rank history, SDKs and ad networks.

From the store listing: “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…”