# CDL Permit & Pre-Trip Lab — CDL Prep, Brake & Walkaround

> CDL Prep, Brake & Walkaround (iPhone/iPad app by 福赐 林.)

- Source: https://appshunter.io/ios/app/cdl-permit-and-pre-trip-lab/id6804408242 (this page in markdown: same URL + `.md`)
- Developer: [福赐 林](https://appshunter.io/developer/6789946002)
- Category: Education, Reference
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English
- Released: 2026-08-25
- Data updated: 2026-08-29
- User reviews in markdown: https://appshunter.io/ios/app/cdl-permit-and-pre-trip-lab/id6804408242/reviews.md

## What is CDL Permit & Pre?

Prepare for the commercial learner's permit and practice the inspection calls that matter around a real vehicle.

CDL Permit & Pre-Trip Lab includes:

- 320 original questions across eight permit and endorsement routes
- General Knowledge, Air Brakes, Combination, Tank, Doubles/Triples, Passenger, School Bus and Pre-Trip coverage
- Original explanations and source keys for every question
- 50-question readiness checks with an explicitly educational study target
- Weak-route repair, bookmarks and private on-device progress
- A recall-before-reveal walkaround covering ten inspection zones
- A guided air-brake sequence and pressure-loss rate calculator
- Coupling decision scenarios and a local class/endorsement route planner
- Date-stamped FMCSA and eCFR sources
- Offline operation after installation

The free download includes four questions in every route, one readiness check, two pre-trip zones, two air-brake steps, the route planner, pressure calculator and official sources. A US$19.99 non-consumable purchase unlocks all current questions and labs, unlimited readiness checks, repair and bookmarks. There is no subscription.

This independent educational tool does not issue a CLP/CDL, provide ELDT certification, replace vehicle-specific inspection instructions or guarantee a passing result. Each state has its own manual and test process. The current state manual, vehicle instructions and examiner directions control.

No account, advertising, tracking, analytics SDK or cloud profile is used.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime CDL Field Lab | $19.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-08-26

No release notes.

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All apps by 福赐 林: https://appshunter.io/developer/6789946002

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*