Comparison

Private Pilot Test Prep vs CDL Zero Permit Practice

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Private Pilot Test Prep

Prepare for the FAA Private Pilot Knowledge Test with over 900 practice questions and detailed explanations. Customize study sessions, review missed questions, and take simulated exams that mirror the official test format and question distribution. Unlock a complete ground school course for advanced features and tracking.

Highlights
  • Over 900 FAA practice questions
  • Detailed explanations and references
  • Customizable study sessions
  • Practice sessions from missed questions
  • Simulated FAA exams
  • Data sync across iOS devices
  • Instructor endorsement upon course completion
Read full description

The #1 Private Pilot test prep app is now free, and includes over 900 FAA questions and explanations to help prepare for the FAA Private Pilot Knowledge Test. Upgrade to the complete ground school course to unlock all lesson, detailed tracking and statistics, and premium test prep with hundreds of additional questions (free trial available). ▸ Custom study sessions based on topics, session size, and your overall mastery. Filters allow you to include or exclude questions that require the use of figures or an E6B. ▸ Create practice sessions from missed questions after a completed practice or exam session. ▸ Review missed questions after a practice or exam session. ▸ Take simulated FAA exams administered under the same rules and time constraints as the actual Private Pilot knowledge test. Unlike other test prep apps, our exams present the correct proportion of questions from each knowledge area per the ACS. ▸ Sync your data and course progress across on all of your iOS devices ▸ Access a library of study resources for the Private Pilot certificate ▸ Question bank covers all areas of the Private Pilot Airman Certification Standards to ensure thorough preparation for the knowledge test. ▸ Detailed explanations and references for all questions. ▸ Obtain an instructor endorsement after completing the course.

About

CDL Zero Permit Practice

Prepare for your Commercial Driver's License (CDL) permit exam with realistic practice questions and progress tracking. This app offers a focused, distraction-free study experience for aspiring Class A and Class B drivers.

Highlights
  • Practice questions based on official CDL topics
  • Exam-style question sets
  • Progress tracking
  • Distraction-free design
  • Mobile-friendly learning
Features
Read full description

CDL Zero helps future commercial drivers prepare for the CDL permit exam with focused practice, realistic questions, and clear progress tracking. Designed for students working toward a Class A or Class B Commercial Driver License, the app offers structured practice that mirrors the style and difficulty of the real CDL knowledge tests. Features include: • Practice questions based on official CDL topics • Exam-style question sets to simulate real testing conditions • Progress tracking to identify strengths and weak areas • Simple, distraction-free design for focused studying • Mobile-friendly learning you can use anytime, anywhere CDL Zero is built to support both new drivers and experienced drivers refreshing their knowledge before testing. Whether you are studying at home, on a break, or on the go, CDL Zero gives you a reliable way to prepare with confidence. Some features require a subscription to unlock full access. This app is not affiliated with any government agency. CDL Zero is an independent study tool designed to help users prepare for the CDL permit exam.

Screenshots

Private Pilot Test Prep4 screens
CDL Zero Permit Practice4 screens

Verdict

The call

The clearest difference is ratings volume: Private Pilot Test Prep at 1.5K against CDL Zero Permit Practice's 1. Private Pilot Test Prep also leads on update cadence (fortnightly vs every 2 months). CDL Zero Permit Practice's advantage is rating (5.0 vs 4.8) and iOS requirement (15.1 vs 17.1). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Private Pilot Test Prep sells 4 one-off in-app purchases and CDL Zero Permit Practice sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

CDL Zero Permit Practice holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Private Pilot Test Prep has 1.5K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Private Pilot Test Prep ships an update fortnightly, CDL Zero Permit Practice every 2 months. The most recent releases landed on October 16, 2026 and September 24, 2026 respectively.

Scorecard4 real differences · 6 level
Private Pilot Test Prep versus CDL Zero Permit Practice: the parameters behind the verdict, then further details
ParameterPrivate Pilot Test PrepCDL Zero Permit Practice
PriceFreeFree
Rating4.8 (1.5K ratings)5.0 (1 ratings) — better
Positive reviews84.7% of reviews—
Number of ratings1.5K — better1
Update frequencyFortnightly — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.115.1 — better
Further details — not scored
Size122 MB38 MB
Age rating12+4+
DeveloperAeroapps TechnologyVictor Rodriguez

Customer experience

Private Pilot Test Prep

All ratings1,523 ratings
Positive97.0%
Neutral1.4%
Negative1.6%
Written reviews59 reviews
Positive84.7%
Neutral3.4%
Negative11.9%

CDL Zero Permit Practice

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Private Pilot Test Prep

Reported bugs

4 issues
  • Grading issues and incorrect marking of answers
  • Frequent app updates required, causing issues for users with poor internet
  • Inability to review missed questions after exiting the app
  • Crashes and login issues reported

Requested features

8 requests
  • Add sound when choosing correct answers
  • Provide separate guides for each chapter
  • Offer 50-question practice tests by chapter
  • Allow users to pause and resume simulated tests
  • Provide a bank of all practice tests and simulated tests
Show 3 more
  • Display passed section grades to track progress
  • Add a lock zoom feature for charts
  • Integrate a protractor tool

CDL Zero Permit Practice

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Private Pilot Test Prep

One-time4
  • Private Pilot Course TrialFree
  • Private Pilot Test Prep$49.99
  • Upgrade to Ground School$99.99
Show 1 more
  • Private Pilot Ground School$149.99
4 purchases

CDL Zero Permit Practice

Subscriptions2
  • CDL Zero Premium (Monthly)$9.991 Month
  • CDL Zero Yearly$29.991 Year
One-time2
  • CDL Zero Standard Pass$14.99
  • CDL Zero Lifetime$49.99

Questions

Is Private Pilot Test Prep free?
Private Pilot Test Prep is free to download, with in-app purchases available.
Is CDL Zero Permit Practice free?
CDL Zero Permit Practice is free to download, with in-app purchases available.
Which has better reviews, Private Pilot Test Prep or CDL Zero Permit Practice?
CDL Zero Permit Practice is rated higher. Private Pilot Test Prep averages 4.8 out of 5 from 1.5K ratings, while CDL Zero Permit Practice averages 5.0 from 1 ratings.
Do Private Pilot Test Prep or CDL Zero Permit Practice have ads?
Neither Private Pilot Test Prep nor CDL Zero Permit Practice shows ads.
Which is updated more often, Private Pilot Test Prep or CDL Zero Permit Practice?
Private Pilot Test Prep ships an update fortnightly, and CDL Zero Permit Practice every 2 months. Most recently, Private Pilot Test Prep was updated on October 16, 2026 and CDL Zero Permit Practice on September 24, 2026.

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