GroundSchool Prep
FAA Knowledge & Written Tests
Only for iPhone
Free · In‑App Purchases
iPhone
Over 3,000 practice questions for the Private, Instrument, and Commercial knowledge tests — every answer explained, with the FAA source reference that backs it.
Walk into your FAA knowledge test already knowing you'll pass.
GroundSchool Prep builds practice exams for three FAA knowledge tests: Private Pilot, Instrument Rating, and Commercial Pilot (Single-Engine Land). Over 3,000 questions, written from public FAA source material — the Pilot's Handbook of Aeronautical Knowledge, the Airplane Flying Handbook, the Aeronautical Information Manual, and 14 CFR.
EVERY ANSWER IS EXPLAINED
Each question carries a written explanation and a source reference, so you learn why the right answer is right instead of memorizing which letter it was. Answer choices are reordered on every attempt, so you can't pass by remembering positions.
BUILD THE EXAM YOU NEED
Pick the ACS knowledge areas you want to drill and how many questions you want. Practice exams give you feedback as you go, and you can review any past exam question by question — including the figures and sectional-chart excerpts the real test uses.
SEE WHERE YOU ACTUALLY STAND
Your progress is broken down by ACS knowledge area, so it's obvious which subjects need another pass and which are already solid. Unfinished exams are saved, so you can stop mid-exam and pick it up later.
ENDORSEMENT EXAMS
When you're ready, sit a full 100-question simulated knowledge test. Three consecutive endorsement exams at 80% or better unlock a printable report you can hand to your instructor for the sign-off you need before the real test. Endorsement exams draw adaptively — the more you miss in an area, the more of that area you get, with every ACS area still represented.
ONE PURCHASE PER CERTIFICATE
Each certificate unlocks separately for 60 days. It's a one-time purchase, not a subscription: nothing auto-renews and there's nothing to cancel. Add another certificate whenever you want and the days stack onto what you already have.
NO ADS, NO TRACKING
No advertising, no analytics, no third-party trackers, and no data sold to anyone. You can delete your account, and everything in it, from inside the app.
An internet connection is required — questions are served from a single shared bank so corrections and additions reach you immediately, without waiting for an app update.
GroundSchool Prep is an independent study tool. It is not affiliated with, endorsed by, or approved by the Federal Aviation Administration.
Terms of Use (EULA): https://groundschoolprep.com/terms
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The developer, Woo Hann, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
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Information
- Seller
- Woo Hann
- Size
- 5.2 MB
- Category
- Education
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Commercial Pilot SEL 60 Days $20.00
- Instrument Rating 60 Days $20.00
- Private Pilot 60 Days $20.00
- Copyright
- © 2026 GroundSchool Prep