Prepware Remote Pilot UAS vs Zephyr Mobile Controller
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prepware Remote Pilot UAS
Prepare for the FAA Remote Pilot Knowledge Exam with this comprehensive study and test tool. It offers practice tests, detailed explanations, and covers all essential subjects for drone operation certification. Ideal for aspiring commercial drone pilots and existing aviation professionals.
- Practice tests with questions, answers, and explanations
- Topical study by subject matter
- Instructional text and illustrations
- Covers Regulations, Airspace, Weather, Loading, and Operations
- References for further study
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Comprehensive preparation, study and test tool for the Remote Pilot Initial (Unmanned Aircraft General - Small) FAA Knowledge Exam. Questions, answers and explanations included, for you to study with a true-to-form practice test. Operating a drone for non-hobby operations requires a Remote Pilot Certificate. Applicants must successfully complete the Federal Aviation Administration (FAA) Knowledge Exam to earn the Remote Pilot Certificate with a Small Unmanned Aircraft Systems (sUAS) rating. This app is the key to test success. Rely on the time-tested and dependable ASA Prepware apps to prepare for your FAA Knowledge Exam. Test material is expertly organized into chapters based on subject matter and includes instructional text and illustrations, multiple-choice questions, answer stems, correct answers, explanations (for correct and incorrect answers), and references for further study. This topical study promotes understanding and aids recall to provide an efficient study guide. Subjects covered include Regulations, National Airspace System, Weather, Loading and Performance, and Operations. This app will be particularly helpful for drone operators interested in earning a Remote Pilot certificate, Remote Pilot Aircraft (RPA) applicants, Unmanned Aircraft System (UAS) training programs preparing applicants for FAA Knowledge exams, self-study applicants interested in learning more about commercial unmanned aircraft operations, and existing (manned aircraft) pilots interested in learning more about drone and unmanned aircraft operations who are sharing the National Airspace System. ASA’s Prepware Remote Pilot app is the best resource for successful test-taking and safe small UAS operations.
Zephyr Mobile Controller
Control drone simulations using your mobile device as a touchscreen controller. Connect your phone or tablet to the same network as the simulator for an immersive training experience.
- Touchscreen drone control
- Mobile simulator interface
- Network connectivity required
- Requires Zephyr Drone Simulator account
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The Zephyr Mobile Controller is a touch screen controller that allows you to fly drones in Zephyr Drone Simulator with just a phone or tablet. Enjoy the best drone training simulator with all the convenience of a mobile controller. Zephyr Mobile Controller requires an active Zephyr Drone Simulator account to function. Both the computer and the device used for the controller must be connected to the same network or same wifi signal. For more about Zephyr visit: https://zephyr-sim.com/
Screenshots
Verdict
The clearest difference is review sentiment: Prepware Remote Pilot UAS at 66% against Zephyr Mobile Controller's 0%. Prepware Remote Pilot UAS also leads on rating (4.2 vs 1.0) and ratings volume (102 vs 3). Zephyr Mobile Controller's advantage is price (Free vs $4.99) and iOS requirement (9.0 vs 15.0). On ads, in-app purchases and device support 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
Zephyr Mobile Controller is free to download; Prepware Remote Pilot UAS costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Prepware Remote Pilot UAS holds the better App Store score, 4.2 against 1.0. That said, the two scores are not equally well evidenced: Prepware Remote Pilot UAS has 102 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 66% of Prepware Remote Pilot UAS's written reviews are positive against 0% of Zephyr Mobile Controller's.
Prepware Remote Pilot UAS ships an update every 4 months, Zephyr Mobile Controller every 16 months. The most recent releases landed on October 13, 2026 and September 26, 2026 respectively.
| Parameter | Prepware Remote Pilot UAS | Zephyr Mobile Controller |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.2 (102 ratings) — better | 1.0 (3 ratings) |
| Positive reviews | 65.6% of reviews — better | 0.0% of reviews |
| Number of ratings | 102 — better | 3 |
| Update frequency | Every 4 months — better | Every 16 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #15 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 19 MB | 73 MB |
| Age rating | 4+ | 4+ |
| Developer | ASA | Little Arms Studios |
Customer experience
Prepware Remote Pilot UAS
Zephyr Mobile Controller
Bugs and requests
Prepware Remote Pilot UAS
Reported bugs
31 issues- Question #1141 has incorrect answer/explanation
- Questions are impossible to grade correctly
- App shows remote pilot questions mixed with actual pilot exam questions
- Suddenly showing TSA and runway sign questions
- Legends are not included in figures
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- No legends for maps
- Map figures not matched with correct maps in questions
- Questions need to be updated
- App not up to date for 2021
- Review Missed feature needed
- If you miss a question, then select the right one, it counts it as a correct answer
- Needs to be updated for new regulations
- Needs to be a little closer to sUAS operations as opposed to fixed wing
- Some sections have limited study questions, while another has none at all
- Words to the question and answers have turned the color of the grey background
- Cannot save a record of recent or prior exams
- Accidentally closing app loses progress and ability to review incorrect answers
- Questions need to be updated
- Mix of test questions needs to be much heavier on sectional chart knowledge
- Many questions on real test never came up in app
- There are questions with no correct answers
- Answer provided is for manned aircraft, not sUAS
- The real test was a breeze compared to app tests
- The Blue Angels question answer may be wrong
- Manned aircraft questions mixed in with sUAS
- No way to see how you did on previous exams
- Explanations are not very good, often just a simple sentence restating the question
- No way to help you learn the material
- Mix up the order of possible answers
- Too many manned aircraft questions
- Answer and explanation are different
Requested features
11 requests- Add legends to figures
- Allow practice on fewer questions
- Include flashcards or study materials
- Add a 'Review Missed' feature
- Update questions for current regulations
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- Improve explanations for missed answers
- Fix grading errors in questions
- Allow saving of test results and scores
- Ensure questions are relevant to sUAS operations
- Provide more sectional chart questions
- Fix display issues with question text color
Zephyr Mobile Controller
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Prepware Remote Pilot UAS
No in-app purchases
Zephyr Mobile Controller
No in-app purchases
Questions
Is Prepware Remote Pilot UAS free?
Is Zephyr Mobile Controller free?
Which has better reviews, Prepware Remote Pilot UAS or Zephyr Mobile Controller?
Do Prepware Remote Pilot UAS or Zephyr Mobile Controller have ads?
Which is updated more often, Prepware Remote Pilot UAS or Zephyr Mobile Controller?
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